Convert.ToUInt32 Método
Definición
Importante
Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.
Convierte un valor especificado en un entero de 32 bits sin signo.
Sobrecargas
ToUInt32(String) |
Convierte la representación de cadena especificada de un número en un entero de 32 bits sin signo equivalente. |
ToUInt32(UInt64) |
Convierte el valor del entero de 64 bits sin signo especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(UInt16) |
Convierte el valor del entero de 16 bits sin signo especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(UInt32) |
Devuelve el entero de 32 bits sin signo especificado; no se efectúa una conversión real. |
ToUInt32(DateTime) |
Cuando se llama a este método, siempre se produce InvalidCastException. |
ToUInt32(String, IFormatProvider) |
Convierte la representación de cadena especificada de un número en un entero de 32 bits sin signo equivalente, usando la información de formato específica de la referencia cultural indicada. |
ToUInt32(String, Int32) |
Convierte la representación de cadena de un número en una base especificada en un entero de 32 bits sin signo equivalente. |
ToUInt32(Single) |
Convierte el valor del número de punto flotante de precisión sencilla especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(Object, IFormatProvider) |
Convierte el valor del objeto especificado en un entero de 32 bits sin signo, usando la información de formato específica de la referencia cultural indicada. |
ToUInt32(SByte) |
Convierte el valor del entero de 8 bits con signo especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(Char) |
Convierte el valor del carácter Unicode especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(Int64) |
Convierte el valor del entero de 64 bits con signo especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(Int32) |
Convierte el valor del entero de 32 bits con signo especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(Int16) |
Convierte el valor del entero de 16 bits con signo especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(Double) |
Convierte el valor del número de punto flotante de precisión doble especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(Decimal) |
Convierte el valor del número decimal especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(Object) |
Convierte el valor del objeto especificado en un entero de 32 bits sin signo. |
ToUInt32(Byte) |
Convierte el valor del entero de 8 bits sin signo especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(Boolean) |
Convierte el valor booleano especificado en un entero de 32 bits sin signo equivalente. |
ToUInt32(String)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte la representación de cadena especificada de un número en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- String
Cadena que contiene el número que se va a convertir.
Devoluciones
Un entero de 32 bits sin signo equivalente al número de value
, o 0 (cero) si value
es null
.
- Atributos
Excepciones
value
no está formado por un signo opcional seguido de una secuencia de dígitos (de 0 a 9).
value
representa un número menor que UInt32.MinValue o mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se interpretan los elementos de una matriz de cadenas como cadenas numéricas e intenta convertirlos en enteros sin signo.
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.
Comentarios
El uso del ToUInt32(String) método es equivalente a pasar value
al UInt32.Parse(String) método .
value
se interpreta mediante las convenciones de formato de la referencia cultural actual.
Si prefiere no controlar una excepción si se produce un error en la conversión, puede llamar al UInt32.TryParse método en su lugar. Devuelve un Boolean valor que indica si la conversión se realizó correctamente o no.
Se aplica a
ToUInt32(UInt64)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 64 bits sin signo especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- UInt64
Entero de 64 bits sin signo que se va a convertir.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
.
- Atributos
Excepciones
value
es mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de enteros largos sin signo en un valor entero sin signo.
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.
Se aplica a
ToUInt32(UInt16)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 16 bits sin signo especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- UInt16
Entero de 16 bits sin signo que se va a convertir.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
.
- Atributos
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de enteros de 16 bits sin signo en un valor entero sin signo.
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.
Se aplica a
ToUInt32(UInt32)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Devuelve el entero de 32 bits sin signo especificado; no se efectúa una conversión real.
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
Parámetros
- value
- UInt32
Entero de 32 bits sin signo que se va a devolver.
Devoluciones
value
se devuelve sin cambios.
- Atributos
Se aplica a
ToUInt32(DateTime)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Cuando se llama a este método, siempre se produce 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
Parámetros
- value
- DateTime
Valor de fecha y hora que se va a convertir.
Devoluciones
No se admite esta conversión. No se devuelve ningún valor.
- Atributos
Excepciones
No se admite esta conversión.
Se aplica a
ToUInt32(String, IFormatProvider)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte la representación de cadena especificada de un número en un entero de 32 bits sin signo equivalente, usando la información de formato específica de la referencia cultural indicada.
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
Parámetros
- value
- String
Cadena que contiene el número que se va a convertir.
- provider
- IFormatProvider
Objeto que proporciona información de formato específica de la referencia cultural.
Devoluciones
Un entero de 32 bits sin signo equivalente al número de value
, o 0 (cero) si value
es null
.
- Atributos
Excepciones
value
no está formado por un signo opcional seguido de una secuencia de dígitos (de 0 a 9).
value
representa un número menor que UInt32.MinValue o mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se define un objeto personalizado NumberFormatInfo que reconoce la cadena "pos" como el signo positivo y la cadena "neg" como signo negativo. A continuación, intenta convertir cada elemento de una matriz de cadenas numéricas en un entero mediante este proveedor y el NumberFormatInfo proveedor para la referencia cultural invariable.
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
Comentarios
El valor devuelto es el resultado de invocar UInt32.Parse en value
.
provider
es una IFormatProvider instancia de que obtiene un NumberFormatInfo objeto . El NumberFormatInfo objeto proporciona información específica de la referencia cultural sobre el formato de value
. Si provider
es null
, se usa para NumberFormatInfo la referencia cultural actual.
Si prefiere no controlar una excepción si se produce un error en la conversión, puede llamar al UInt32.TryParse método en su lugar. Devuelve un Boolean valor que indica si la conversión se realizó correctamente o no.
Se aplica a
ToUInt32(String, Int32)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte la representación de cadena de un número en una base especificada en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- String
Cadena que contiene el número que se va a convertir.
- fromBase
- Int32
Base del número de value
, que debe ser 2, 8, 10 o 16.
Devoluciones
Un entero de 32 bits sin signo equivalente al número de value
, o 0 (cero) si value
es null
.
- Atributos
Excepciones
fromBase
no es 2, 8, 10 o 16.
O bien
value
, que representa un número sin signo que no sea de base 10, tiene un signo negativo como prefijo.
value
es Empty.
value
contiene un carácter que no es un dígito válido en la base especificada por fromBase
. El mensaje de excepción indica que no hay dígitos para convertir si el primer carácter de value
no es válido; en caso contrario, el mensaje indica que value
contiene caracteres finales no válidos.
value
, que representa un número sin signo que no sea de base 10, tiene un signo negativo como prefijo.
O bien
value
representa un número menor que UInt32.MinValue o mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se intenta interpretar cada elemento de una matriz de cadenas numéricas como un valor hexadecimal y convertirlo en un entero sin signo.
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
Comentarios
Si fromBase
es 16, puede prefijar el número especificado por el value
parámetro con "0x" o "0X".
Dado que el UInt32 tipo de datos solo admite valores sin signo, el ToUInt32(String, Int32) método supone que value
se expresa mediante la representación binaria sin signo. En otras palabras, los 32 bits se usan para representar el valor numérico y un bit de signo está ausente. Como resultado, es posible escribir código en el que un valor entero con signo que está fuera del intervalo del tipo de UInt32 datos se convierte en un UInt32 valor sin que el método produzca una excepción. En el ejemplo siguiente se convierte MinValue en su representación de cadena hexadecimal y, a continuación, se llama al ToUInt32(String, Int32) método . En lugar de producir una excepción, el método muestra el mensaje "0x80000000 convierte 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
Al realizar operaciones binarias o conversiones numéricas, siempre es responsabilidad del desarrollador comprobar que un método o operador usa la representación numérica adecuada para interpretar un valor determinado. En el ejemplo siguiente se muestra una técnica para asegurarse de que el método no usa de forma inapropiada la representación binaria para interpretar un valor que usa la representación complementaria de dos al convertir una cadena hexadecimal en un UInt32 valor. En el ejemplo se determina si un valor representa un entero con signo o sin signo mientras convierte ese valor en su representación de cadena. Cuando el ejemplo convierte el valor en un UInt32 valor, comprueba si el valor original era un entero con signo. Si es así, y si se establece su bit de orden superior (lo que indica que el valor original era negativo), el método produce una excepción.
// 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.
Se aplica a
ToUInt32(Single)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del número de punto flotante de precisión sencilla especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- Single
Número de punto flotante de precisión sencilla que se va a convertir.
Devoluciones
value
, redondeado al entero de 32 bits sin signo más próximo. Si value
está en medio de dos números enteros, se devuelve el número par, es decir, 4,5 se convierte en 4 y 5,5 se convierte en 6.
- Atributos
Excepciones
value
es menor que cero o mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de Single valores en un entero sin signo.
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.
Consulte también
Se aplica a
ToUInt32(Object, IFormatProvider)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del objeto especificado en un entero de 32 bits sin signo, usando la información de formato específica de la referencia cultural indicada.
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
Parámetros
- value
- Object
Objeto que implementa la interfaz IConvertible.
- provider
- IFormatProvider
Objeto que proporciona información de formato específica de la referencia cultural.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
, o cero si value
es null
.
- Atributos
Excepciones
value
no tiene un formato adecuado.
value
representa un número menor que UInt32.MinValue o mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se define una HexString
clase que implementa la IConvertible interfaz y que está diseñada para contener la representación de cadena de valores sin signo de 32 bits y de 32 bits sin signo. La clase incluye una Sign
propiedad que indica el signo de su valor hexadecimal.
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
En el ejemplo siguiente se muestra que una llamada al ToUInt32(Object, IFormatProvider) método que pasa un HexString
objeto como parámetro, a su vez, llama a la IConvertible.ToUInt32 implementación de la HexString
clase .
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.
Comentarios
El valor devuelto es el resultado de invocar el IConvertible.ToUInt32 método del tipo subyacente de value
.
provider
permite al usuario especificar información de conversión específica de la referencia cultural sobre el contenido de value
. Por ejemplo, si value
es un String que representa un número, provider
podría proporcionar información específica de la referencia cultural sobre la notación utilizada para representar ese número.
Los tipos base omiten provider
; sin embargo, el parámetro se puede usar si value
es un tipo definido por el usuario que implementa la IConvertible interfaz .
Se aplica a
ToUInt32(SByte)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 8 bits con signo especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- SByte
Entero de 8 bits con signo que se va a convertir.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
.
- Atributos
Excepciones
value
es menor que cero.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de bytes con signo en un entero sin signo.
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.
Se aplica a
ToUInt32(Char)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del carácter Unicode especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- Char
Carácter Unicode que se va a convertir.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
.
- Atributos
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de caracteres en un entero sin signo.
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.
Se aplica a
ToUInt32(Int64)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 64 bits con signo especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- Int64
Entero de 64 bits con signo que se va a convertir.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
.
- Atributos
Excepciones
value
es menor que cero o mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de enteros largos en un entero sin signo.
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.
Se aplica a
ToUInt32(Int32)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 32 bits con signo especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- Int32
Entero de 32 bits con signo que se va a convertir.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
.
- Atributos
Excepciones
value
es menor que cero.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de enteros en un entero sin signo.
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.
Se aplica a
ToUInt32(Int16)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 16 bits con signo especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- Int16
Entero de 16 bits con signo que se va a convertir.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
.
- Atributos
Excepciones
value
es menor que cero.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de enteros de 16 bits en un entero sin signo.
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.
Se aplica a
ToUInt32(Double)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del número de punto flotante de precisión doble especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- Double
Número de punto flotante de precisión doble que se va a convertir.
Devoluciones
value
, redondeado al entero de 32 bits sin signo más próximo. Si value
está en medio de dos números enteros, se devuelve el número par, es decir, 4,5 se convierte en 4 y 5,5 se convierte en 6.
- Atributos
Excepciones
value
es menor que cero o mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de Double valores en un entero sin signo.
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.
Consulte también
Se aplica a
ToUInt32(Decimal)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del número decimal especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- Decimal
Número decimal que se va a convertir.
Devoluciones
value
, redondeado al entero de 32 bits sin signo más próximo. Si value
está en medio de dos números enteros, se devuelve el número par, es decir, 4,5 se convierte en 4 y 5,5 se convierte en 6.
- Atributos
Excepciones
value
es menor que cero o mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de Decimal valores en un entero sin signo.
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.
Consulte también
Se aplica a
ToUInt32(Object)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del objeto especificado en un entero de 32 bits sin signo.
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
Parámetros
- value
- Object
Objeto que implementa la interfaz IConvertible o null
.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
, o 0 (cero) si value
es null
.
- Atributos
Excepciones
value
no tiene un formato adecuado.
value
representa un número menor que UInt32.MinValue o mayor que UInt32.MaxValue.
Ejemplos
En el ejemplo siguiente se intenta convertir cada elemento de una matriz de objetos en un entero sin signo.
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.
Comentarios
El valor devuelto es el resultado de invocar el IConvertible.ToUInt32 método del tipo subyacente de value
.
Se aplica a
ToUInt32(Byte)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor del entero de 8 bits sin signo especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- Byte
Entero de 8 bits sin signo que se va a convertir.
Devoluciones
Un entero de 32 bits sin signo equivalente a value
.
- Atributos
Ejemplos
En el ejemplo siguiente se convierte cada elemento de una matriz de bytes en un entero sin signo.
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.
Se aplica a
ToUInt32(Boolean)
- Source:
- Convert.cs
- Source:
- Convert.cs
- Source:
- Convert.cs
Importante
Esta API no es conforme a CLS.
Convierte el valor booleano especificado en un entero de 32 bits sin signo equivalente.
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
Parámetros
- value
- Boolean
Valor booleano que se va a convertir.
Devoluciones
Número 1 si value
es true
; en caso contrario, 0.
- Atributos
Ejemplos
En el ejemplo siguiente se convierten los valores true
booleanos y false
en enteros sin signo.
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.