Convert.ToUInt32 Méthode

Référence

Définition

Espace de noms:: System

Assembly:: System.Runtime.Extensions.dll

Assembly:: System.Runtime.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Important

Certaines informations portent sur la préversion du produit qui est susceptible d’être en grande partie modifiée avant sa publication. Microsoft exclut toute garantie, expresse ou implicite, concernant les informations fournies ici.

Convertit une valeur spécifiée en entier non signé 32 bits.

Surcharges

ToUInt32(String)	Convertit la représentation sous forme de chaîne spécifiée d'un nombre en entier non signé 32 bits équivalent.
ToUInt32(UInt64)	Convertit la valeur de l'entier non signé 64 bits spécifié en entier non signé 32 bits équivalent.
ToUInt32(UInt16)	Convertit la valeur de l'entier non signé 16 bits spécifié en l'entier non signé 32 bits équivalent.
ToUInt32(UInt32)	Retourne l'entier non signé 32 bits spécifié. Aucune conversion n'est effectuée.
ToUInt32(DateTime)	L'appel de cette méthode lève toujours InvalidCastException.
ToUInt32(String, IFormatProvider)	Convertit la représentation sous forme de chaîne spécifiée d'un nombre en entier non signé 32 bits équivalent à l'aide des informations de mise en forme spécifiées propres à la culture.
ToUInt32(String, Int32)	Convertit la représentation sous forme de chaîne d'un nombre dans une base spécifiée en entier non signé 32 bits équivalent.
ToUInt32(Single)	Convertit la valeur du nombre à virgule flottante simple précision spécifié en entier non signé 32 bits équivalent.
ToUInt32(Object, IFormatProvider)	Convertit la valeur de l'objet spécifié en entier non signé 32 bits à l'aide des informations de mise en forme spécifiées propres à la culture.
ToUInt32(SByte)	Convertit la valeur de l'entier signé 8 bits spécifié en entier non signé 32 bits équivalent.
ToUInt32(Char)	Convertit la valeur du caractère Unicode spécifié en entier non signé 32 bits équivalent.
ToUInt32(Int64)	Convertit la valeur de l'entier signé 64 bits spécifié en entier non signé 32 bits équivalent.
ToUInt32(Int32)	Convertit la valeur de l'entier signé 32 bits spécifié en entier non signé 32 bits équivalent.
ToUInt32(Int16)	Convertit la valeur de l'entier signé 16 bits spécifié en entier non signé 32 bits équivalent.
ToUInt32(Double)	Convertit la valeur du nombre à virgule flottante double précision spécifié en entier non signé 32 bits équivalent.
ToUInt32(Decimal)	Convertit la valeur du nombre décimal spécifié en entier non signé 32 bits équivalent.
ToUInt32(Object)	Convertit la valeur de l'objet spécifié en entier non signé 32 bits.
ToUInt32(Byte)	Convertit la valeur de l'entier non signé 8 bits spécifié en l'entier non signé 32 bits équivalent.
ToUInt32(Boolean)	Convertit la valeur booléenne spécifiée en entier non signé 32 bits équivalent.

ToUInt32(String)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la représentation sous forme de chaîne spécifiée d'un nombre en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(System::String ^ value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (string value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (string? value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : string -> uint32

Public Shared Function ToUInt32 (value As String) As UInteger

Paramètres

value: String

Chaîne contenant le nombre à convertir.

Retours

UInt32

Entier non signé 32 bits équivalent au nombre dans value, ou 0 (zéro) si value est null.

Attributs: CLSCompliantAttribute

Exceptions

FormatException

value n’est pas constitué d’un signe facultatif suivi d’une séquence de chiffres (0 à 9).

OverflowException

value représente un nombre inférieur à UInt32.MinValue ou supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant interprète les éléments d’un tableau de chaînes comme des chaînes numériques et tente de les convertir en entiers non signés.

string[] values = { "One", "1.34e28", "-26.87", "-18", "-6.00",
                    " 0", "137", "1601.9", Int32.MaxValue.ToString() };
uint result;

foreach (string value in values)
{
   try {
      result = Convert.ToUInt32(value);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value '{1}' is outside the range of the UInt32 type.",
                        value.GetType().Name, value);
   }
   catch (FormatException) {
      Console.WriteLine("The {0} value '{1}' is not in a recognizable format.",
                        value.GetType().Name, value);
   }
}
// The example displays the following output:
//    The String value 'One' is not in a recognizable format.
//    The String value '1.34e28' is not in a recognizable format.
//    The String value '-26.87' is not in a recognizable format.
//    The String value '-18' is outside the range of the UInt32 type.
//    The String value '-6.00' is not in a recognizable format.
//    Converted the String value ' 0' to the UInt32 value 0.
//    Converted the String value '137' to the UInt32 value 137.
//    The String value '1601.9' is not in a recognizable format.
//    Converted the String value '2147483647' to the UInt32 value 2147483647.

let values =
    [| "1603"; "1,603"; "one"; "1.6e03"
       "1.2e-02"; "-1326"; "1074122" |]

for value in values do
    try
        let result = Convert.ToUInt16 value
        printfn $"Converted the {value.GetType().Name} value '{value}' to the {result.GetType().Name} value {result}."
    with
    | :? FormatException ->
        printfn $"The {value.GetType().Name} value {value} is not in a recognizable format."
    | :? OverflowException ->
        printfn $"{value} is outside the range of the UInt32 type." 
// The example displays the following output:
//    Converted the String value '1603' to the UInt32 value 1603.
//    The String value 1,603 is not in a recognizable format.
//    The String value one is not in a recognizable format.
//    The String value 1.6e03 is not in a recognizable format.
//    The String value 1.2e-02 is not in a recognizable format.
//    -1326 is outside the range of the UInt32 type.
//    1074122 is outside the range of the UInt32 type.

Dim values() As String = { "One", "1.34e28", "-26.87", "-18", "-6.00", _
                           " 0", "137", "1601.9", Int32.MaxValue.ToString() }
Dim result As UInteger

For Each value As String In values
   Try
      result = Convert.ToUInt32(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        value.GetType().Name, value, result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.", _
                        value.GetType().Name, value)
   Catch e As FormatException
      Console.WriteLine("The {0} value '{1}' is not in a recognizable format.", _
                        value.GetType().Name, value)
   End Try
Next
' The example displays the following output:
'    The String value 'One' is not in a recognizable format.
'    The String value '1.34e28' is not in a recognizable format.
'    The String value '-26.87' is not in a recognizable format.
'    The String value -18 is outside the range of the UInt32 type.
'    The String value '-6.00' is not in a recognizable format.
'    Converted the String value ' 0' to the UInt32 value 0.
'    Converted the String value '137' to the UInt32 value 137.
'    The String value '1601.9' is not in a recognizable format.
'    Converted the String value '2147483647' to the UInt32 value 2147483647.

Remarques

L’utilisation de la ToUInt32(String) méthode équivaut à passer value à la UInt32.Parse(String) méthode . value est interprété à l’aide des conventions de mise en forme de la culture actuelle.

Si vous préférez ne pas gérer une exception si la conversion échoue, vous pouvez appeler la méthode à la UInt32.TryParse place. Elle retourne une Boolean valeur qui indique si la conversion a réussi ou échoué.

S’applique à

ToUInt32(UInt64)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier non signé 64 bits spécifié en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(System::UInt64 value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (ulong value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : uint64 -> uint32

Public Shared Function ToUInt32 (value As ULong) As UInteger

Paramètres

value: UInt64

Entier non signé 64 bits à convertir.

Retours

UInt32

Entier non signé 32 bits équivalent à value.

Attributs: CLSCompliantAttribute

Exceptions

OverflowException

value est supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant tente de convertir chaque élément d’un tableau d’entiers longs non signés en valeur entière non signée.

ulong[] numbers = { UInt64.MinValue, 121, 340, UInt64.MaxValue };
uint result;
foreach (ulong number in numbers)
{
   try {
      result = Convert.ToUInt32(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    Converted the UInt64 value 0 to the UInt32 value 0.
//    Converted the UInt64 value 121 to the UInt32 value 121.
//    Converted the UInt64 value 340 to the UInt32 value 340.
//    The UInt64 value 18446744073709551615 is outside the range of the UInt32 type.

let numbers = [| UInt64.MinValue; 121uL; 340uL; UInt64.MaxValue |]

for number in numbers do
    try
        let result = Convert.ToUInt16 number
        printfn $"Converted the {number.GetType().Name} value '{number}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn $"The {number.GetType().Name} value {number} is outside the range of the UInt32 type."
// The example displays the following output:
//    Converted the UInt64 value '0' to the UInt32 value 0.
//    Converted the UInt64 value '121' to the UInt32 value 121.
//    Converted the UInt64 value '340' to the UInt32 value 340.
//    The UInt64 value 18446744073709551615 is outside the range of the UInt32 type.

Dim numbers() As ULong = { UInt64.MinValue, 121, 340, UInt64.MaxValue }
Dim result As UInteger

For Each number As ULong In numbers
   Try
      result = Convert.ToUInt32(number)
      Console.WriteLine("Converted the {0} value {1} to a {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    Converted the UInt64 value 0 to a UInt32 value 0.
'    Converted the UInt64 value 121 to a UInt32 value 121.
'    Converted the UInt64 value 340 to a UInt32 value 340.
'    The UInt64 value 18446744073709551615 is outside the range of the UInt32 type.

S’applique à

ToUInt32(UInt16)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier non signé 16 bits spécifié en l'entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(System::UInt16 value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (ushort value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : uint16 -> uint32

Public Shared Function ToUInt32 (value As UShort) As UInteger

Paramètres

value: UInt16

Entier non signé 16 bits à convertir.

Retours

UInt32

Entier non signé 32 bits équivalent à value.

Attributs: CLSCompliantAttribute

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’entiers 16 bits non signé en valeur entière non signée.

ushort[] numbers = { UInt16.MinValue, 121, 340, UInt16.MaxValue };
uint result;
foreach (ushort number in numbers)
{
   result = Convert.ToUInt32(number);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                     number.GetType().Name, number,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the UInt16 value 0 to the UInt32 value 0.
//    Converted the UInt16 value 121 to the UInt32 value 121.
//    Converted the UInt16 value 340 to the UInt32 value 340.
//    Converted the UInt16 value 65535 to the UInt32 value 65535.

let numbers = [| UInt16.MinValue; 121us; 340us; UInt16.MaxValue |]

for number in numbers do
    try
        let result = Convert.ToUInt16 number
        printfn $"Converted the {number.GetType().Name} value '{number}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn $"The {number.GetType().Name} value {number} is outside the range of the UInt32 type."
                        
// The example displays the following output:
//    Converted the UInt16 value '0' to the UInt32 value 0.
//    Converted the UInt16 value '121' to the UInt32 value 121.
//    Converted the UInt16 value '340' to the UInt32 value 340.
//    The UInt16 value 4294967295 is outside the range of the UInt32 type.

Dim numbers() As UShort = { UInt16.MinValue, 121, 340, UInt16.MaxValue }
Dim result As UInteger

For Each number As UShort In numbers
   result = Convert.ToUInt32(number)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                     number.GetType().Name, number, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the UInt16 value 0 to the UInt32 value 0.
'    Converted the UInt16 value 121 to the UInt32 value 121.
'    Converted the UInt16 value 340 to the UInt32 value 340.
'    Converted the UInt16 value 65535 to the UInt32 value 65535.

S’applique à

ToUInt32(UInt32)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Retourne l'entier non signé 32 bits spécifié. Aucune conversion n'est effectuée.

public:
 static System::UInt32 ToUInt32(System::UInt32 value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (uint value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : uint32 -> uint32

Public Shared Function ToUInt32 (value As UInteger) As UInteger

Paramètres

value: UInt32

Entier non signé 32 bits à retourner.

Retours

UInt32

value est retourné sans modification.

Attributs: CLSCompliantAttribute

S’applique à

ToUInt32(DateTime)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

L'appel de cette méthode lève toujours InvalidCastException.

public:
 static System::UInt32 ToUInt32(DateTime value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (DateTime value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : DateTime -> uint32

Public Shared Function ToUInt32 (value As DateTime) As UInteger

Paramètres

value: DateTime

Valeur de date et heure à convertir.

Retours

UInt32

Cette conversion n'est pas prise en charge. Aucune valeur n’est retournée.

Attributs: CLSCompliantAttribute

Exceptions

InvalidCastException

Cette conversion n'est pas prise en charge.

S’applique à

ToUInt32(String, IFormatProvider)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la représentation sous forme de chaîne spécifiée d'un nombre en entier non signé 32 bits équivalent à l'aide des informations de mise en forme spécifiées propres à la culture.

public:
 static System::UInt32 ToUInt32(System::String ^ value, IFormatProvider ^ provider);

[System.CLSCompliant(false)]
public static uint ToUInt32 (string value, IFormatProvider provider);

[System.CLSCompliant(false)]
public static uint ToUInt32 (string? value, IFormatProvider? provider);

[<System.CLSCompliant(false)>]
static member ToUInt32 : string * IFormatProvider -> uint32

Public Shared Function ToUInt32 (value As String, provider As IFormatProvider) As UInteger

Paramètres

value: String

Chaîne contenant le nombre à convertir.

provider: IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.

Retours

UInt32

Entier non signé 32 bits équivalent au nombre dans value, ou 0 (zéro) si value est null.

Attributs: CLSCompliantAttribute

Exceptions

FormatException

value n’est pas constitué d’un signe facultatif suivi d’une séquence de chiffres (0 à 9).

OverflowException

value représente un nombre inférieur à UInt32.MinValue ou supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant définit un objet personnalisé NumberFormatInfo qui reconnaît la chaîne « pos » comme signe positif et la chaîne « neg » comme signe négatif. Il tente ensuite de convertir chaque élément d’un tableau de chaînes numériques en entier à l’aide de ce fournisseur et du NumberFormatInfo fournisseur pour la culture invariante.

using System;
using System.Globalization;

public class Class1
{
   public static void Main()
   {
      // Create a NumberFormatInfo object and set several of its
      // properties that apply to numbers.
      NumberFormatInfo provider = new NumberFormatInfo();
      provider.PositiveSign = "pos ";
      provider.NegativeSign = "neg ";

      // Define an array of numeric strings.
      string[] values = { "123456789", "+123456789", "pos 123456789",
                          "123456789.", "123,456,789",  "4294967295",
                          "4294967296", "-1", "neg 1" };

      foreach (string value in values)
      {
         Console.Write("{0,-20} -->", value);
         try {
            Console.WriteLine("{0,20}", Convert.ToUInt32(value, provider));
         }
         catch (FormatException) {
            Console.WriteLine("{0,20}", "Bad Format");
         }
         catch (OverflowException) {
            Console.WriteLine("{0,20}", "Numeric Overflow");
         }
      }
   }
}
// The example displays the following output:
//       123456789            -->           123456789
//       +123456789           -->          Bad Format
//       pos 123456789        -->           123456789
//       123456789.           -->          Bad Format
//       123,456,789          -->          Bad Format
//       4294967295           -->          4294967295
//       4294967296           -->    Numeric Overflow
//       -1                   -->          Bad Format
//       neg 1                -->    Numeric Overflow

open System
open System.Globalization

// Create a NumberFormatInfo object and set several of its
// properties that apply to numbers.
let provider = NumberFormatInfo()
provider.PositiveSign <- "pos "
provider.NegativeSign <- "neg "

// Define an array of numeric strings.
let values =
    [| "123456789"; "+123456789"; "pos 123456789"
       "123456789."; "123,456,789"; "4294967295"
       "4294967296"; "-1"; "neg 1" |]

for value in values do
    printf $"{value,-20} -->"
    
    try
        printfn $"{Convert.ToUInt32(value, provider),20}"
    with
    | :? FormatException ->
        printfn "%20s" "Bad Format"
    | :? OverflowException ->
        printfn "%20s" "Numeric Overflow"
// The example displays the following output:
//       123456789            -->           123456789
//       +123456789           -->          Bad Format
//       pos 123456789        -->           123456789
//       123456789.           -->          Bad Format
//       123,456,789          -->          Bad Format
//       4294967295           -->          4294967295
//       4294967296           -->    Numeric Overflow
//       -1                   -->          Bad Format
//       neg 1                -->    Numeric Overflow

Imports System.Globalization

Module Example
   Public Sub Main()
      ' Create a NumberFormatInfo object and set several of its
      ' properties that apply to numbers.
      Dim provider As New NumberFormatInfo() 
      provider.PositiveSign = "pos "
      provider.NegativeSign = "neg "

      ' Define an array of numeric strings.
      Dim values() As String = { "123456789", "+123456789", "pos 123456789", _
                                 "123456789.", "123,456,789",  "4294967295", _
                                 "4294967296", "-1", "neg 1" }

      For Each value As String In values
         Console.Write("{0,-20} -->", value)
         Try
            Console.WriteLine("{0,20}", Convert.ToUInt32(value, provider))
         Catch e As FormatException
            Console.WriteLine("{0,20}", "Bad Format")
         Catch e As OverflowException
            Console.WriteLine("{0,20}", "Numeric Overflow")
         End Try   
      Next
    End Sub 
End Module 
' The example displays the following output:
'       123456789            -->           123456789
'       +123456789           -->          Bad Format
'       pos 123456789        -->           123456789
'       123456789.           -->          Bad Format
'       123,456,789          -->          Bad Format
'       4294967295           -->          4294967295
'       4294967296           -->    Numeric Overflow
'       -1                   -->          Bad Format
'       neg 1                -->    Numeric Overflow

Remarques

La valeur de retour est le résultat d’un UInt32.Parse appel sur value.

providerest un IFormatProvider instance qui obtient un NumberFormatInfo objet . L’objet NumberFormatInfo fournit des informations spécifiques à la culture sur le format de value. Si provider a la valeur null, le NumberFormatInfo pour la culture actuelle est utilisé.

S’applique à

ToUInt32(String, Int32)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la représentation sous forme de chaîne d'un nombre dans une base spécifiée en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(System::String ^ value, int fromBase);

[System.CLSCompliant(false)]
public static uint ToUInt32 (string value, int fromBase);

[System.CLSCompliant(false)]
public static uint ToUInt32 (string? value, int fromBase);

[<System.CLSCompliant(false)>]
static member ToUInt32 : string * int -> uint32

Public Shared Function ToUInt32 (value As String, fromBase As Integer) As UInteger

Paramètres

value: String

Chaîne contenant le nombre à convertir.

fromBase: Int32

Base du nombre figurant dans value, qui doit correspondre à 2, 8, 10 ou 16.

Retours

UInt32

Entier non signé 32 bits équivalent au nombre dans value, ou 0 (zéro) si value est null.

Attributs: CLSCompliantAttribute

Exceptions

ArgumentException

fromBase n’a pas la valeur 2, 8, 10 ou 16.

- ou -

value, qui représente un nombre non signé autre qu’en base 10, est préfixé avec un signe négatif.

ArgumentOutOfRangeException

value a la valeur Empty.

FormatException

value contient un caractère qui n’est pas un chiffre valide dans la base spécifiée par fromBase. Le message d’exception indique qu’il n’y a pas de chiffres à convertir si le premier caractère dans value n’est pas valide ; sinon, le message indique que value contient des caractères de fin non valides.

OverflowException

value, qui représente un nombre non signé autre qu’en base 10, est préfixé avec un signe négatif.

- ou -

value représente un nombre inférieur à UInt32.MinValue ou supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant tente d’interpréter chaque élément d’un tableau de chaînes numériques comme une valeur hexadécimale et de le convertir en entier non signé.

using System;

public class Example
{
   public static void Main()
   {
      string[] hexStrings = { "80000000", "0FFFFFFF", "F0000000", "00A3000", "D",
                              "-13", "9AC61", "GAD", "FFFFFFFFFF" };

      foreach (string hexString in hexStrings)
      {
         Console.Write("{0,-12}  -->  ", hexString);
         try {
            uint number = Convert.ToUInt32(hexString, 16);
            Console.WriteLine("{0,18:N0}", number);
         }
         catch (FormatException) {
            Console.WriteLine("{0,18}", "Bad Format");
         }
         catch (OverflowException)
         {
            Console.WriteLine("{0,18}", "Numeric Overflow");
         }
         catch (ArgumentException) {
            Console.WriteLine("{0,18}", "Invalid in Base 16");
         }
      }
   }
}
// The example displays the following output:
//       80000000      -->       2,147,483,648
//       0FFFFFFF      -->         268,435,455
//       F0000000      -->       4,026,531,840
//       00A3000       -->             667,648
//       D             -->                  13
//       -13           -->  Invalid in Base 16
//       9AC61         -->             633,953
//       GAD           -->          Bad Format
//       FFFFFFFFFF    -->    Numeric Overflow

open System

let hexStrings =
    [| "80000000"; "0FFFFFFF"; "F0000000"; "00A3000"
       "D"; "-13"; "9AC61"; "GAD"; "FFFFFFFFFF" |]

for hexString in hexStrings do
    printf $"{hexString,-12}  -->  "
    try
        let number = Convert.ToUInt32(hexString, 16)
        printfn $"{number,18:N0}"
    with
    | :? FormatException ->
        printfn "%18s" "Bad Format"
    | :? OverflowException ->
        printfn "%18s" "Numeric Overflow"
    | :? ArgumentException ->
        printfn "%18s" "Invalid in Base 16"
// The example displays the following output:
//       80000000      -->       2,147,483,648
//       0FFFFFFF      -->         268,435,455
//       F0000000      -->       4,026,531,840
//       00A3000       -->             667,648
//       D             -->                  13
//       -13           -->  Invalid in Base 16
//       9AC61         -->             633,953
//       GAD           -->          Bad Format
//       FFFFFFFFFF    -->    Numeric Overflow

Module Example
   Public Sub Main()
      Dim hexStrings() As String = { "80000000", "0FFFFFFF", "F0000000", "00A3000", "D", _
                                     "-13", "9AC61", "GAD", "FFFFFFFFFF" }
      For Each hexString As String In hexStrings
         Console.Write("{0,-12}  -->  ", hexString)
         Try
            Dim number As UInteger = Convert.ToUInt32(hexString, 16)
            Console.WriteLine("{0,18:N0}", number)
         Catch e As FormatException
            Console.WriteLine("{0,18}", "Bad Format")
         Catch e As OverflowException
            Console.WriteLine("{0,18}", "Numeric Overflow")
         Catch e As ArgumentException
            Console.WriteLine("{0,18}", "Invalid in Base 16")
         End Try
      Next                                            
   End Sub
End Module
'    ' The example displays the following output:
'    80000000      -->       2,147,483,648
'    0FFFFFFF      -->         268,435,455
'    F0000000      -->       4,026,531,840
'    00A3000       -->             667,648
'    D             -->                  13
'    -13           -->  Invalid in Base 16
'    9AC61         -->             633,953
'    GAD           -->          Bad Format
'    FFFFFFFFFF    -->    Numeric Overflow

Remarques

Si fromBase a la valeur 16, vous pouvez préfixer le nombre spécifié par le value paramètre avec « 0x » ou « 0X ».

Étant donné que le UInt32 type de données prend uniquement en charge les valeurs non signées, la ToUInt32(String, Int32) méthode suppose que value est exprimée à l’aide de la représentation binaire non signée. En d’autres termes, tous les 32 bits sont utilisés pour représenter la valeur numérique, et un bit de signe est absent. Par conséquent, il est possible d’écrire du code dans lequel une valeur entière signée qui est hors de la plage du type de UInt32 données est convertie en valeur UInt32 sans que la méthode lève une exception. L’exemple suivant convertit MinValue en sa représentation sous forme de chaîne hexadécimale, puis appelle la ToUInt32(String, Int32) méthode . Au lieu de lever une exception, la méthode affiche le message « 0x80000000 convertit en 2147483648 ».

// Create a hexadecimal value out of range of the UInt32 type.
string value = Convert.ToString(Int32.MinValue, 16);
// Convert it back to a number.
try
{
   UInt32 number = Convert.ToUInt32(value, 16);
   Console.WriteLine("0x{0} converts to {1}.", value, number);
}
catch (OverflowException)
{
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned integer.",
                     value);
}

// Create a hexadecimal value out of range of the UInt32 type.
let value = Convert.ToString(Int32.MinValue, 16)
// Convert it back to a number.
try
    let number = Convert.ToUInt32(value, 16)
    printfn $"0x{value} converts to {number}."
with :? OverflowException ->
    printfn $"Unable to convert '0x{value}' to an unsigned integer."

' Create a hexadecimal value out of range of the UInt32 type.
Dim value As String = Convert.ToString(Integer.MinValue, 16)
' Convert it back to a number.
Try
   Dim number As UInt32 = Convert.ToUInt32(value, 16)
   Console.WriteLine("0x{0} converts to {1}.", value, number)
Catch e As OverflowException
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned integer.", _
                     value)
End Try

Lors de l’exécution d’opérations binaires ou de conversions numériques, il incombe toujours au développeur de vérifier qu’une méthode ou un opérateur utilise la représentation numérique appropriée pour interpréter une valeur particulière. L’exemple suivant illustre une technique permettant de s’assurer que la méthode n’utilise pas de manière inappropriée la représentation binaire pour interpréter une valeur qui utilise la représentation complémentaire de deux lors de la conversion d’une chaîne hexadécimale en valeur UInt32 . L’exemple détermine si une valeur représente un entier signé ou non signé pendant la conversion de cette valeur en sa représentation sous forme de chaîne. Lorsque l’exemple convertit la valeur en valeur UInt32 , il vérifie si la valeur d’origine était un entier signé. Si c’est le cas, et si son bit d’ordre élevé est défini (ce qui indique que la valeur d’origine était négative), la méthode lève une exception.

// Create a negative hexadecimal value out of range of the UInt32 type.
int sourceNumber = Int32.MinValue;
bool isSigned = Math.Sign((int)sourceNumber.GetType().GetField("MinValue").GetValue(null)) == -1;
string value = Convert.ToString(sourceNumber, 16);
UInt32 targetNumber;
try
{
   targetNumber = Convert.ToUInt32(value, 16);
   if (isSigned && ((targetNumber & 0x80000000) != 0))
      throw new OverflowException();
   else
      Console.WriteLine("0x{0} converts to {1}.", value, targetNumber);
}
catch (OverflowException)
{
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned integer.",
                     value);
}
// Displays the following to the console:
//    Unable to convert '0x80000000' to an unsigned integer.

// Create a negative hexadecimal value out of range of the UInt32 type.
let sourceNumber = Int32.MinValue
let isSigned = sign (sourceNumber.GetType().GetField("MinValue").GetValue null :?> int) = -1
let value = Convert.ToString(sourceNumber, 16)
try
    let targetNumber = Convert.ToUInt32(value, 16)
    if isSigned && targetNumber &&& 0x80000000u <> 0u then
        raise (OverflowException())
    else
        printfn $"0x{value} converts to {targetNumber}."
with :? OverflowException ->
    printfn $"Unable to convert '0x{value}' to an unsigned integer."
// Displays the following to the console:
//    Unable to convert '0x80000000' to an unsigned integer.

' Create a negative hexadecimal value out of range of the UInt32 type.
Dim sourceNumber As Integer = Integer.MinValue
Dim isSigned As Boolean = Math.Sign(sourceNumber.MinValue) = -1
Dim value As String = Convert.ToString(sourceNumber, 16)
Dim targetNumber As UInt32
Try
   targetNumber = Convert.ToUInt32(value, 16)
   If isSigned And ((targetNumber And &H80000000) <> 0) Then
      Throw New OverflowException()
   Else 
      Console.WriteLine("0x{0} converts to {1}.", value, targetNumber)
   End If    
Catch e As OverflowException
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned integer.", _
                     value)
End Try 
' Displays the following to the console:
'    Unable to convert '0x80000000' to an unsigned integer.

S’applique à

ToUInt32(Single)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur du nombre à virgule flottante simple précision spécifié en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(float value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (float value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : single -> uint32

Public Shared Function ToUInt32 (value As Single) As UInteger

Paramètres

value: Single

Nombre à virgule flottante simple précision à convertir.

Retours

UInt32

value, arrondi à l’entier non signé 32 bits le plus proche. Si value se trouve entre deux nombres entiers, le nombre pair est retourné (par exemple, 4,5 est converti en 4 et 5,5 en 6).

Attributs: CLSCompliantAttribute

Exceptions

OverflowException

value est inférieur à zéro ou supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant tente de convertir chaque élément d’un tableau de Single valeurs en entier non signé.

float[] values= { Single.MinValue, -1.38e10f, -1023.299f, -12.98f,
                  0f, 9.113e-16f, 103.919f, 17834.191f, Single.MaxValue };
uint result;

foreach (float value in values)
{
   try {
      result = Convert.ToUInt32(value);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.",
                        value.GetType().Name, value);
   }
}
// The example displays the following output:
//    The Single value -3.402823E+38 is outside the range of the UInt32 type.
//    The Single value -1.38E+10 is outside the range of the UInt32 type.
//    The Single value -1023.299 is outside the range of the UInt32 type.
//    The Single value -12.98 is outside the range of the UInt32 type.
//    Converted the Single value 0 to the UInt32 value 0.
//    Converted the Single value 9.113E-16 to the UInt32 value 0.
//    Converted the Single value 103.919 to the UInt32 value 104.
//    Converted the Single value 17834.19 to the UInt32 value 17834.
//    The Single value 3.402823E+38 is outside the range of the UInt32 type.

let numbers = 
    [| Single.MinValue; -1.38e10f; -1023.299f; -12.98f
       0f; 9.113e-16f; 103.919f; 17834.191f; Single.MaxValue |]

for number in numbers do
    try
        let result = Convert.ToUInt16 number
        printfn $"Converted the {number.GetType().Name} value '{number}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn $"{number} is outside the range of the UInt32 type."
// The example displays the following output:
//    -3.402823E+38 is outside the range of the UInt32 type.
//    -1.38E+10 is outside the range of the UInt32 type.
//    -1023.299 is outside the range of the UInt32 type.
//    -12.98 is outside the range of the UInt32 type.
//    Converted the Single value '0' to the UInt32 value 0.
//    Converted the Single value '9.113E-16' to the UInt32 value 0.
//    Converted the Single value '103.919' to the UInt32 value 104.
//    Converted the Single value '17834.19' to the UInt32 value 17834.
//    3.402823E+38 is outside the range of the UInt32 type.

Dim values() As Single = { Single.MinValue, -1.38e10, -1023.299, -12.98, _
                           0, 9.113e-16, 103.919, 17834.191, Single.MaxValue }
Dim result As UInteger

For Each value As Single In values
   Try
      result = Convert.ToUInt32(value)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        value.GetType().Name, value, result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.", _
                        value.GetType().Name, value)
   End Try
Next
' The example displays the following output:
'    The Single value -3.402823E+38 is outside the range of the UInt32 type.
'    The Single value -1.38E+10 is outside the range of the UInt32 type.
'    The Single value -1023.299 is outside the range of the UInt32 type.
'    The Single value -12.98 is outside the range of the UInt32 type.
'    Converted the Single value 0 to the UInt32 value 0.
'    Converted the Single value 9.113E-16 to the UInt32 value 0.
'    Converted the Single value 103.919 to the UInt32 value 104.
'    Converted the Single value 17834.19 to the UInt32 value 17834.
'    The Single value 3.402823E+38 is outside the range of the UInt32 type.

Voir aussi

Single
Round

S’applique à

ToUInt32(Object, IFormatProvider)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'objet spécifié en entier non signé 32 bits à l'aide des informations de mise en forme spécifiées propres à la culture.

public:
 static System::UInt32 ToUInt32(System::Object ^ value, IFormatProvider ^ provider);

[System.CLSCompliant(false)]
public static uint ToUInt32 (object value, IFormatProvider provider);

[System.CLSCompliant(false)]
public static uint ToUInt32 (object? value, IFormatProvider? provider);

[<System.CLSCompliant(false)>]
static member ToUInt32 : obj * IFormatProvider -> uint32

Public Shared Function ToUInt32 (value As Object, provider As IFormatProvider) As UInteger

Paramètres

value: Object

Objet qui implémente l'interface IConvertible.

provider: IFormatProvider

Objet qui fournit des informations de mise en forme propres à la culture.

Retours

UInt32

Entier non signé 32 bits équivalent à value, ou zéro si value est null.

Attributs: CLSCompliantAttribute

Exceptions

FormatException

value n’a pas un format approprié.

InvalidCastException

value n’implémente pas l’interface IConvertible .

- ou -

La conversion n’est pas prise en charge.

OverflowException

value représente un nombre inférieur à UInt32.MinValue ou supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant définit une HexString classe qui implémente l’interface IConvertible et qui est conçue pour contenir la représentation sous forme de chaîne de valeurs signées 32 bits et non signées 32 bits. La classe inclut une Sign propriété qui indique le signe de sa valeur hexadécimale.

using System;
using System.Globalization;
using System.Text.RegularExpressions;

public enum SignBit { Negative=-1, Zero=0, Positive=1 };

public struct HexString : IConvertible
{
   private SignBit signBit;
   private string hexString;

   public SignBit Sign
   {
      set { signBit = value; }
      get { return signBit; }
   }

   public string Value
   {
      set {
         if (value.Trim().Length > 8)
            throw new ArgumentException("The string representation of a 32-bit integer cannot have more than 8 characters.");
         else if (! Regex.IsMatch(value, "([0-9,A-F]){1,8}", RegexOptions.IgnoreCase))
            throw new ArgumentException("The hexadecimal representation of a 32-bit integer contains invalid characters.");
         else
            hexString = value;
      }
      get { return hexString; }
   }

   // IConvertible implementations.
   public TypeCode GetTypeCode()
   {
      return TypeCode.Object;
   }

   public bool ToBoolean(IFormatProvider provider)
   {
      return signBit != SignBit.Zero;
   }

   public byte ToByte(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is out of range of the Byte type.", Convert.ToInt32(hexString, 16)));
      else
         try {
            return Byte.Parse(hexString, NumberStyles.HexNumber);
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Byte type.", Convert.ToUInt32(hexString, 16)), e);
         }
   }

   public char ToChar(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToInt32(hexString, 16)));

      try {
         ushort codePoint = UInt16.Parse(this.hexString, NumberStyles.HexNumber);
         return Convert.ToChar(codePoint);
      }
      catch (OverflowException e) {
         throw new OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToUInt32(hexString, 16)), e);
      }
   }

   public DateTime ToDateTime(IFormatProvider provider)
   {
      throw new InvalidCastException("Hexadecimal to DateTime conversion is not supported.");
   }

   public decimal ToDecimal(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
      {
         int hexValue = Int32.Parse(hexString, NumberStyles.HexNumber);
         return Convert.ToDecimal(hexValue);
      }
      else
      {
         uint hexValue = UInt32.Parse(hexString, NumberStyles.HexNumber);
         return Convert.ToDecimal(hexValue);
      }
   }

   public double ToDouble(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToDouble(Int32.Parse(hexString, NumberStyles.HexNumber));
      else
         return Convert.ToDouble(UInt32.Parse(hexString, NumberStyles.HexNumber));
   }

   public short ToInt16(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToInt16(Int32.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToInt32(hexString, 16)), e);
         }
      else
         try {
            return Convert.ToInt16(UInt32.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToUInt32(hexString, 16)), e);
         }
   }

   public int ToInt32(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Int32.Parse(hexString, NumberStyles.HexNumber);
      else
         try {
            return Convert.ToInt32(UInt32.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt32(hexString, 16)), e);
         }
   }

   public long ToInt64(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToInt64(Int32.Parse(hexString, NumberStyles.HexNumber));
      else
         return Int64.Parse(hexString, NumberStyles.HexNumber);
   }

   public sbyte ToSByte(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToSByte(Int32.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is outside the range of the SByte type.",
                                                      Int32.Parse(hexString, NumberStyles.HexNumber), e));
         }
      else
         try {
            return Convert.ToSByte(UInt32.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is outside the range of the SByte type.",
                                                    UInt32.Parse(hexString, NumberStyles.HexNumber)), e);
         }
   }

   public float ToSingle(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToSingle(Int32.Parse(hexString, NumberStyles.HexNumber));
      else
         return Convert.ToSingle(UInt32.Parse(hexString, NumberStyles.HexNumber));
   }

   public string ToString(IFormatProvider provider)
   {
      return "0x" + this.hexString;
   }

   public object ToType(Type conversionType, IFormatProvider provider)
   {
      switch (Type.GetTypeCode(conversionType))
      {
         case TypeCode.Boolean:
            return this.ToBoolean(null);
         case TypeCode.Byte:
            return this.ToByte(null);
         case TypeCode.Char:
            return this.ToChar(null);
         case TypeCode.DateTime:
            return this.ToDateTime(null);
         case TypeCode.Decimal:
            return this.ToDecimal(null);
         case TypeCode.Double:
            return this.ToDouble(null);
         case TypeCode.Int16:
            return this.ToInt16(null);
         case TypeCode.Int32:
            return this.ToInt32(null);
         case TypeCode.Int64:
            return this.ToInt64(null);
         case TypeCode.Object:
            if (typeof(HexString).Equals(conversionType))
               return this;
            else
               throw new InvalidCastException(String.Format("Conversion to a {0} is not supported.", conversionType.Name));
         case TypeCode.SByte:
            return this.ToSByte(null);
         case TypeCode.Single:
            return this.ToSingle(null);
         case TypeCode.String:
            return this.ToString(null);
         case TypeCode.UInt16:
            return this.ToUInt16(null);
         case TypeCode.UInt32:
            return this.ToUInt32(null);
         case TypeCode.UInt64:
            return this.ToUInt64(null);
         default:
            throw new InvalidCastException(String.Format("Conversion to {0} is not supported.", conversionType.Name));
      }
   }

   public ushort ToUInt16(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt16 type.",
                                                   Int32.Parse(hexString, NumberStyles.HexNumber)));
      else
         try {
            return Convert.ToUInt16(UInt32.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the UInt16 type.", Convert.ToUInt32(hexString, 16)), e);
         }
   }

   public uint ToUInt32(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt32 type.",
                                                   Int32.Parse(hexString, NumberStyles.HexNumber)));
      else
         return Convert.ToUInt32(hexString, 16);
   }

   public ulong ToUInt64(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt64 type.",
                                                   Int32.Parse(hexString, NumberStyles.HexNumber)));
      else
         return Convert.ToUInt64(hexString, 16);
   }
}

open System
open System.Globalization
open System.Text.RegularExpressions

type SignBit =
    | Negative = -1
    | Zero = 0
    | Positive = 1

[<Struct>]
type HexString =
    val mutable private hexString: string

    val mutable Sign: SignBit

    member this.Value
        with get () = this.hexString
        and set (value: string) =
            if value.Trim().Length > 8 then
                invalidArg "value" "The string representation of a 32 bit integer cannot have more than eight characters."
            elif Regex.IsMatch(value, "([0-9,A-F]){1,8}", RegexOptions.IgnoreCase) |> not then
                invalidArg "value" "The hexadecimal representation of a 32-bit integer contains invalid characters."
            else
                this.hexString <- value

    interface IConvertible with
        // IConvertible implementations.
        member _.GetTypeCode() =
            TypeCode.Object

        member this.ToBoolean(provider: IFormatProvider) =
            this.Sign <> SignBit.Zero

        member this.ToByte(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                raise (OverflowException $"{Convert.ToInt32(this.hexString, 16)} is out of range of the Byte type.")
            else
                try
                    Byte.Parse(this.hexString, NumberStyles.HexNumber)
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToInt32(this.hexString, 16)} is out of range of the Byte type.", e) )

        member this.ToChar(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                raise (OverflowException $"{Convert.ToInt32(this.hexString, 16)} is out of range of the Char type.")

            try
                let codePoint = UInt16.Parse(this.hexString, NumberStyles.HexNumber)
                Convert.ToChar codePoint
            with :? OverflowException as e ->
                raise (OverflowException($"{Convert.ToInt32(this.hexString, 16)} is out of range of the Char type.", e) )

        member _.ToDateTime(provider: IFormatProvider) =
            raise (InvalidCastException "Hexadecimal to DateTime conversion is not supported.")

        member this.ToDecimal(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                let hexValue = Int32.Parse(this.hexString, NumberStyles.HexNumber)
                Convert.ToDecimal hexValue
            else
                let hexValue = UInt32.Parse(this.hexString, NumberStyles.HexNumber)
                Convert.ToDecimal hexValue

        member this.ToDouble(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                Convert.ToDouble(Int32.Parse(this.hexString, NumberStyles.HexNumber))
            else
                Convert.ToDouble(UInt32.Parse(this.hexString, NumberStyles.HexNumber))

        member this.ToInt16(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                try
                    Convert.ToInt16(Int32.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToInt32(this.hexString, 16)} is out of range of the Int16 type.", e) )
            else
                try
                    Convert.ToInt16(UInt32.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToInt32(this.hexString, 16)} is out of range of the Int16 type.", e) )

        member this.ToInt32(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                Int32.Parse(this.hexString, NumberStyles.HexNumber)
            else
                try
                    Convert.ToInt32(UInt32.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToInt32(this.hexString, 16)} is out of range of the Int32 type.", e) )

        member this.ToInt64(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                Convert.ToInt64(Int32.Parse(this.hexString, NumberStyles.HexNumber))
            else
                Int64.Parse(this.hexString, NumberStyles.HexNumber)

        member this.ToSByte(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                try
                    Convert.ToSByte(Int32.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Int32.Parse(this.hexString, NumberStyles.HexNumber)} is outside the range of the SByte type.", e) )
            else
                try
                    Convert.ToSByte(UInt32.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{UInt32.Parse(this.hexString, NumberStyles.HexNumber)} is outside the range of the SByte type.", e) )

        member this.ToSingle(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                Convert.ToSingle(Int32.Parse(this.hexString, NumberStyles.HexNumber))
            else
                Convert.ToSingle(UInt32.Parse(this.hexString, NumberStyles.HexNumber))

        member this.ToString(provider: IFormatProvider) =
            "0x" + this.hexString

        member this.ToType(conversionType: Type, provider: IFormatProvider) =
            let this = this :> IConvertible
            match Type.GetTypeCode conversionType with
            | TypeCode.Boolean ->
                this.ToBoolean null
            | TypeCode.Byte ->
                this.ToByte null
            | TypeCode.Char ->
                this.ToChar null
            | TypeCode.DateTime ->
                this.ToDateTime null
            | TypeCode.Decimal ->
                this.ToDecimal null
            | TypeCode.Double ->
                this.ToDouble null
            | TypeCode.Int16 ->
                this.ToInt16 null
            | TypeCode.Int32 ->
                this.ToInt32 null
            | TypeCode.Int64 ->
                this.ToInt64 null
            | TypeCode.Object ->
                if typeof<HexString>.Equals conversionType then
                    this
                else
                    raise (InvalidCastException $"Conversion to a {conversionType.Name} is not supported.")
            | TypeCode.SByte ->
                this.ToSByte null
            | TypeCode.Single ->
                this.ToSingle null
            | TypeCode.String ->
                this.ToString null
            | TypeCode.UInt16 ->
                this.ToUInt16 null
            | TypeCode.UInt32 ->
                this.ToUInt32 null
            | TypeCode.UInt64 ->
                this.ToUInt64 null
            | _ ->
                    raise (InvalidCastException $"Conversion to {conversionType.Name} is not supported.")

        member this.ToUInt16(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                raise (OverflowException $"{Int32.Parse(this.hexString, NumberStyles.HexNumber)} is outside the range of the UInt16 type.")
            else
                try
                    Convert.ToUInt16(UInt32.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToInt32(this.hexString, 16)} is out of range of the UInt16 type.", e) )

        member this.ToUInt32(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                raise (OverflowException $"{Int32.Parse(this.hexString, NumberStyles.HexNumber)} is outside the range of the UInt32 type.")
            else
                Convert.ToUInt32(this.hexString, 16)

        member this.ToUInt64(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                raise (OverflowException $"{Int32.Parse(this.hexString, NumberStyles.HexNumber)} is outside the range of the UInt64 type.")
            else
                Convert.ToUInt64(this.hexString, 16)

Imports System.Globalization
Imports System.Text.RegularExpressions

Public Enum SignBit As Integer
   Positive = 1
   Zero = 0
   Negative = -1
End Enum

Public Structure HexString : Implements IConvertible
   Private signBit As SignBit
   Private hexString As String
   
   Public Property Sign As SignBit
      Set
         signBit = value
      End Set
      Get
         Return signBit
      End Get
   End Property
   
   Public Property Value As String
      Set
         If value.Trim().Length > 8 Then
            Throw New ArgumentException("The string representation of a 32-bit integer cannot have more than 8 characters.")
         Else If Not Regex.IsMatch(value, "([0-9,A-F]){1,8}", RegexOptions.IgnoreCase) Then
            Throw New ArgumentException("The hexadecimal representation of a 32-bit integer contains invalid characters.")             
         Else
            hexString = value
         End If   
      End Set
      Get
         Return hexString
      End Get
   End Property
   
   ' IConvertible implementations.
   Public Function GetTypeCode() As TypeCode _
                   Implements IConvertible.GetTypeCode
      Return TypeCode.Object
   End Function
   
   Public Function ToBoolean(provider As IFormatProvider) As Boolean _
                   Implements IConvertible.ToBoolean
      Return signBit <> SignBit.Zero
   End Function 
   
   Public Function ToByte(provider As IFormatProvider) As Byte _
                   Implements IConvertible.ToByte
      If signBit = SignBit.Negative Then
         Throw New OverflowException(String.Format("{0} is out of range of the Byte type.", Convert.ToInt32(hexString, 16))) 
      Else
         Try
            Return Byte.Parse(hexString, NumberStyles.HexNumber)
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Byte type.", Convert.ToUInt32(hexString, 16)), e)
         End Try   
      End If       
   End Function
   
   Public Function ToChar(provider As IFormatProvider) As Char _
                   Implements IConvertible.ToChar
      If signBit = SignBit.Negative Then 
         Throw New OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToInt32(hexString, 16)))
      End If
      
      Try
         Dim codePoint As UInt16 = UInt16.Parse(Me.hexString, NumberStyles.HexNumber)
         Return Convert.ToChar(codePoint)
      Catch e As OverflowException
         Throw New OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToUInt32(hexString, 16)))
      End Try      
   End Function 
   
   Public Function ToDateTime(provider As IFormatProvider) As Date _
                   Implements IConvertible.ToDateTime
      Throw New InvalidCastException("Hexadecimal to DateTime conversion is not supported.")
   End Function
   
   Public Function ToDecimal(provider As IFormatProvider) As Decimal _
                   Implements IConvertible.ToDecimal
      If signBit = SignBit.Negative Then
         Dim hexValue As Integer = Int32.Parse(hexString, NumberStyles.HexNumber)
         Return Convert.ToDecimal(hexValue)
      Else
         Dim hexValue As UInteger = UInt32.Parse(hexString, NumberStyles.HexNumber)
         Return Convert.ToDecimal(hexValue)
      End If
   End Function
   
   Public Function ToDouble(provider As IFormatProvider) As Double _
                   Implements IConvertible.ToDouble
      If signBit = SignBit.Negative Then
         Return Convert.ToDouble(Int32.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Convert.ToDouble(UInt32.Parse(hexString, NumberStyles.HexNumber))
      End If   
   End Function   
   
   Public Function ToInt16(provider As IFormatProvider) As Int16 _
                   Implements IConvertible.ToInt16
      If signBit = SignBit.Negative Then
         Try
            Return Convert.ToInt16(Int32.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToInt32(hexString, 16)), e)
         End Try
      Else
         Try
            Return Convert.ToInt16(UInt32.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToUInt32(hexString, 16)), e)
         End Try
      End If   
   End Function
   
   Public Function ToInt32(provider As IFormatProvider) As Int32 _
                   Implements IConvertible.ToInt32
      If signBit = SignBit.Negative Then
         Return Int32.Parse(hexString, NumberStyles.HexNumber)
      Else
         Try
            Return Convert.ToInt32(UInt32.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt32(hexString, 16)), e)
         End Try   
      End If   
   End Function
   
   Public Function ToInt64(provider As IFormatProvider) As Int64 _
                   Implements IConvertible.ToInt64
      If signBit = SignBit.Negative Then
         Return Convert.ToInt64(Int32.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Int64.Parse(hexString, NumberStyles.HexNumber)
      End If   
   End Function
   
   Public Function ToSByte(provider As IFormatProvider) As SByte _
                   Implements IConvertible.ToSByte
      If signBit = SignBit.Negative Then
         Try
            Return Convert.ToSByte(Int32.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is outside the range of the SByte type.", _
                                                      Int32.Parse(hexString, NumberStyles.HexNumber), e))
         End Try
      Else
         Try
            Return Convert.ToSByte(UInt32.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is outside the range of the SByte type.", _
                                                    UInt32.Parse(hexString, NumberStyles.HexNumber)), e)
         End Try   
      End If
   End Function

   Public Function ToSingle(provider As IFormatProvider) As Single _
                   Implements IConvertible.ToSingle
      If signBit = SignBit.Negative Then
         Return Convert.ToSingle(Int32.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Convert.ToSingle(UInt32.Parse(hexString, NumberStyles.HexNumber))
      End If   
   End Function

   Public Overloads Function ToString(provider As IFormatProvider) As String _
                   Implements IConvertible.ToString
      Return "0x" & Me.hexString
   End Function
   
   Public Function ToType(conversionType As Type, provider As IFormatProvider) As Object _
                   Implements IConvertible.ToType
      Select Case Type.GetTypeCode(conversionType)
         Case TypeCode.Boolean 
            Return Me.ToBoolean(Nothing)
         Case TypeCode.Byte
            Return Me.ToByte(Nothing)
         Case TypeCode.Char
            Return Me.ToChar(Nothing)
         Case TypeCode.DateTime
            Return Me.ToDateTime(Nothing)
         Case TypeCode.Decimal
            Return Me.ToDecimal(Nothing)
         Case TypeCode.Double
            Return Me.ToDouble(Nothing)
         Case TypeCode.Int16
            Return Me.ToInt16(Nothing)
         Case TypeCode.Int32
            Return Me.ToInt32(Nothing)
         Case TypeCode.Int64
            Return Me.ToInt64(Nothing)
         Case TypeCode.Object
            If GetType(HexString).Equals(conversionType) Then
               Return Me
            Else
               Throw New InvalidCastException(String.Format("Conversion to a {0} is not supported.", conversionType.Name))
            End If 
         Case TypeCode.SByte
            Return Me.ToSByte(Nothing)
         Case TypeCode.Single
            Return Me.ToSingle(Nothing)
         Case TypeCode.String
            Return Me.ToString(Nothing)
         Case TypeCode.UInt16
            Return Me.ToUInt16(Nothing)
         Case TypeCode.UInt32
            Return Me.ToUInt32(Nothing)
         Case TypeCode.UInt64
            Return Me.ToUInt64(Nothing)   
         Case Else
            Throw New InvalidCastException(String.Format("Conversion to {0} is not supported.", conversionType.Name))   
      End Select
   End Function
   
   Public Function ToUInt16(provider As IFormatProvider) As UInt16 _
                   Implements IConvertible.ToUInt16
      If signBit = SignBit.Negative Then
         Throw New OverflowException(String.Format("{0} is outside the range of the UInt16 type.", _
                                                   Int32.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Try
            Return Convert.ToUInt16(UInt32.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the UInt16 type.", Convert.ToUInt32(hexString, 16)), e)
         End Try            
      End If   
   End Function

   Public Function ToUInt32(provider As IFormatProvider) As UInt32 _
                   Implements IConvertible.ToUInt32
      If signBit = SignBit.Negative Then
         Throw New OverflowException(String.Format("{0} is outside the range of the UInt32 type.", _
                                                   Int32.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt32(hexString, 16)
      End If   
   End Function
   
   Public Function ToUInt64(provider As IFormatProvider) As UInt64 _
                   Implements IConvertible.ToUInt64
      If signBit = SignBit.Negative Then
         Throw New OverflowException(String.Format("{0} is outside the range of the UInt64 type.", _
                                                   Int32.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt64(hexString, 16)
      End If   
   End Function
   
End Structure

L’exemple suivant montre qu’un appel à la ToUInt32(Object, IFormatProvider) méthode qui passe un HexString objet en tant que paramètre appelle à son tour l’implémentation IConvertible.ToUInt32 de la HexString classe .

public class Example
{
   public static void Main()
   {
      uint positiveValue = 320000000;
      int negativeValue = -1;

      HexString positiveString = new HexString();
      positiveString.Sign = (SignBit) Math.Sign(positiveValue);
      positiveString.Value = positiveValue.ToString("X4");

      HexString negativeString = new HexString();
      negativeString.Sign = (SignBit) Math.Sign(negativeValue);
      negativeString.Value = negativeValue.ToString("X4");

      try {
         Console.WriteLine("0x{0} converts to {1}.", positiveString.Value, Convert.ToUInt32(positiveString));
      }
      catch (OverflowException) {
         Console.WriteLine("{0} is outside the range of the UInt32 type.",
                           Int32.Parse(positiveString.Value, NumberStyles.HexNumber));
      }

      try {
         Console.WriteLine("0x{0} converts to {1}.", negativeString.Value, Convert.ToUInt32(negativeString));
      }
      catch (OverflowException) {
         Console.WriteLine("{0} is outside the range of the UInt32 type.",
                           Int32.Parse(negativeString.Value, NumberStyles.HexNumber));
      }
   }
}
// The example dosplays the following output:
//       0x1312D000 converts to 320000000.
//       -1 is outside the range of the UInt32 type.

let positiveValue = 320000000u
let negativeValue = -1

let mutable positiveString = HexString()
positiveString.Sign <- Math.Sign positiveValue |> enum
positiveString.Value <- positiveValue.ToString "X4"

let mutable negativeString = HexString()
negativeString.Sign <- sign negativeValue |> enum
negativeString.Value <- negativeValue.ToString "X4"

try
    printfn $"0x{positiveString.Value} converts to {Convert.ToUInt32 positiveString}."
with :? OverflowException ->
    printfn $"{Int32.Parse(positiveString.Value, NumberStyles.HexNumber)} is outside the range of the UInt32 type."

try
    printfn $"0x{negativeString.Value} converts to {Convert.ToUInt32 negativeString}."
with :? OverflowException ->
    printfn $"{Int32.Parse(negativeString.Value, NumberStyles.HexNumber)} is outside the range of the UInt32 type."
// The example dosplays the following output:
//       0x1312D000 converts to 320000000.
//       -1 is outside the range of the UInt32 type.

Module Example
   Public Sub Main()
      Dim positiveValue As UInt32 = 320000000
      Dim negativeValue As Int32 = -1
      
      
      Dim positiveString As New HexString()
      positiveString.Sign = CType(Math.Sign(positiveValue), SignBit)
      positiveString.Value = positiveValue.ToString("X4")
      
      Dim negativeString As New HexString()
      negativeString.Sign = CType(Math.Sign(negativeValue), SignBit)
      negativeString.Value = negativeValue.ToString("X4")
      
      Try
         Console.WriteLine("0x{0} converts to {1}.", positiveString.Value, Convert.ToUInt32(positiveString))
      Catch e As OverflowException
         Console.WriteLine("{0} is outside the range of the UInt32 type.", _
                           Int32.Parse(positiveString.Value, NumberStyles.HexNumber))
      End Try

      Try
         Console.WriteLine("0x{0} converts to {1}.", negativeString.Value, Convert.ToUInt32(negativeString))
      Catch e As OverflowException
         Console.WriteLine("{0} is outside the range of the UInt32 type.", _
                           Int32.Parse(negativeString.Value, NumberStyles.HexNumber))
      End Try   
   End Sub
End Module
' The example dosplays the following output:
'       0x1312D000 converts to 320000000.
'       -1 is outside the range of the UInt32 type.

Remarques

La valeur de retour est le résultat de l’appel de la IConvertible.ToUInt32 méthode du type sous-jacent de value.

provider permet à l’utilisateur de spécifier des informations de conversion spécifiques à la culture sur le contenu de value. Par exemple, si value est un String qui représente un nombre, provider peut fournir des informations spécifiques à la culture sur la notation utilisée pour représenter ce nombre.

Les types de base ignorent provider; toutefois, le paramètre peut être utilisé si value est un type défini par l’utilisateur qui implémente l’interface IConvertible .

S’applique à

ToUInt32(SByte)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier signé 8 bits spécifié en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(System::SByte value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (sbyte value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : sbyte -> uint32

Public Shared Function ToUInt32 (value As SByte) As UInteger

Paramètres

value: SByte

Entier signé 8 bits à convertir.

Retours

UInt32

Entier non signé 32 bits équivalent à value.

Attributs: CLSCompliantAttribute

Exceptions

OverflowException

value est inférieur à zéro.

Exemples

L’exemple suivant tente de convertir chaque élément d’un tableau d’octets signé en entier non signé.

sbyte[] numbers = { SByte.MinValue, -1, 0, 10, SByte.MaxValue };
uint result;

foreach (sbyte number in numbers)
{
   try {
      result = Convert.ToUInt32(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The SByte value -128 is outside the range of the UInt32 type.
//    The SByte value -1 is outside the range of the UInt32 type.
//    Converted the SByte value 0 to the UInt32 value 0.
//    Converted the SByte value 10 to the UInt32 value 10.
//    Converted the SByte value 127 to the UInt32 value 127.

let numbers = [| SByte.MinValue; -1y; 0y; 10y; SByte.MaxValue |]

for number in numbers do
    try
        let result = Convert.ToUInt16 number
        printfn $"Converted the {number.GetType().Name} value '{number}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn $"{number} is outside the range of the UInt32 type."
// The example displays the following output:
//    -128 is outside the range of the UInt32 type.
//    -1 is outside the range of the UInt32 type.
//    Converted the SByte value '0' to the UInt32 value 0.
//    Converted the SByte value '10' to the UInt32 value 10.
//    Converted the SByte value '127' to the UInt32 value 127.

Dim numbers() As SByte = { SByte.MinValue, -1, 0, 10, SByte.MaxValue }
Dim result As UInteger

For Each number As SByte In numbers
   Try
      result = Convert.ToUInt32(number)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The SByte value -128 is outside the range of the UInt32 type.
'    The SByte value -1 is outside the range of the UInt32 type.
'    Converted the SByte value 0 to the UInt32 value 0.
'    Converted the SByte value 10 to the UInt32 value 10.
'    Converted the SByte value 127 to the UInt32 value 127.

S’applique à

ToUInt32(Char)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur du caractère Unicode spécifié en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(char value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (char value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : char -> uint32

Public Shared Function ToUInt32 (value As Char) As UInteger

Paramètres

value: Char

Caractère Unicode à convertir.

Retours

UInt32

Entier non signé 32 bits équivalent à value.

Attributs: CLSCompliantAttribute

Exemples

L’exemple suivant convertit chaque élément d’un tableau de caractères en entier non signé.

char[] chars = { 'a', 'z', '\u0007', '\u03FF',
                 '\u7FFF', '\uFFFE' };
uint result;

foreach (char ch in chars)
{
   result = Convert.ToUInt32(ch);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                     ch.GetType().Name, ch,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the Char value 'a' to the UInt32 value 97.
//    Converted the Char value 'z' to the UInt32 value 122.
//    Converted the Char value '' to the UInt32 value 7.
//    Converted the Char value 'Ͽ' to the UInt32 value 1023.
//    Converted the Char value '翿' to the UInt32 value 32767.
//    Converted the Char value '' to the UInt32 value 65534.

let chars = 
    [| 'a'; 'z'; '\u0007'; '\u03FF'; '\u7FFF'; '\uFFFE' |]

for ch in chars do
    try
        let result = Convert.ToUInt16 ch
        printfn $"Converted the {ch.GetType().Name} value '{ch}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn $"Unable to convert u+{int ch:X4} to a UInt16."
// The example displays the following output:
//    Converted the Char value 'a' to the UInt32 value 97.
//    Converted the Char value 'z' to the UInt32 value 122.
//    Converted the Char value '' to the UInt32 value 7.
//    Converted the Char value '?' to the UInt32 value 1023.
//    Converted the Char value '?' to the UInt32 value 32767.
//    Converted the Char value '?' to the UInt32 value 65534.

Dim chars() As Char = { "a"c, "z"c, ChrW(7), ChrW(1023), _
                        ChrW(Short.MaxValue), ChrW(&hFFFE) }
Dim result As UInteger

For Each ch As Char in chars
   result = Convert.ToUInt32(ch)
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                     ch.GetType().Name, ch, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the Char value 'a' to the UInt32 value 97.
'    Converted the Char value 'z' to the UInt32 value 122.
'    Converted the Char value '' to the UInt32 value 7.
'    Converted the Char value 'Ͽ' to the UInt32 value 1023.
'    Converted the Char value '翿' to the UInt32 value 32767.
'    Converted the Char value '' to the UInt32 value 65534.

S’applique à

ToUInt32(Int64)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier signé 64 bits spécifié en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(long value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (long value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : int64 -> uint32

Public Shared Function ToUInt32 (value As Long) As UInteger

Paramètres

value: Int64

Entier signé 64 bits à convertir.

Retours

UInt32

Entier non signé 32 bits équivalent à value.

Attributs: CLSCompliantAttribute

Exceptions

OverflowException

value est inférieur à zéro ou supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant tente de convertir chaque élément d’un tableau d’entiers longs en entier non signé.

long[] numbers = { Int64.MinValue, -1, 0, 121, 340, Int64.MaxValue };
uint result;
foreach (long number in numbers)
{
   try {
      result = Convert.ToUInt32(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The Int64 value -9223372036854775808 is outside the range of the UInt32 type.
//    The Int64 value -1 is outside the range of the UInt32 type.
//    Converted the Int64 value 0 to the UInt32 value 0.
//    Converted the Int64 value 121 to the UInt32 value 121.
//    Converted the Int64 value 340 to the UInt32 value 340.
//    The Int64 value 9223372036854775807 is outside the range of the UInt32 type.

let numbers = [| Int64.MinValue; -1; 0; 121; 340; Int64.MaxValue |]

for number in numbers do
    try
        let result = Convert.ToUInt16 number
        printfn $"Converted the {number.GetType().Name} value '{number}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn "The {number.GetType().Name} value {number} is outside the range of the UInt32 type."
// The example displays the following output:
//    The Int64 value -9223372036854775808 is outside the range of the UInt32 type.
//    The Int64 value -1 is outside the range of the UInt32 type.
//    Converted the Int64 value '0' to the UInt32 value 0.
//    Converted the Int64 value '121' to the UInt32 value 121.
//    Converted the Int64 value '340' to the UInt32 value 340.
//    The Int64 value 9223372036854775807 is outside the range of the UInt32 type.

Dim numbers() As Long = { Int64.MinValue, -1, 0, 121, 340, Int64.MaxValue }
Dim result As UInteger
For Each number As Long In numbers
   Try
      result = Convert.ToUInt32(number)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The Int64 value -9223372036854775808 is outside the range of the UInt32 type.
'    The Int64 value -1 is outside the range of the UInt32 type.
'    Converted the Int64 value 0 to the UInt32 value 0.
'    Converted the Int64 value 121 to the UInt32 value 121.
'    Converted the Int64 value 340 to the UInt32 value 340.
'    The Int64 value 9223372036854775807 is outside the range of the UInt32 type.

S’applique à

ToUInt32(Int32)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier signé 32 bits spécifié en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(int value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (int value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : int -> uint32

Public Shared Function ToUInt32 (value As Integer) As UInteger

Paramètres

value: Int32

Entier signé 32 bits à convertir.

Retours

UInt32

Entier non signé 32 bits équivalent à value.

Attributs: CLSCompliantAttribute

Exceptions

OverflowException

value est inférieur à zéro.

Exemples

L’exemple suivant tente de convertir chaque élément d’un tableau d’entiers en entier non signé.

int[] numbers = { Int32.MinValue, -1203, 0, 121, 1340, Int32.MaxValue };
uint result;
foreach (int number in numbers)
{
   try {
      result = Convert.ToUInt32(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        number.GetType().Name, number,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The Int32 value -2147483648 is outside the range of the UInt32 type.
//    The Int32 value -1203 is outside the range of the UInt32 type.
//    Converted the Int32 value 0 to the UInt32 value 0.
//    Converted the Int32 value 121 to the UInt32 value 121.
//    Converted the Int32 value 1340 to the UInt32 value 1340.
//    Converted the Int32 value 2147483647 to the UInt32 value 2147483647.

let numbers = [| Int32.MinValue; -1; 0; 121; 340; Int32.MaxValue |]

for number in numbers do
    try
        let result = Convert.ToUInt16 number
        printfn $"Converted the {number.GetType().Name} value '{number}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn "The {number.GetType().Name} value {number} is outside the range of the UInt32 type."
                        
// The example displays the following output:
//    The Int32 value -2147483648 is outside the range of the UInt32 type.
//    The Int32 value -1 is outside the range of the UInt32 type.
//    Converted the Int32 value '0' to the UInt32 value 0.
//    Converted the Int32 value '121' to the UInt32 value 121.
//    Converted the Int32 value '340' to the UInt32 value 340.
//    The Int32 value 2147483647 is outside the range of the UInt32 type.

Dim numbers() As Integer = { Int32.MinValue, -1203, 0, 121, 1340, Int32.MaxValue }
Dim result As UInteger
For Each number As Integer In numbers
   Try
      result = Convert.ToUInt32(number)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        number.GetType().Name, number, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The Int32 value -2147483648 is outside the range of the UInt32 type.
'    The Int32 value -1203 is outside the range of the UInt32 type.
'    Converted the Int32 value 0 to the UInt32 value 0.
'    Converted the Int32 value 121 to the UInt32 value 121.
'    Converted the Int32 value 1340 to the UInt32 value 1340.
'    Converted the Int32 value 2147483647 to the UInt32 value 2147483647.

S’applique à

ToUInt32(Int16)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier signé 16 bits spécifié en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(short value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (short value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : int16 -> uint32

Public Shared Function ToUInt32 (value As Short) As UInteger

Paramètres

value: Int16

Entier signé 16 bits à convertir.

Retours

UInt32

Entier non signé 32 bits équivalent à value.

Attributs: CLSCompliantAttribute

Exceptions

OverflowException

value est inférieur à zéro.

Exemples

L’exemple suivant tente de convertir chaque élément d’un tableau d’entiers 16 bits en entier non signé.

short[] numbers= { Int16.MinValue, -1, 0, 121, 340, Int16.MaxValue };
uint result;

foreach (short number in numbers)
{
   try {
      result = Convert.ToUInt32(number);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                           number.GetType().Name, number,
                           result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The Int16 value -32768 is outside the range of the UInt32 type.
//    The Int16 value -1 is outside the range of the UInt32 type.
//    Converted the Int16 value 0 to the UInt32 value 0.
//    Converted the Int16 value 121 to the UInt32 value 121.
//    Converted the Int16 value 340 to the UInt32 value 340.
//    Converted the Int16 value 32767 to the UInt32 value 32767.

let numbers = [| Int16.MinValue; -132s; 0s; 121s; 16103s; Int16.MaxValue |]

for number in numbers do
    try
        let result = Convert.ToUInt16 number
        printfn $"Converted the {number.GetType().Name} value '{number}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn $"The {number.GetType().Name} value {number} is outside the range of the UInt32 type."
// The example displays the following output:
//    The Int16 value -32768 is outside the range of the UInt32 type.
//    The Int16 value -132 is outside the range of the UInt32 type.
//    Converted the Int16 value '0' to the UInt32 value 0.
//    Converted the Int16 value '121' to the UInt32 value 121.
//    Converted the Int16 value '16103' to the UInt32 value 16103.
//    Converted the Int16 value '32767' to the UInt32 value 32767.

Dim numbers() As Short = { Int16.MinValue, -1, 0, 121, 340, Int16.MaxValue }
Dim result As UInteger

For Each number As Short In numbers
   Try
      result = Convert.ToUInt32(number)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                           number.GetType().Name, number, _
                           result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The Int16 value -32768 is outside the range of the UInt32 type.
'    The Int16 value -1 is outside the range of the UInt32 type.
'    Converted the Int16 value 0 to the UInt32 value 0.
'    Converted the Int16 value 121 to the UInt32 value 121.
'    Converted the Int16 value 340 to the UInt32 value 340.
'    Converted the Int16 value 32767 to the UInt32 value 32767.

S’applique à

ToUInt32(Double)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur du nombre à virgule flottante double précision spécifié en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(double value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (double value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : double -> uint32

Public Shared Function ToUInt32 (value As Double) As UInteger

Paramètres

value: Double

Nombre à virgule flottante double précision à convertir.

Retours

UInt32

value, arrondi à l’entier non signé 32 bits le plus proche. Si value se trouve entre deux nombres entiers, le nombre pair est retourné (par exemple, 4,5 est converti en 4 et 5,5 en 6).

Attributs: CLSCompliantAttribute

Exceptions

OverflowException

value est inférieur à zéro ou supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant tente de convertir chaque élément d’un tableau de Double valeurs en entier non signé.

double[] values= { Double.MinValue, -1.38e10, -1023.299, -12.98,
                   0, 9.113e-16, 103.919, 17834.191, Double.MaxValue };
uint result;

foreach (double value in values)
{
   try {
      result = Convert.ToUInt32(value);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.",
                        value.GetType().Name, value);
   }
}
// The example displays the following output:
//    The Double value -1.79769313486232E+308 is outside the range of the UInt32 type.
//    The Double value -13800000000 is outside the range of the UInt32 type.
//    The Double value -1023.299 is outside the range of the UInt32 type.
//    The Double value -12.98 is outside the range of the UInt32 type.
//    Converted the Double value '0' to the UInt32 value 0.
//    Converted the Double value '9.113E-16' to the UInt32 value 0.
//    Converted the Double value '103.919' to the UInt32 value 104.
//    Converted the Double value '17834.191' to the UInt32 value 17834.
//    The Double value 1.79769313486232E+308 is outside the range of the UInt32 type.

let numbers = 
    [| Double.MinValue; -1.38e10; -1023.299; -12.98
       0; 9.113e-16; 103.919; 17834.191; Double.MaxValue |]

for number in numbers do
    try
        let result = Convert.ToUInt16 number
        printfn $"Converted the {number.GetType().Name} value '{number}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn $"{number} is outside the range of the UInt32 type."
// The example displays the following output:
//    -1.79769313486232E+308 is outside the range of the UInt32 type.
//    -13800000000 is outside the range of the UInt32 type.
//    -1023.299 is outside the range of the UInt32 type.
//    -12.98 is outside the range of the UInt32 type.
//    Converted the Double value '0' to the UInt32 value 0.
//    Converted the Double value '9.113E-16' to the UInt32 value 0.
//    Converted the Double value '103.919' to the UInt32 value 104.
//    Converted the Double value '17834.191' to the UInt32 value 17834.
//    1.79769313486232E+308 is outside the range of the UInt32 type.

Dim values() As Double = { Double.MinValue, -1.38e10, -1023.299, -12.98, _
                           0, 9.113e-16, 103.919, 17834.191, Double.MaxValue }
Dim result As UInteger

For Each value As Double In values
   Try
      result = Convert.ToUInt32(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.", _
                        value.GetType().Name, value)
   End Try
Next
' The example displays the following output:
'    The Double value -1.79769313486232E+308 is outside the range of the UInt32 type.
'    The Double value -13800000000 is outside the range of the UInt32 type.
'    The Double value -1023.299 is outside the range of the UInt32 type.
'    The Double value -12.98 is outside the range of the UInt32 type.
'    Converted the Double value '0' to the UInt32 value 0.
'    Converted the Double value '9.113E-16' to the UInt32 value 0.
'    Converted the Double value '103.919' to the UInt32 value 104.
'    Converted the Double value '17834.191' to the UInt32 value 17834.
'    The Double value 1.79769313486232E+308 is outside the range of the UInt32 type.

Voir aussi

Double
Round

S’applique à

ToUInt32(Decimal)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur du nombre décimal spécifié en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(System::Decimal value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (decimal value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : decimal -> uint32

Public Shared Function ToUInt32 (value As Decimal) As UInteger

Paramètres

value: Decimal

Nombre décimal à convertir.

Retours

UInt32

value, arrondi à l’entier non signé 32 bits le plus proche. Si value se trouve entre deux nombres entiers, le nombre pair est retourné (par exemple, 4,5 est converti en 4 et 5,5 en 6).

Attributs: CLSCompliantAttribute

Exceptions

OverflowException

value est inférieur à zéro ou supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant tente de convertir chaque élément d’un tableau de Decimal valeurs en entier non signé.

decimal[] values= { Decimal.MinValue, -1034.23m, -12m, 0m, 147m,
                    199.55m, 9214.16m, Decimal.MaxValue };
uint result;

foreach (decimal value in values)
{
   try {
      result = Convert.ToUInt32(value);
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.",
                        value.GetType().Name, value);
   }
}
// The example displays the following output:
//    The Decimal value -79228162514264337593543950335 is outside the range of the UInt32 type.
//    The Decimal value -1034.23 is outside the range of the UInt32 type.
//    The Decimal value -12 is outside the range of the UInt32 type.
//    Converted the Decimal value '0' to the UInt32 value 0.
//    Converted the Decimal value '147' to the UInt32 value 147.
//    Converted the Decimal value '199.55' to the UInt32 value 200.
//    Converted the Decimal value '9214.16' to the UInt32 value 9214.
//    The Decimal value 79228162514264337593543950335 is outside the range of the UInt32 type.

let numbers = 
    [| Decimal.MinValue; -1034.23m; -12m; 0m; 147m; 9214.16m; Decimal.MaxValue |]

for number in numbers do
    try
        let result = Convert.ToUInt16 number
        printfn $"Converted the {number.GetType().Name} value '{number}' to the {result.GetType().Name} value {result}."
    with :? OverflowException ->
        printfn $"{number} is outside the range of the UInt32 type."
// The example displays the following output:
//    -79228162514264337593543950335 is outside the range of the UInt32 type.
//    -1034.23 is outside the range of the UInt32 type.
//    -12 is outside the range of the UInt32 type.
//    Converted the Decimal value '0' to the UInt32 value 0.
//    Converted the Decimal value '147' to the UInt32 value 147.
//    Converted the Decimal value '9214.16' to the UInt32 value 9214.
//    79228162514264337593543950335 is outside the range of the UInt32 type.

Dim values() As Decimal = { Decimal.MinValue, -1034.23d, -12d, 0d, 147d, _
                            199.55d, 9214.16d, Decimal.MaxValue }
Dim result As UInteger

For Each value As Decimal In values
   Try
      result = Convert.ToUInt32(value)
      Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("{0} is outside the range of the UInt32 type.", _
                        value)
   End Try
Next
' The example displays the following output:
'    -79228162514264337593543950335 is outside the range of the UInt32 type.
'    -1034.23 is outside the range of the UInt32 type.
'    -12 is outside the range of the UInt32 type.
'    Converted the Decimal value '0' to the UInt32 value 0.
'    Converted the Decimal value '147' to the UInt32 value 147.
'    Converted the Decimal value '199.55' to the UInt32 value 200.
'    Converted the Decimal value '9214.16' to the UInt32 value 9214.
'    79228162514264337593543950335 is outside the range of the UInt32 type.

Voir aussi

Round

S’applique à

ToUInt32(Object)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'objet spécifié en entier non signé 32 bits.

public:
 static System::UInt32 ToUInt32(System::Object ^ value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (object value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (object? value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : obj -> uint32

Public Shared Function ToUInt32 (value As Object) As UInteger

Paramètres

value: Object

Objet qui implémente l'interface IConvertible ou null.

Retours

UInt32

Entier non signé 32 bits équivalent à value, ou 0 (zéro) si value est null.

Attributs: CLSCompliantAttribute

Exceptions

FormatException

value n’a pas un format approprié.

InvalidCastException

value n’implémente pas l’interface IConvertible .

- ou -

La conversion n’est pas prise en charge.

OverflowException

value représente un nombre inférieur à UInt32.MinValue ou supérieur à UInt32.MaxValue.

Exemples

L’exemple suivant tente de convertir chaque élément d’un tableau d’objets en entier non signé.

object[] values = { true, -12, 163, 935, 'x', new DateTime(2009, 5, 12),
                    "104", "103.0", "-1",
                    "1.00e2", "One", 1.00e2, 16.3e42};
uint result;

foreach (object value in values)
{
   try {
      result = Convert.ToUInt32(value);
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                        value.GetType().Name, value,
                        result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("The {0} value '{1}' is outside the range of the UInt32 type.",
                        value.GetType().Name, value);
   }
   catch (FormatException) {
      Console.WriteLine("The {0} value {1} is not in a recognizable format.",
                        value.GetType().Name, value);
   }
   catch (InvalidCastException) {
      Console.WriteLine("No conversion to a UInt32 exists for the {0} value '{1}'.",
                        value.GetType().Name, value);
   }
}
// The example displays the following output:
//    Converted the Boolean value True to the UInt32 value 1.
//    The Int32 value '-12' is outside the range of the UInt32 type.
//    Converted the Int32 value 163 to the UInt32 value 163.
//    Converted the Int32 value 935 to the UInt32 value 935.
//    Converted the Char value x to the UInt32 value 120.
//    No conversion to a UInt32 exists for the DateTime value '5/12/2009 12:00:00 AM'.
//    Converted the String value 104 to the UInt32 value 104.
//    The String value 103.0 is not in a recognizable format.
//    The String value '-1' is outside the range of the UInt32 type.
//    The String value 1.00e2 is not in a recognizable format.
//    The String value One is not in a recognizable format.
//    Converted the Double value 100 to the UInt32 value 100.
//    The Double value '1.63E+43' is outside the range of the UInt32 type.

let values: obj[] =
    [| true; -12; 163; 935; 'x'; DateTime(2009, 5, 12)
       "104"; "103.0"; "-1"; "1.00e2"; "One"; 1.00e2 |]

for value in values do
    try
        let result = Convert.ToUInt16 value
        printfn $"Converted the {value.GetType().Name} value '{value}' to the {result.GetType().Name} value {result}."
    with 
    | :? OverflowException ->
        printfn $"The {value.GetType().Name} value {value} is outside the range of the UInt32 type."
    | :? FormatException ->
        printfn $"The {value.GetType().Name} value {value} is not in a recognizable format."
    | :? InvalidCastException ->
        printfn $"No conversion to a UInt16 exists for the {value.GetType().Name} value {value}."
// The example displays the following output:
//    Converted the Boolean value 'True' to the UInt32 value 1.
//    The Int32 value -12 is outside the range of the UInt32 type.
//    Converted the Int32 value '163' to the UInt32 value 163.
//    Converted the Int32 value '935' to the UInt32 value 935.
//    Converted the Char value 'x' to the UInt32 value 120.
//    No conversion to a UInt16 exists for the DateTime value 5/12/2009 12:00:00 AM.
//    Converted the String value '104' to the UInt32 value 104.
//    The String value 103.0 is not in a recognizable format.
//    The String value -1 is outside the range of the UInt32 type.
//    The String value 1.00e2 is not in a recognizable format.
//    The String value One is not in a recognizable format.
//    Converted the Double value '100' to the UInt32 value 100.

Dim values() As Object = { True, -12, 163, 935, "x"c, #5/12/2009#, _
                           "104", "103.0", "-1", _
                           "1.00e2", "One", 1.00e2, 16.3e42}
Dim result As UInteger

For Each value As Object In values
   Try
      result = Convert.ToUInt32(value)
      Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                        value.GetType().Name, value, _
                        result.GetType().Name, result)
   Catch e As OverflowException
      Console.WriteLine("The {0} value {1} is outside the range of the UInt32 type.", _
                        value.GetType().Name, value)
   Catch e As FormatException
      Console.WriteLine("The {0} value {1} is not in a recognizable format.", _
                        value.GetType().Name, value)
   Catch e As InvalidCastException
      Console.WriteLine("No conversion to a UInt32 exists for the {0} value {1}.", _
                        value.GetType().Name, value)

   End Try
Next
' The example displays the following output:
'    Converted the Boolean value True to the UInt32 value 1.
'    The Int32 value -12 is outside the range of the UInt32 type.
'    Converted the Int32 value 163 to the UInt32 value 163.
'    Converted the Int32 value 935 to the UInt32 value 935.
'    Converted the Char value x to the UInt32 value 120.
'    No conversion to a UInt32 exists for the DateTime value 5/12/2009 12:00:00 AM.
'    Converted the String value 104 to the UInt32 value 104.
'    The String value 103.0 is not in a recognizable format.
'    The String value -1 is outside the range of the UInt32 type.
'    The String value 1.00e2 is not in a recognizable format.
'    The String value One is not in a recognizable format.
'    Converted the Double value 100 to the UInt32 value 100.
'    The Double value 1.63E+43 is outside the range of the UInt32 type.

Remarques

La valeur de retour est le résultat de l’appel de la IConvertible.ToUInt32 méthode du type sous-jacent de value.

S’applique à

ToUInt32(Byte)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur de l'entier non signé 8 bits spécifié en l'entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(System::Byte value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (byte value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : byte -> uint32

Public Shared Function ToUInt32 (value As Byte) As UInteger

Paramètres

value: Byte

Entier non signé 8 bits à convertir.

Retours

UInt32

Entier non signé 32 bits équivalent à value.

Attributs: CLSCompliantAttribute

Exemples

L’exemple suivant convertit chaque élément d’un tableau d’octets en entier non signé.

byte[] bytes = { Byte.MinValue, 14, 122, Byte.MaxValue};
uint result;

foreach (byte byteValue in bytes)
{
   result = Convert.ToUInt32(byteValue);
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.",
                     byteValue.GetType().Name, byteValue,
                     result.GetType().Name, result);
}
// The example displays the following output:
//    Converted the Byte value 0 to the UInt32 value 0.
//    Converted the Byte value 14 to the UInt32 value 14.
//    Converted the Byte value 122 to the UInt32 value 122.
//    Converted the Byte value 255 to the UInt32 value 255.

let bytes = [| Byte.MinValue; 14uy; 122uy; Byte.MaxValue |]

for byteValue in bytes do
    let result = Convert.ToUInt16 byteValue
    printfn $"Converted the {byteValue.GetType().Name} value '{byteValue}' to the {result.GetType().Name} value {result}."
// The example displays the following output:
//       Converted the Byte value '0' to the UInt32 value 0.
//       Converted the Byte value '14' to the UInt32 value 14.
//       Converted the Byte value '122' to the UInt32 value 122.
//       Converted the Byte value '255' to the UInt32 value 255.

Dim bytes() As Byte = { Byte.MinValue, 14, 122, Byte.MaxValue}
Dim result As UInteger

For Each byteValue As Byte In bytes
   result = Convert.ToUInt32(byteValue)
   Console.WriteLine("Converted the {0} value {1} to the {2} value {3}.", _
                     byteValue.GetType().Name, byteValue, _
                     result.GetType().Name, result)
Next
' The example displays the following output:
'    Converted the Byte value 0 to the UInt32 value 0.
'    Converted the Byte value 14 to the UInt32 value 14.
'    Converted the Byte value 122 to the UInt32 value 122.
'    Converted the Byte value 255 to the UInt32 value 255.

S’applique à

ToUInt32(Boolean)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

Important

Cette API n’est pas conforme CLS.

Convertit la valeur booléenne spécifiée en entier non signé 32 bits équivalent.

public:
 static System::UInt32 ToUInt32(bool value);

[System.CLSCompliant(false)]
public static uint ToUInt32 (bool value);

[<System.CLSCompliant(false)>]
static member ToUInt32 : bool -> uint32

Public Shared Function ToUInt32 (value As Boolean) As UInteger

Paramètres

value: Boolean

Valeur booléenne à convertir.

Retours

UInt32

Chiffre 1, si value est true ; sinon, 0.

Attributs: CLSCompliantAttribute

Exemples

L’exemple suivant convertit les valeurs true booléennes et false en entiers non signés.

bool falseFlag = false;
bool trueFlag = true;

Console.WriteLine("{0} converts to {1}.", falseFlag,
                  Convert.ToUInt32(falseFlag));
Console.WriteLine("{0} converts to {1}.", trueFlag,
                  Convert.ToUInt32(trueFlag));
// The example displays the following output:
//       False converts to 0.
//       True converts to 1.

let falseFlag = false
let trueFlag = true

printfn $"{falseFlag} converts to {Convert.ToInt32 falseFlag}."
printfn $"{trueFlag} converts to {Convert.ToInt32 trueFlag}."
// The example displays the following output:
//       False converts to 0.
//       True converts to 1.

Dim falseFlag As Boolean = False
Dim trueFlag As Boolean = True

Console.WriteLine("{0} converts to {1}.", falseFlag, _
                  Convert.ToUInt32(falseFlag))
Console.WriteLine("{0} converts to {1}.", trueFlag, _
                  Convert.ToUInt32(trueFlag))
' The example displays the following output:
'       False converts to 0.
'       True converts to 1.

S’applique à

Partage via

Convert.ToUInt32 Méthode

Définition

Surcharges

ToUInt32(String)

Paramètres

Retours

Exceptions

Exemples

Remarques

S’applique à

ToUInt32(UInt64)

Paramètres

Retours

Exceptions

Exemples

S’applique à

ToUInt32(UInt16)

Paramètres

Retours

Exemples

S’applique à

ToUInt32(UInt32)

Paramètres

Retours

S’applique à

ToUInt32(DateTime)

Paramètres

Retours

Exceptions

S’applique à

ToUInt32(String, IFormatProvider)

Paramètres

Retours

Exceptions

Exemples

Remarques

S’applique à

ToUInt32(String, Int32)

Paramètres

Retours

Exceptions

Exemples

Remarques

S’applique à

ToUInt32(Single)

Paramètres

Retours

Exceptions

Exemples

Voir aussi

S’applique à

ToUInt32(Object, IFormatProvider)

Paramètres

Retours

Exceptions

Exemples

Remarques

S’applique à

ToUInt32(SByte)

Paramètres

Retours

Exceptions

Exemples

S’applique à

ToUInt32(Char)

Paramètres

Retours

Exemples

S’applique à

ToUInt32(Int64)

Paramètres

Retours

Exceptions

Exemples

S’applique à

ToUInt32(Int32)

Paramètres

Retours

Exceptions