Convert.ToUInt64 メソッド

リファレンス

定義

名前空間:: System

アセンブリ:: System.Runtime.Extensions.dll

アセンブリ:: System.Runtime.dll

アセンブリ:: mscorlib.dll

アセンブリ:: netstandard.dll

重要

一部の情報は、リリース前に大きく変更される可能性があるプレリリースされた製品に関するものです。 Microsoft は、ここに記載されている情報について、明示または黙示を問わず、一切保証しません。

指定した値を 64 ビット符号なし整数に変換します。

オーバーロード

ToUInt64(String)	指定した数値の文字列形式を等価の 64 ビット符号なし整数に変換します。
ToUInt64(UInt16)	指定した 16 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(UInt32)	指定した 32 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(String, IFormatProvider)	指定したカルチャに固有の書式情報を使用して、指定した数値の文字列形式を等価の 64 ビット符号なし整数に変換します。
ToUInt64(Object, IFormatProvider)	指定したカルチャに固有の書式情報を使用して、指定したオブジェクトの値を 64 ビット符号なし整数に変換します。
ToUInt64(Single)	指定した単精度浮動小数点数値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(String, Int32)	指定した基数での数値の文字列形式を、等価の 64 ビット符号なし整数に変換します。
ToUInt64(UInt64)	指定した 64 ビット符号なし整数が返されます。実際の変換は行われません。
ToUInt64(SByte)	指定した 8 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(Int16)	指定した 16 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(Int64)	指定した 64 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(Int32)	指定した 32 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(Double)	指定した倍精度浮動小数点数値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(Decimal)	指定した 10 進数値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(DateTime)	このメソッドを呼び出すと、必ず InvalidCastException がスローされます。
ToUInt64(Char)	指定した Unicode 文字の値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(Byte)	指定した 8 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(Boolean)	指定したブール値を等価の 64 ビット符号なし整数に変換します。
ToUInt64(Object)	指定したオブジェクトの値を 64 ビット符号なし整数に変換します。

ToUInt64(String)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した数値の文字列形式を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::String ^ value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (string value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (string? value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : string -> uint64

Public Shared Function ToUInt64 (value As String) As ULong

パラメーター

value: String

変換する数値を含んだ文字列。

戻り値

UInt64

value の数値と等価の 64 ビット符号付き整数。value が null の場合は 0 (ゼロ)。

属性: CLSCompliantAttribute

例外

FormatException

value は、オプションの符号とそれに続く数字 (0 ～ 9) のシーケンスで構成されていません。

OverflowException

value は、 UInt64.MinValue より小さいか、 UInt64.MaxValue より大きい数値を表します。

例

次の例では、文字列配列の要素を数値文字列として解釈し、符号なし長整数への変換を試みます。

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

foreach (string value in values)
{
   try {
      result = Convert.ToUInt64(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("{0} is outside the range of the UInt64 type.", 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.
//    -18 is outside the range of the UInt64 type.
//    The String value '-6.00' is not in a recognizable format.
//    Converted the String value ' 0' to the UInt64 value 0.
//    Converted the String value '137' to the UInt64 value 137.
//    The String value '1601.9' is not in a recognizable format.
//    Converted the String value '2147483647' to the UInt64 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 UInt64 type." 
// The example displays the following output:
//    Converted the String value '1603' to the UInt64 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 UInt64 type.
//    1074122 is outside the range of the UInt64 type.

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

For Each value As String In values
   Try
      result = Convert.ToUInt64(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 UInt64 type.", 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.
'    -18 is outside the range of the UInt64 type.
'    The String value '-6.00' is not in a recognizable format.
'    Converted the String value ' 0' to the UInt64 value 0.
'    Converted the String value '137' to the UInt64 value 137.
'    The String value '1601.9' is not in a recognizable format.
'    Converted the String value '2147483647' to the UInt64 value 2147483647.

注釈

メソッドの ToInt64(String) 使用は、メソッドへの渡し value と Int64.Parse(String) 同じです。 value は、現在のカルチャの書式設定規則を使用して解釈されます。

変換が失敗した場合に例外を処理しない場合は、代わりにメソッドを UInt64.TryParse 呼び出すことができます。変換が Boolean 成功したか失敗したかを示す値を返します。

適用対象

ToUInt64(UInt16)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した 16 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::UInt16 value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (ushort value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : uint16 -> uint64

Public Shared Function ToUInt64 (value As UShort) As ULong

パラメーター

value: UInt16

変換する 16 ビット符号なし整数。

戻り値

UInt64

value と等価の 64 ビット符号なし整数。

属性: CLSCompliantAttribute

例

次の例では、符号なし 16 ビット整数の配列内の各要素を符号なし長整数に変換します。

ushort[] numbers = { UInt16.MinValue, 121, 340, UInt16.MaxValue };
ulong result;

foreach (ushort number in numbers)
{
   try {
      result = Convert.ToUInt64(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 UInt64 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    Converted the UInt16 value 0 to the UInt64 value 0.
//    Converted the UInt16 value 121 to the UInt64 value 121.
//    Converted the UInt16 value 340 to the UInt64 value 340.
//    Converted the UInt16 value 65535 to the UInt64 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 UInt64 type."
                        
// The example displays the following output:
//    Converted the UInt16 value '0' to the UInt64 value 0.
//    Converted the UInt16 value '121' to the UInt64 value 121.
//    Converted the UInt16 value '340' to the UInt64 value 340.
//    The UInt16 value 65535 is outside the range of the UInt64 type.

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

For Each number As UShort In numbers
   result = Convert.ToUInt64(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 UInt64 value 0.
'    Converted the UInt16 value 121 to the UInt64 value 121.
'    Converted the UInt16 value 340 to the UInt64 value 340.
'    Converted the UInt16 value 65535 to the UInt64 value 65535.

適用対象

ToUInt64(UInt32)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した 32 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::UInt32 value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (uint value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : uint32 -> uint64

Public Shared Function ToUInt64 (value As UInteger) As ULong

パラメーター

value: UInt32

変換する 32 ビット符号なし整数。

戻り値

UInt64

value と等価の 64 ビット符号なし整数。

属性: CLSCompliantAttribute

例

次の例では、符号なし整数配列内の各要素を符号なし長整数に変換します。

uint[] numbers = { UInt32.MinValue, 121, 340, UInt32.MaxValue };
ulong result;

foreach (uint number in numbers)
{
   try {
      result = Convert.ToUInt64(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 UInt64 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    Converted the UInt32 value 0 to the UInt64 value 0.
//    Converted the UInt32 value 121 to the UInt64 value 121.
//    Converted the UInt32 value 340 to the UInt64 value 340.
//    Converted the UInt32 value 4294967295 to the UInt64 value 4294967295.

let numbers = [| UInt32.MinValue; 121u; 340u; UInt32.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 UInt64 type."
// The example displays the following output:
//    Converted the UInt32 value '0' to the UInt64 value 0.
//    Converted the UInt64 value '121' to the UInt64 value 121.
//    Converted the UInt64 value '340' to the UInt64 value 340.
//    The UInt32 value 4294967295 is outside the range of the UInt64 type.

Dim numbers() As UInteger = { UInt32.MinValue, 121, 340, UInt32.MaxValue }
Dim result As ULong

For Each number As UInteger In numbers
   result = Convert.ToUInt64(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 UInt32 value 0 to the UInt64 value 0.
'    Converted the UInt32 value 121 to the UInt64 value 121.
'    Converted the UInt32 value 340 to the UInt64 value 340.
'    Converted the UInt32 value 4294967295 to the UInt64 value 4294967295.

適用対象

ToUInt64(String, IFormatProvider)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定したカルチャに固有の書式情報を使用して、指定した数値の文字列形式を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::String ^ value, IFormatProvider ^ provider);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (string value, IFormatProvider provider);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (string? value, IFormatProvider? provider);

[<System.CLSCompliant(false)>]
static member ToUInt64 : string * IFormatProvider -> uint64

Public Shared Function ToUInt64 (value As String, provider As IFormatProvider) As ULong

パラメーター

value: String

変換する数値を含んだ文字列。

provider: IFormatProvider

カルチャ固有の書式情報を提供するオブジェクト。

戻り値

UInt64

value の数値と等価の 64 ビット符号なし整数。value が null の場合は 0 (ゼロ)。

属性: CLSCompliantAttribute

例外

FormatException

value は、オプションの符号とそれに続く数字 (0 ～ 9) のシーケンスで構成されていません。

OverflowException

value は、 UInt64.MinValue より小さいか、 UInt64.MaxValue より大きい数値を表します。

例

次の例では、文字列 "pos" を正の符号として認識し、文字列 "neg" を負の符号として認識するカスタム NumberFormatInfo オブジェクトを定義します。次に、数値文字列配列の各要素を符号なし長整数に変換しようとします。変換では、インバリアントカルチャに対して NumberFormatInfo カスタムプロバイダーとプロバイダーの両方が使用されます。

using System;
using System.Globalization;

public class Example
{
   public static void Main()
   {
      // Create a NumberFormatInfo object and set several properties.
      NumberFormatInfo provider = new NumberFormatInfo();
      provider.PositiveSign = "pos ";
      provider.NegativeSign = "neg ";

      // Define an array of numeric strings.
      string[] values = { "123456789012", "+123456789012",
                          "pos 123456789012", "123456789012.",
                          "123,456,789,012", "18446744073709551615",
                          "18446744073709551616", "neg 1", "-1" };
      //  Convert the strings using the format provider.
      foreach (string value in values)
      {
         Console.Write("{0,-20}  -->  ", value);
         try {
            Console.WriteLine("{0,20}", Convert.ToUInt64(value, provider));
         }
         catch (FormatException) {
            Console.WriteLine("{0,20}", "Invalid Format");
         }
         catch (OverflowException) {
            Console.WriteLine("{0,20}", "Numeric Overflow");
         }
      }
   }
}
// The example displays the following output:
//    123456789012          -->          123456789012
//    +123456789012         -->        Invalid Format
//    pos 123456789012      -->          123456789012
//    123456789012.         -->        Invalid Format
//    123,456,789,012       -->        Invalid Format
//    18446744073709551615  -->  18446744073709551615
//    18446744073709551616  -->      Numeric Overflow
//    neg 1                 -->      Numeric Overflow
//    -1                    -->        Invalid Format

open System
open System.Globalization

// Create a NumberFormatInfo object and set several properties.
let provider = NumberFormatInfo()
provider.PositiveSign <- "pos "
provider.NegativeSign <- "neg "

// Define an array of numeric strings.
let values =
    [| "123456789012"; "+123456789012"
       "pos 123456789012"; "123456789012."
       "123,456,789,012"; "18446744073709551615"
       "18446744073709551616"; "neg 1"; "-1" |]

// Convert the strings using the format provider.
for value in values do
    printf $"{value,-20}  -->  "
    try
        printfn $"{Convert.ToUInt64(value, provider),20}"
    with
    | :? FormatException ->
        printfn "%20s" "Invalid Format"
    | :? OverflowException ->
        printfn "%20s" "Numeric Overflow"
// The example displays the following output:
//    123456789012          -->          123456789012
//    +123456789012         -->        Invalid Format
//    pos 123456789012      -->          123456789012
//    123456789012.         -->        Invalid Format
//    123,456,789,012       -->        Invalid Format
//    18446744073709551615  -->  18446744073709551615
//    18446744073709551616  -->      Numeric Overflow
//    neg 1                 -->      Numeric Overflow
//    -1                    -->        Invalid Format

Imports System.Globalization

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

      ' Define an array of numeric strings.
      Dim values() As String = { "123456789012", "+123456789012", _
                                 "pos 123456789012", "123456789012.", _
                                 "123,456,789,012", "18446744073709551615", _
                                 "18446744073709551616", "neg 1", "-1" }
      '  Convert the strings using the format provider.
      For Each value As String In values
         Console.Write("{0,-20}  -->  ", value)
         Try
            Console.WriteLine("{0,20}", Convert.ToUInt64(value, provider))
         Catch e As FormatException
            Console.WriteLine("{0,20}", "Invalid Format")
         Catch e As OverflowException
            Console.WriteLine("{0,20}", "Numeric Overflow")
         End Try               
      Next
    End Sub 
End Module 
' The example displays the following output:
'    123456789012          -->          123456789012
'    +123456789012         -->        Invalid Format
'    pos 123456789012      -->          123456789012
'    123456789012.         -->        Invalid Format
'    123,456,789,012       -->        Invalid Format
'    18446744073709551615  -->  18446744073709551615
'    18446744073709551616  -->      Numeric Overflow
'    neg 1                 -->      Numeric Overflow
'    -1                    -->        Invalid Format

注釈

戻り値は、でを呼び出した UInt64.Parse 結果です value。

provider は、 IFormatProvider オブジェクトを取得する実装です NumberFormatInfo 。オブジェクトは NumberFormatInfo 、の形式に関するカルチャ固有の value情報を提供します。が nullの場合providerは、現在のNumberFormatInfoカルチャのオブジェクトが使用されます。

適用対象

ToUInt64(Object, IFormatProvider)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定したカルチャに固有の書式情報を使用して、指定したオブジェクトの値を 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::Object ^ value, IFormatProvider ^ provider);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (object value, IFormatProvider provider);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (object? value, IFormatProvider? provider);

[<System.CLSCompliant(false)>]
static member ToUInt64 : obj * IFormatProvider -> uint64

Public Shared Function ToUInt64 (value As Object, provider As IFormatProvider) As ULong

パラメーター

value: Object

IConvertible インターフェイスを実装するオブジェクト。

provider: IFormatProvider

カルチャ固有の書式情報を提供するオブジェクト。

戻り値

UInt64

value と等価の 64 ビット符号なし整数。value が null の場合は 0。

属性: CLSCompliantAttribute

例外

FormatException

value が適切な形式ではありません。

InvalidCastException

value が IConvertible インターフェイスを実装していません。

または

この変換はサポートされていません。

OverflowException

value は、 UInt64.MinValue より小さいか、 UInt64.MaxValue より大きい数値を表します。

例

次の例では、インターフェイスを HexString 実装 IConvertible し、64 ビット符号付き値と 64 ビット符号なし値の両方の文字列表現を保持するように設計されたクラスを定義します。クラスには、 Sign その 16 進値の符号を示すプロパティが含まれています。

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 > 16)
            throw new ArgumentException("The hexadecimal representation of a 64-bit integer cannot have more than 16 characters.");
         else if (! Regex.IsMatch(value, "([0-9,A-F]){1,8}", RegexOptions.IgnoreCase))
            throw new ArgumentException("The hexadecimal representation of a 64-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.ToInt64(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.ToUInt64(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.ToInt64(hexString, 16)));

      try {
         ushort codePoint = UInt16.Parse(this.hexString, NumberStyles.HexNumber);
         return Convert.ToChar(codePoint);
      }
      catch (OverflowException) {
         throw new OverflowException(String.Format("{0} is out of range of the Char type.", Convert.ToUInt64(hexString, 16)));
      }
   }

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

   public decimal ToDecimal(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
      {
         long hexValue = Int64.Parse(hexString, NumberStyles.HexNumber);
         return Convert.ToDecimal(hexValue);
      }
      else
      {
         ulong hexValue = UInt64.Parse(hexString, NumberStyles.HexNumber);
         return Convert.ToDecimal(hexValue);
      }
   }

   public double ToDouble(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToDouble(Int64.Parse(hexString, NumberStyles.HexNumber));
      else
         return Convert.ToDouble(UInt64.Parse(hexString, NumberStyles.HexNumber));
   }

   public short ToInt16(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToInt16(Int64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToInt64(hexString, 16)), e);
         }
      else
         try {
            return Convert.ToInt16(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToUInt64(hexString, 16)), e);
         }
   }

   public int ToInt32(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToInt32(Int64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt64(hexString, 16)), e);
         }
      else
         try {
            return Convert.ToInt32(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt64(hexString, 16)), e);
         }
   }

   public long ToInt64(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Int64.Parse(hexString, NumberStyles.HexNumber);
      else
         try {
            return Convert.ToInt64(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the Int64 type.", Convert.ToUInt64(hexString, 16)), e);
         }
   }

   public sbyte ToSByte(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         try {
            return Convert.ToSByte(Int64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is outside the range of the SByte type.",
                                                      Int64.Parse(hexString, NumberStyles.HexNumber), e));
         }
      else
         try {
            return Convert.ToSByte(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is outside the range of the SByte type.",
                                                    UInt64.Parse(hexString, NumberStyles.HexNumber)), e);
         }
   }

   public float ToSingle(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         return Convert.ToSingle(Int64.Parse(hexString, NumberStyles.HexNumber));
      else
         return Convert.ToSingle(UInt64.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.",
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)));
      else
         try {
            return Convert.ToUInt16(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException e) {
            throw new OverflowException(String.Format("{0} is out of range of the UInt16 type.", Convert.ToUInt64(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.",
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)));
      else
         try {
            return Convert.ToUInt32(UInt64.Parse(hexString, NumberStyles.HexNumber));
         }
         catch (OverflowException) {
            throw new OverflowException(String.Format("{0} is outside the range of the UInt32 type.",
                                                      UInt64.Parse(hexString, NumberStyles.HexNumber)));
         }
   }

   public ulong ToUInt64(IFormatProvider provider)
   {
      if (signBit == SignBit.Negative)
         throw new OverflowException(String.Format("{0} is outside the range of the UInt64 type.",
                                                   Int64.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 > 16 then
                invalidArg "value" "The hexadecimal representation of a 64-bit integer cannot have more than 16 characters."
            elif Regex.IsMatch(value, "([0-9,A-F]){1,8}", RegexOptions.IgnoreCase) |> not then
                invalidArg "value" "The hexadecimal representation of a 64-bit integer contains invalid characters."
            else
                this.hexString <- value

    // IConvertible implementations.
    interface IConvertible with
        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 $"{Convert.ToInt64(this.hexString, 16)} is out of range of the Byte type.")
            try
                Byte.Parse(this.hexString, NumberStyles.HexNumber)
            with :? OverflowException as e ->
                raise (OverflowException($"{Convert.ToUInt64(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.ToInt64(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 ->
                raise (OverflowException $"{Convert.ToUInt64(this.hexString, 16)} is out of range of the Char type.")

        member this.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 = Int64.Parse(this.hexString, NumberStyles.HexNumber)
                Convert.ToDecimal hexValue
            else
                let hexValue = UInt64.Parse(this.hexString, NumberStyles.HexNumber)
                Convert.ToDecimal hexValue

        member this.ToDouble(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                Convert.ToDouble(Int64.Parse(this.hexString, NumberStyles.HexNumber))
            else
                Convert.ToDouble(UInt64.Parse(this.hexString, NumberStyles.HexNumber))

        member this.ToInt16(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                try
                    Convert.ToInt16(Int64.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToInt64(this.hexString, 16)} is out of range of the Int16 type.", e) )
            else
                try
                    Convert.ToInt16(UInt64.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToUInt64(this.hexString, 16)} is out of range of the Int16 type.", e) )

        member this.ToInt32(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                try
                    Convert.ToInt32(Int64.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToUInt64(this.hexString, 16)} is out of range of the Int32 type.", e) )
            else
                try
                    Convert.ToInt32(UInt64.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToUInt64(this.hexString, 16)} is out of range of the Int32 type.", e) )

        member this.ToInt64(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                Int64.Parse(this.hexString, NumberStyles.HexNumber)
            else
                try
                    Convert.ToInt64(UInt64.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToUInt64(this.hexString, 16)} is out of range of the Int64 type.", e) )

        member this.ToSByte(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                try
                    Convert.ToSByte(Int64.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Int64.Parse(this.hexString, NumberStyles.HexNumber)} is outside the range of the SByte type.", e) )
            else
                try
                    Convert.ToSByte(UInt64.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{UInt64.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(Int64.Parse(this.hexString, NumberStyles.HexNumber))
            else
                Convert.ToSingle(UInt64.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 $"{Int64.Parse(this.hexString, NumberStyles.HexNumber)} is outside the range of the UInt16 type.")
            else
                try
                    Convert.ToUInt16(UInt64.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException as e ->
                    raise (OverflowException($"{Convert.ToUInt64(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 $"{Int64.Parse(this.hexString, NumberStyles.HexNumber)} is outside the range of the UInt32 type.")
            else
                try
                    Convert.ToUInt32(UInt64.Parse(this.hexString, NumberStyles.HexNumber))
                with :? OverflowException ->
                    raise (OverflowException $"{UInt64.Parse(this.hexString, NumberStyles.HexNumber)} is outside the range of the UInt32 type.")

        member this.ToUInt64(provider: IFormatProvider) =
            if this.Sign = SignBit.Negative then
                raise (OverflowException $"{Int64.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 > 16 Then
            Throw New ArgumentException("The hexadecimal representation of a 64-bit integer cannot have more than 16 characters.")
         ElseIf Not Regex.IsMatch(value, "([0-9,A-F]){1,8}", RegexOptions.IgnoreCase) Then
            Throw New ArgumentException("The hexadecimal representation of a 64-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.ToInt64(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.ToUInt64(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.ToInt64(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.ToUInt64(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 Long = Int64.Parse(hexString, NumberStyles.HexNumber)
         Return Convert.ToDecimal(hexValue)
      Else
         Dim hexValue As ULong = UInt64.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(Int64.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Convert.ToDouble(UInt64.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(Int64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToInt64(hexString, 16)), e)
         End Try
      Else
         Try
            Return Convert.ToInt16(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int16 type.", Convert.ToUInt64(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
         Try
            Return Convert.ToInt32(Int64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt64(hexString, 16)), e)
         End Try
      Else
         Try
            Return Convert.ToInt32(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int32 type.", Convert.ToUInt64(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 Int64.Parse(hexString, NumberStyles.HexNumber)
      Else
         Try
            Return Convert.ToInt64(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the Int64 type.", Convert.ToUInt64(hexString, 16)), e)
         End Try
      End If   
   End Function
   
   Public Function ToSByte(provider As IFormatProvider) As SByte _
                   Implements IConvertible.ToSByte
      If signBit = SignBit.Negative Then
         Try
            Return Convert.ToSByte(Int64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is outside the range of the SByte type.", _
                                                      Int64.Parse(hexString, NumberStyles.HexNumber), e))
         End Try
      Else
         Try
            Return Convert.ToSByte(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is outside the range of the SByte type.", _
                                                    UInt64.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(Int64.Parse(hexString, NumberStyles.HexNumber))
      Else
         Return Convert.ToSingle(UInt64.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.", _
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Try
            Return Convert.ToUInt16(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
            Throw New OverflowException(String.Format("{0} is out of range of the UInt16 type.", Convert.ToUInt64(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.", _
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Try
            Return Convert.ToUInt32(UInt64.Parse(hexString, NumberStyles.HexNumber))
         Catch e As OverflowException
         Throw New OverflowException(String.Format("{0} is outside the range of the UInt32 type.", _
                                                   UInt64.Parse(hexString, NumberStyles.HexNumber)))
         End Try   
      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.", _
                                                   Int64.Parse(hexString, NumberStyles.HexNumber)))
      Else
         Return Convert.ToUInt64(hexString, 16)
      End If   
   End Function
End Structure

次の例は、オブジェクトをパラメーターとして渡HexStringすメソッドのToUInt64(Object, IFormatProvider)呼び出しによって、クラスのHexString実装がIConvertible.ToUInt64呼び出されることを示しています。

public class Example
{
   public static void Main()
   {
      ulong positiveValue = UInt64.MaxValue - 100000;
      long negativeValue = -1;

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

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

      try {
         Console.WriteLine("0x{0} converts to {1}.", positiveString.Value, Convert.ToUInt64(positiveString));
      }
      catch (OverflowException) {
         Console.WriteLine("{0} is outside the range of the UInt64 type.",
                           Int64.Parse(positiveString.Value, NumberStyles.HexNumber));
      }

      try {
         Console.WriteLine("0x{0} converts to {1}.", negativeString.Value, Convert.ToUInt64(negativeString));
      }
      catch (OverflowException) {
         Console.WriteLine("{0} is outside the range of the UInt64 type.",
                           Int64.Parse(negativeString.Value, NumberStyles.HexNumber));
      }
   }
}
// The example displays the following output:
//       0xFFFFFFFFFFFE795F converts to 18446744073709451615.
//       -1 is outside the range of the UInt64 type.

let positiveValue = UInt64.MaxValue - 100000uL
let negativeValue = -1L

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

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

try
    printfn $"0x{positiveString.Value} converts to {Convert.ToUInt64 positiveString}."
with :? OverflowException ->
    printfn $"{Int64.Parse(positiveString.Value, NumberStyles.HexNumber)} is outside the range of the UInt64 type."

try
    printfn $"0x{negativeString.Value} converts to {Convert.ToUInt64 negativeString}."
with :? OverflowException ->
    printfn $"{Int64.Parse(negativeString.Value, NumberStyles.HexNumber)} is outside the range of the UInt64 type."
// The example displays the following output:
//       0xFFFFFFFFFFFE795F converts to 18446744073709451615.
//       -1 is outside the range of the UInt64 type.

Module Example
   Public Sub Main()
      Dim positiveValue As UInt64 = CULng(UInt64.MaxValue - 100000)
      Dim negativeValue As Int64 = -1
      
      
      Dim positiveString As New HexString()
      positiveString.Sign = CType(Math.Sign(positiveValue), SignBit)
      positiveString.Value = positiveValue.ToString("X")
      
      Dim negativeString As New HexString()
      negativeString.Sign = CType(Math.Sign(negativeValue), SignBit)
      negativeString.Value = negativeValue.ToString("X")
      
      Try
         Console.WriteLine("0x{0} converts to {1}.", positiveString.Value, Convert.ToUInt64(positiveString))
      Catch e As OverflowException
         Console.WriteLine("{0} is outside the range of the UInt64 type.", _
                           Int64.Parse(positiveString.Value, NumberStyles.HexNumber))
      End Try

      Try
         Console.WriteLine("0x{0} converts to {1}.", negativeString.Value, Convert.ToUInt64(negativeString))
      Catch e As OverflowException
         Console.WriteLine("{0} is outside the range of the UInt64 type.", _
                           Int64.Parse(negativeString.Value, NumberStyles.HexNumber))
      End Try   
   End Sub
End Module
' The example dosplays the following output:
'       0xFFFFFFFFFFFE795F converts to 18446744073709451615.
'       -1 is outside the range of the UInt64 type.

注釈

戻り値は、の基になる型valueの IConvertible.ToUInt64 メソッドを呼び出した結果です。

provider を使用すると、ユーザーはのコンテンツに関するカルチャ固有の value変換情報を指定できます。たとえば、が数値をString表すの場合valueは、providerその数値を表すために使用される表記に関するカルチャ固有の情報を提供できます。

基本型は無視 providerします。ただし、がインターフェイスを実装するユーザー定義型の場合 value は、パラメーターを IConvertible 使用できます。

適用対象

ToUInt64(Single)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した単精度浮動小数点数値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(float value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (float value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : single -> uint64

Public Shared Function ToUInt64 (value As Single) As ULong

パラメーター

value: Single

変換する単精度浮動小数点数。

戻り値

UInt64

近似値の 64 ビット符号なし整数に丸められた value。 value が 2 つの整数のちょうど中間にある場合は、偶数が返されます。つまり、4.5 は 4 に変換され、5.5 は 6 に変換されます。

属性: CLSCompliantAttribute

例外

OverflowException

value が 0 より小さいか、UInt64.MaxValue より大きい。

例

次の例では、値の配列内の Single 各要素を符号なし長整数に変換しようとします。出力は、変換が実行される前に小数部の値が丸められたことを示しています。

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

foreach (float value in values)
{
   try {
      result = Convert.ToUInt64(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("{0} is outside the range of the UInt64 type.", value);
   }
}
// The example displays the following output:
//    -3.402823E+38 is outside the range of the UInt64 type.
//    -1.38E+10 is outside the range of the UInt64 type.
//    -1023.299 is outside the range of the UInt64 type.
//    -12.98 is outside the range of the UInt64 type.
//    Converted the Single value 0 to the UInt64 value 0.
//    Converted the Single value 9.113E-16 to the UInt64 value 0.
//    Converted the Single value 103.919 to the UInt64 value 104.
//    Converted the Single value 17834.19 to the UInt64 value 17834.
//    3.402823E+38 is outside the range of the UInt64 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 UInt64 type."
// The example displays the following output:
//    -3.402823E+38 is outside the range of the UInt64 type.
//    -1.38E+10 is outside the range of the UInt64 type.
//    -1023.299 is outside the range of the UInt64 type.
//    -12.98 is outside the range of the UInt64 type.
//    Converted the Single value '0' to the UInt64 value 0.
//    Converted the Single value '9.113E-16' to the UInt64 value 0.
//    Converted the Single value '103.919' to the UInt64 value 104.
//    Converted the Single value '17834.19' to the UInt64 value 17834.
//    3.402823E+38 is outside the range of the UInt64 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 ULong
   
   For Each value As Single In values
      Try
         result = Convert.ToUInt64(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 UInt64 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 UInt64 type.
'    The Single value -1.38E+10 is outside the range of the UInt64 type.
'    The Single value -1023.299 is outside the range of the UInt64 type.
'    The Single value -12.98 is outside the range of the UInt64 type.
'    Converted the Single value 0 to the UInt64 value 0.
'    Converted the Single value 9.113E-16 to the UInt64 value 0.
'    Converted the Single value 103.919 to the UInt64 value 104.
'    Converted the Single value 17834.19 to the UInt64 value 17834.
'    The Single value 3.402823E+38 is outside the range of the UInt64 type.

こちらもご覧ください

Single
Round

適用対象

ToUInt64(String, Int32)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した基数での数値の文字列形式を、等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::String ^ value, int fromBase);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (string value, int fromBase);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (string? value, int fromBase);

[<System.CLSCompliant(false)>]
static member ToUInt64 : string * int -> uint64

Public Shared Function ToUInt64 (value As String, fromBase As Integer) As ULong

パラメーター

value: String

変換する数値を含んだ文字列。

fromBase: Int32

value 内の数値の基数。これは 2、8、10、または 16 である必要があります。

戻り値

UInt64

value の数値と等価の 64 ビット符号なし整数。value が null の場合は 0 (ゼロ)。

属性: CLSCompliantAttribute

例外

ArgumentException

fromBase が 2、8、10、16 のどれでもありません。

または

valueは 10 進法でない符号なし数値を表しますが、前に負の符号が付いています。

ArgumentOutOfRangeException

value が Emptyです。

FormatException

value に、fromBase で指定された進法では使用できない数字である文字が含まれています。 value 内の最初の文字が正しくない場合は、例外メッセージは、変換する数字がないことを示します。それ以外の場合は、このメッセージは、 value に正しくない末尾文字が含まれていることを示します。

OverflowException

valueは 10 進法でない符号なし数値を表しますが、前に負の符号が付いています。

または

value は、 UInt64.MinValue より小さいか、UInt64.MaxValue より大きい数値を表します。

例

次の例では、数値文字列の配列内の各要素を 16 進数の値として解釈し、それを符号なし長整数に変換しようとします。

using System;

public class Example
{
   public static void Main()
   {
      string[] hexStrings = { "8000000000000000", "0FFFFFFFFFFFFFFF",
                              "F000000000000000", "00A3000000000000",
                              "D", "-13", "9AC61", "GAD",
                              "FFFFFFFFFFFFFFFFF" };

      foreach (string hexString in hexStrings)
      {
         Console.Write("{0,-18}  -->  ", hexString);
         try {
            ulong number = Convert.ToUInt64(hexString, 16);
            Console.WriteLine("{0,26:N0}", number);
         }
         catch (FormatException) {
            Console.WriteLine("{0,26}", "Bad Format");
         }
         catch (OverflowException) {
            Console.WriteLine("{0,26}", "Numeric Overflow");
         }
         catch (ArgumentException) {
            Console.WriteLine("{0,26}", "Invalid in Base 16");
         }
      }
   }
}
// The example displays the following output:
//    8000000000000000    -->   9,223,372,036,854,775,808
//    0FFFFFFFFFFFFFFF    -->   1,152,921,504,606,846,975
//    F000000000000000    -->  17,293,822,569,102,704,640
//    00A3000000000000    -->      45,880,421,203,836,928
//    D                   -->                          13
//    -13                 -->          Invalid in Base 16
//    9AC61               -->                     633,953
//    GAD                 -->                  Bad Format
//    FFFFFFFFFFFFFFFFF   -->            Numeric Overflow

open System

let hexStrings =
    [| "8000000000000000"; "0FFFFFFFFFFFFFFF"
       "F000000000000000"; "00A3000000000000"
       "D"; "-13"; "9AC61"; "GAD"
       "FFFFFFFFFFFFFFFFF" |]

for hexString in hexStrings do
    printf $"{hexString,-18}  -->  "
    try
        let number = Convert.ToUInt64(hexString, 16)
        printfn $"{number,26:N0}"
    with
    | :? FormatException ->
        printfn "%26s" "Bad Format"
    | :? OverflowException ->
        printfn "%26s" "Numeric Overflow"
    | :? ArgumentException ->
        printfn "%26s" "Invalid in Base 16"
// The example displays the following output:
//    8000000000000000    -->   9,223,372,036,854,775,808
//    0FFFFFFFFFFFFFFF    -->   1,152,921,504,606,846,975
//    F000000000000000    -->  17,293,822,569,102,704,640
//    00A3000000000000    -->      45,880,421,203,836,928
//    D                   -->                          13
//    -13                 -->          Invalid in Base 16
//    9AC61               -->                     633,953
//    GAD                 -->                  Bad Format
//    FFFFFFFFFFFFFFFFF   -->            Numeric Overflow

Module Example
   Public Sub Main()
      Dim hexStrings() As String = { "8000000000000000", "0FFFFFFFFFFFFFFF", _
                                     "F000000000000000", "00A3000000000000", _
                                     "D", "-13", "9AC61", "GAD", _
                                     "FFFFFFFFFFFFFFFFF" }
      For Each hexString As String In hexStrings
         Console.Write("{0,-18}  -->  ", hexString)
         Try
            Dim number As ULong = Convert.ToUInt64(hexString, 16)
            Console.WriteLine("{0,26:N0}", number)
         Catch e As FormatException
            Console.WriteLine("{0,26}", "Bad Format")
         Catch e As OverflowException
            Console.WriteLine("{0,26}", "Numeric Overflow")
         Catch e As ArgumentException
            Console.WriteLine("{0,26}", "Invalid in Base 16")
         End Try
      Next                                            
   End Sub
End Module
' The example displays the following output:
'    8000000000000000    -->   9,223,372,036,854,775,808
'    0FFFFFFFFFFFFFFF    -->   1,152,921,504,606,846,975
'    F000000000000000    -->  17,293,822,569,102,704,640
'    00A3000000000000    -->      45,880,421,203,836,928
'    D                   -->                          13
'    -13                 -->          Invalid in Base 16
'    9AC61               -->                     633,953
'    GAD                 -->                  Bad Format
'    FFFFFFFFFFFFFFFFF   -->            Numeric Overflow

注釈

が 16 の場合 fromBase は、パラメーターで指定された数値の前に value "0x" または "0X" を付けることができます。

データ型は UInt64 符号なし値のみをサポートするため、 ToUInt64(String, Int32) メソッドは、が符号なしバイナリ表現を使用して表現されているものと見な value します。つまり、数値を表すために 64 ビットすべてが使用され、符号ビットは存在しません。その結果、データ型の範囲外 UInt64 の符号付き long 整数値が、メソッドが例外をスローせずに値に UInt64 変換されるコードを記述できます。次の例では、16 進数の文字列表現に変換 MinValue し、メソッドを ToUInt64(String, Int32) 呼び出します。メソッドは例外をスローする代わりに、"0x8000000000000000は 9223372036854775808 に変換します" というメッセージを表示します。

// Create a hexadecimal value out of range of the UInt64 type.
string value = Convert.ToString(Int64.MinValue, 16);
// Convert it back to a number.
try
{
   UInt64 number = Convert.ToUInt64(value, 16);
   Console.WriteLine("0x{0} converts to {1}.", value, number);
}
catch (OverflowException)
{
   Console.WriteLine("Unable to convert '0x{0}' to an unsigned long integer.",
                     value);
}

// Create a hexadecimal value out of range of the UInt64 type.
let value = Convert.ToString(Int64.MinValue, 16)
// Convert it back to a number.
try
    let number = Convert.ToUInt64(value, 16)
    printfn $"0x{value} converts to {number}."
with :? OverflowException ->
    printfn $"Unable to convert '0x{value}' to an unsigned long integer."

' Create a hexadecimal value out of range of the UInt64 type.
Dim value As String = Convert.ToString(Long.MinValue, 16)
' Convert it back to a number.
Try
   Dim number As UInt64 = Convert.ToUInt64(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 long integer.", _
                     value)
End Try

二項演算または数値変換を実行する場合、開発者は常に、メソッドまたは演算子が適切な数値表現を使用して特定の値を解釈していることを確認する必要があります。次の例は、16 進数文字列を値に変換するときに 2 つの補数表現を使用する値を解釈するために、メソッドがバイナリ表現を不適切に使用しないようにするための UInt64 1 つの手法を示しています。この例では、その値を文字列表現に変換するときに、値が符号付き整数と符号なし整数のどちらを表すかを決定します。この例では、値を値に UInt64 変換するときに、元の値が符号付き整数であるかどうかを確認します。その場合、およびその上位ビットが設定されている場合 (元の値が負の値であることを示します)、メソッドは例外をスローします。

// Create a negative hexadecimal value out of range of the UInt64 type.
long sourceNumber = Int64.MinValue;
bool isSigned = Math.Sign((long)sourceNumber.GetType().GetField("MinValue").GetValue(null)) == -1;
string value = Convert.ToString(sourceNumber, 16);
UInt64 targetNumber;
try
{
   targetNumber = Convert.ToUInt64(value, 16);
   if (isSigned && ((targetNumber & 0x8000000000000000) != 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 long integer.",
                     value);
}
// Displays the following to the console:
//    Unable to convert '0x8000000000000000' to an unsigned long integer.

// Create a negative hexadecimal value out of range of the UInt64 type.
let sourceNumber = Int64.MinValue
let isSigned = sign (sourceNumber.GetType().GetField("MinValue").GetValue null :?> int64) = -1
let value = Convert.ToString(sourceNumber, 16)
try
    let targetNumber = Convert.ToUInt64(value, 16)
    if isSigned && targetNumber &&& 0x8000000000000000uL <> 0uL then  
        raise (OverflowException())
    else
        printfn $"0x{value} converts to {targetNumber}."
with :? OverflowException ->
    printfn $"Unable to convert '0x{value}' to an unsigned long integer."
// Displays the following to the console:
//    Unable to convert '0x8000000000000000' to an unsigned long integer.

' Create a negative hexadecimal value out of range of the UInt64 type.
Dim sourceNumber As Long = Long.MinValue
Dim isSigned As Boolean = Math.Sign(sourceNumber.MinValue) = -1
Dim value As String = Convert.ToString(sourceNumber, 16)
Dim targetNumber As UInt64
Try
   targetNumber = Convert.ToUInt64(value, 16)
   If isSigned And ((targetNumber And &H8000000000000000ul) <> 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 long integer.", _
                     value)
End Try 
' Displays the following to the console:
'    Unable to convert '0x8000' to an unsigned long integer.

適用対象

ToUInt64(UInt64)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した 64 ビット符号なし整数が返されます。実際の変換は行われません。

public:
 static System::UInt64 ToUInt64(System::UInt64 value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (ulong value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : uint64 -> uint64

Public Shared Function ToUInt64 (value As ULong) As ULong

パラメーター

value: UInt64

返される 64 ビット符号なし整数。

戻り値

UInt64

value は変更されずに返されます。

属性: CLSCompliantAttribute

適用対象

ToUInt64(SByte)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した 8 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::SByte value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (sbyte value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : sbyte -> uint64

Public Shared Function ToUInt64 (value As SByte) As ULong

パラメーター

value: SByte

変換する 8 ビット符号付き整数。

戻り値

UInt64

value と等価の 64 ビット符号なし整数。

属性: CLSCompliantAttribute

例外

OverflowException

value が 0 未満です。

例

次の例では、符号付きバイト配列内の各要素を符号なし long 整数に変換しようとしています。

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

foreach (sbyte number in numbers)
{
   try {
      result = Convert.ToUInt64(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 UInt64 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The SByte value -128 is outside the range of the UInt64 type.
//    The SByte value -1 is outside the range of the UInt64 type.
//    Converted the SByte value 0 to the UInt64 value 0.
//    Converted the SByte value 10 to the UInt64 value 10.
//    Converted the SByte value 127 to the UInt64 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 UInt64 type."
// The example displays the following output:
//    -128 is outside the range of the UInt64 type.
//    -1 is outside the range of the UInt64 type.
//    Converted the SByte value '0' to the UInt64 value 0.
//    Converted the SByte value '10' to the UInt64 value 10.
//    Converted the SByte value '127' to the UInt64 value 127.

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

For Each number As SByte In numbers
   Try
      result = Convert.ToUInt64(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 UInt64 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The SByte value -128 is outside the range of the UInt64 type.
'    The SByte value -1 is outside the range of the UInt64 type.
'    Converted the SByte value 0 to the UInt64 value 0.
'    Converted the SByte value 10 to the UInt64 value 10.
'    Converted the SByte value 127 to the UInt64 value 127.

適用対象

ToUInt64(Int16)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した 16 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(short value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (short value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : int16 -> uint64

Public Shared Function ToUInt64 (value As Short) As ULong

パラメーター

value: Int16

変換する 16 ビット符号付き整数。

戻り値

UInt64

value と等価の 64 ビット符号なし整数。

属性: CLSCompliantAttribute

例外

OverflowException

value が 0 未満です。

例

次の例では、16 ビット整数の配列内の各要素を符号なし long 整数に変換しようとしています。

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

foreach (short number in numbers)
{
   try {
      result = Convert.ToUInt64(number);
      Console.WriteLine("Converted the {0} value {1} to a {2} value {3}.",
                           number.GetType().Name, number,
                           result.GetType().Name, result);
   }
   catch (OverflowException) {
      Console.WriteLine("{0} is outside the range of the UInt64 type.", number);
   }
}
// The example displays the following output:
//    -32768 is outside the range of the UInt64 type.
//    -1 is outside the range of the UInt64 type.
//    Converted the Int16 value 0 to a UInt64 value 0.
//    Converted the Int16 value 121 to a UInt64 value 121.
//    Converted the Int16 value 340 to a UInt64 value 340.
//    Converted the Int16 value 32767 to a UInt64 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 UInt64 type."
// The example displays the following output:
//    The Int16 value -32768 is outside the range of the UInt64 type.
//    The Int16 value -132 is outside the range of the UInt64 type.
//    Converted the Int16 value '0' to the UInt64 value 0.
//    Converted the Int16 value '121' to the UInt64 value 121.
//    Converted the Int16 value '16103' to the UInt64 value 16103.
//    Converted the Int16 value '32767' to the UInt64 value 32767.

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

For Each number As Short In numbers
   Try
      result = Convert.ToUInt64(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 UInt64 type.", _
                        number.GetType().Name, number)
   End Try   
Next
' The example displays the following output:
'    The Int16 value -32768 is outside the range of the UInt64 type.
'    The Int16 value -1 is outside the range of the UInt64 type.
'    Converted the Int16 value 0 to the UInt64 value 0.
'    Converted the Int16 value 121 to the UInt64 value 121.
'    Converted the Int16 value 340 to the UInt64 value 340.
'    Converted the Int16 value 32767 to the UInt64 value 32767.

適用対象

ToUInt64(Int64)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した 64 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(long value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (long value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : int64 -> uint64

Public Shared Function ToUInt64 (value As Long) As ULong

パラメーター

value: Int64

変換する 64 ビット符号付き整数。

戻り値

UInt64

value と等価の 64 ビット符号なし整数。

属性: CLSCompliantAttribute

例外

OverflowException

value が 0 未満です。

例

次の例では、長整数の配列内の各要素を符号なし long 整数に変換しようとしています。

long[] numbers = { Int64.MinValue, -19432, -18, 0, 121, 340, Int64.MaxValue };
ulong result;
foreach (long number in numbers)
{
   try {
      result = Convert.ToUInt64(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 UInt64 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The Int64 value -9223372036854775808 is outside the range of the UInt64 type.
//    The Int64 value -19432 is outside the range of the UInt64 type.
//    The Int64 value -18 is outside the range of the UInt64 type.
//    Converted the Int64 value 0 to the UInt64 value 0.
//    Converted the Int64 value 121 to the UInt64 value 121.
//    Converted the Int64 value 340 to the UInt64 value 340.
//    Converted the Int64 value 9223372036854775807 to a UInt64 value 9223372036854775807.

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 UInt64 type."
// The example displays the following output:
//    The Int64 value -9223372036854775808 is outside the range of the UInt64 type.
//    The Int64 value -1 is outside the range of the UInt64 type.
//    Converted the Int64 value '0' to the UInt64 value 0.
//    Converted the Int64 value '121' to the UInt64 value 121.
//    Converted the Int64 value '340' to the UInt64 value 340.
//    The Int64 value 9223372036854775807 is outside the range of the UInt64 type.

Dim numbers() As Long = { Int64.MinValue, -19432, -18, 0, 121, 340, Int64.MaxValue }
Dim result As ULong

For Each number As Long In numbers
   Try
      result = Convert.ToUInt64(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 UInt64 type.", _
                        number.GetType().Name, number)
   End Try
Next
' The example displays the following output:
'    The Int64 value -9223372036854775808 is outside the range of the UInt64 type.
'    The Int64 value -19432 is outside the range of the UInt64 type.
'    The Int64 value -18 is outside the range of the UInt64 type.
'    Converted the Int64 value 0 to the UInt64 value 0.
'    Converted the Int64 value 121 to the UInt64 value 121.
'    Converted the Int64 value 340 to the UInt64 value 340.
'    Converted the Int64 value 9223372036854775807 to the UInt64 value 9223372036854775807.

適用対象

ToUInt64(Int32)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した 32 ビット符号付き整数の値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(int value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (int value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : int -> uint64

Public Shared Function ToUInt64 (value As Integer) As ULong

パラメーター

value: Int32

変換する 32 ビット符号付き整数。

戻り値

UInt64

value と等価の 64 ビット符号なし整数。

属性: CLSCompliantAttribute

例外

OverflowException

value が 0 未満です。

例

次の例では、整数の配列内の各要素を符号なし long 整数に変換しようとしています。

int[] numbers = { Int32.MinValue, -1, 0, 121, 340, Int32.MaxValue };
ulong result;

foreach (int number in numbers)
{
   try {
      result = Convert.ToUInt64(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 UInt64 type.",
                        number.GetType().Name, number);
   }
}
// The example displays the following output:
//    The Int32 value -2147483648 is outside the range of the UInt64 type.
//    The Int32 value -1 is outside the range of the UInt64 type.
//    Converted the Int32 value 0 to the UInt64 value 0.
//    Converted the Int32 value 121 to the UInt64 value 121.
//    Converted the Int32 value 340 to the UInt64 value 340.
//    Converted the Int32 value 2147483647 to the UInt64 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 UInt64 type."
                        
// The example displays the following output:
//    The Int32 value -2147483648 is outside the range of the UInt64 type.
//    The Int32 value -1 is outside the range of the UInt64 type.
//    Converted the Int32 value '0' to the UInt64 value 0.
//    Converted the Int32 value '121' to the UInt64 value 121.
//    Converted the Int32 value '340' to the UInt64 value 340.
//    The Int32 value 2147483647 is outside the range of the UInt64 type.

Dim numbers() As Integer = { Int32.MinValue, -1, 0, 121, 340, Int32.MaxValue }
Dim result As ULong

For Each number As Integer In numbers
   Try
      result = Convert.ToUInt64(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 UInt64 type.", _
                        number.GetType().Name, number)
   End Try   
Next
' The example displays the following output:
'    The Int32 value -2147483648 is outside the range of the UInt64 type.
'    The Int32 value -1 is outside the range of the UInt64 type.
'    Converted the Int32 value 0 to the UInt64 value 0.
'    Converted the Int32 value 121 to the UInt64 value 121.
'    Converted the Int32 value 340 to the UInt64 value 340.
'    Converted the Int32 value 2147483647 to the UInt64 value 2147483647.

適用対象

ToUInt64(Double)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した倍精度浮動小数点数値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(double value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (double value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : double -> uint64

Public Shared Function ToUInt64 (value As Double) As ULong

パラメーター

value: Double

変換する倍精度浮動小数点数。

戻り値

UInt64

属性: CLSCompliantAttribute

例外

OverflowException

value が 0 より小さいか、UInt64.MaxValue より大きい。

例

次の例では、値の配列内の Double 各要素を符号なし長整数に変換しようとしています。

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

foreach (double value in values)
{
   try {
      result = Convert.ToUInt64(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("{0} is outside the range of the UInt64 type.", value);
   }
}
// The example displays the following output:
//    -1.79769313486232E+308 is outside the range of the UInt64 type.
//    -13800000000 is outside the range of the UInt64 type.
//    -1023.299 is outside the range of the UInt64 type.
//    -12.98 is outside the range of the UInt64 type.
//    Converted the Double value '0' to the UInt64 value 0.
//    Converted the Double value '9.113E-16' to the UInt64 value 0.
//    Converted the Double value '103.919' to the UInt64 value 104.
//    Converted the Double value '17834.191' to the UInt64 value 17834.
//    1.79769313486232E+308 is outside the range of the UInt64 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 UInt64 type."
// The example displays the following output:
//    -1.79769313486232E+308 is outside the range of the UInt64 type.
//    -13800000000 is outside the range of the UInt64 type.
//    -1023.299 is outside the range of the UInt64 type.
//    -12.98 is outside the range of the UInt64 type.
//    Converted the Double value '0' to the UInt64 value 0.
//    Converted the Double value '9.113E-16' to the UInt64 value 0.
//    Converted the Double value '103.919' to the UInt64 value 104.
//    Converted the Double value '17834.191' to the UInt64 value 17834.
//    1.79769313486232E+308 is outside the range of the UInt64 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 ULong

For Each value As Double In values
   Try
      result = Convert.ToUInt64(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 UInt64 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 UInt64 type.
'    The Double value -13800000000 is outside the range of the UInt64 type.
'    The Double value -1023.299 is outside the range of the UInt64 type.
'    The Double value -12.98 is outside the range of the UInt64 type.
'    Converted the Double value '0' to the UInt64 value 0.
'    Converted the Double value '9.113E-16' to the UInt64 value 0.
'    Converted the Double value '103.919' to the UInt64 value 104.
'    Converted the Double value '17834.191' to the UInt64 value 17834.
'    The Double value 1.79769313486232E+308 is outside the range of the UInt64 type.

こちらもご覧ください

Double
Round

適用対象

ToUInt64(Decimal)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した 10 進数値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::Decimal value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (decimal value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : decimal -> uint64

Public Shared Function ToUInt64 (value As Decimal) As ULong

パラメーター

value: Decimal

変換する 10 進数。

戻り値

UInt64

属性: CLSCompliantAttribute

例外

OverflowException

value が 0 より小さいか、UInt64.MaxValue より大きい。

例

次の例では、値の配列内の Decimal 各要素を符号なし長整数に変換しようとしています。

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

foreach (decimal value in values)
{
   try {
      result = Convert.ToUInt64(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("{0} is outside the range of the UInt64 type.",
                        value);
   }
}
// The example displays the following output:
//    -79228162514264337593543950335 is outside the range of the UInt64 type.
//    -1034.23 is outside the range of the UInt64 type.
//    -12 is outside the range of the UInt64 type.
//    Converted the Decimal value '0' to the UInt64 value 0.
//    Converted the Decimal value '147' to the UInt64 value 147.
//    Converted the Decimal value '199.55' to the UInt64 value 200.
//    Converted the Decimal value '9214.16' to the UInt64 value 9214.
//    79228162514264337593543950335 is outside the range of the UInt64 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 UInt64 type."
// The example displays the following output:
//    -79228162514264337593543950335 is outside the range of the UInt64 type.
//    -1034.23 is outside the range of the UInt64 type.
//    -12 is outside the range of the UInt64 type.
//    Converted the Decimal value '0' to the UInt64 value 0.
//    Converted the Decimal value '147' to the UInt64 value 147.
//    Converted the Decimal value '9214.16' to the UInt64 value 9214.
//    79228162514264337593543950335 is outside the range of the UInt64 type.

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

For Each value As Decimal In values
   Try
      result = Convert.ToUInt64(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 UInt64 type.", _
                        value.GetType().Name, value)
   End Try   
Next                                  
' The example displays the following output:
'    The Decimal value -79228162514264337593543950335 is outside the range of the UInt64 type.
'    The Decimal value -1034.23 is outside the range of the UInt64 type.
'    The Decimal value -12 is outside the range of the UInt64 type.
'    Converted the Decimal value '0' to the UInt64 value 0.
'    Converted the Decimal value '147' to the UInt64 value 147.
'    Converted the Decimal value '199.55' to the UInt64 value 200.
'    Converted the Decimal value '9214.16' to the UInt64 value 9214.
'    The Decimal value 79228162514264337593543950335 is outside the range of the UInt64 type.

こちらもご覧ください

Round

適用対象

ToUInt64(DateTime)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

このメソッドを呼び出すと、必ず InvalidCastException がスローされます。

public:
 static System::UInt64 ToUInt64(DateTime value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (DateTime value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : DateTime -> uint64

Public Shared Function ToUInt64 (value As DateTime) As ULong

パラメーター

value: DateTime

変換する日時の値。

戻り値

UInt64

この変換はサポートされていません。値は返されません。

属性: CLSCompliantAttribute

例外

InvalidCastException

この変換はサポートされていません。

適用対象

ToUInt64(Char)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した Unicode 文字の値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(char value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (char value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : char -> uint64

Public Shared Function ToUInt64 (value As Char) As ULong

パラメーター

value: Char

変換する Unicode 文字。

戻り値

UInt64

value と等価の 64 ビット符号なし整数。

属性: CLSCompliantAttribute

例

次の例では、文字配列内の各要素を符号なし long 整数に変換します。

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

foreach (char ch in chars)
{
   result = Convert.ToUInt64(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 UInt64 value 97.
//    Converted the Char value 'z' to the UInt64 value 122.
//    Converted the Char value '' to the UInt64 value 7.
//    Converted the Char value '?' to the UInt64 value 1023.
//    Converted the Char value '?' to the UInt64 value 32767.
//    Converted the Char value '?' to the UInt64 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 UInt64 value 97.
//    Converted the Char value 'z' to the UInt64 value 122.
//    Converted the Char value '' to the UInt64 value 7.
//    Converted the Char value '?' to the UInt64 value 1023.
//    Converted the Char value '?' to the UInt64 value 32767.
//    Converted the Char value '?' to the UInt64 value 65534.

Dim chars() As Char = { "a"c, "z"c, ChrW(7), ChrW(1023), _
                        ChrW(Short.MaxValue), ChrW(&hFFFE) }
Dim result As ULong
                        
For Each ch As Char in chars
   result = Convert.ToUInt64(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 UInt64 value 97.
'    Converted the Char value 'z' to the UInt64 value 122.
'    Converted the Char value '' to the UInt64 value 7.
'    Converted the Char value '?' to the UInt64 value 1023.
'    Converted the Char value '?' to the UInt64 value 32767.
'    Converted the Char value '?' to the UInt64 value 65534.

適用対象

ToUInt64(Byte)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定した 8 ビット符号なし整数の値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::Byte value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (byte value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : byte -> uint64

Public Shared Function ToUInt64 (value As Byte) As ULong

パラメーター

value: Byte

変換する 8 ビット符号なし整数。

戻り値

UInt64

value と等価の 64 ビット符号付き整数。

属性: CLSCompliantAttribute

例

次の例では、バイト配列内の各要素を符号なし long 整数に変換します。

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

foreach (byte byteValue in bytes)
{
   result = Convert.ToUInt64(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 UInt64 value 0.
//    Converted the Byte value 14 to the UInt64 value 14.
//    Converted the Byte value 122 to the UInt64 value 122.
//    Converted the Byte value 255 to the UInt64 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 UInt64 value 0.
//       Converted the Byte value '14' to the UInt64 value 14.
//       Converted the Byte value '122' to the UInt64 value 122.
//       Converted the Byte value '255' to the UInt64 value 255.

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

For Each byteValue As Byte In bytes
   result = Convert.ToUInt64(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 UInt64 value 0.
'    Converted the Byte value 14 to the UInt64 value 14.
'    Converted the Byte value 122 to the UInt64 value 122.
'    Converted the Byte value 255 to the UInt64 value 255.

適用対象

ToUInt64(Boolean)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定したブール値を等価の 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(bool value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (bool value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : bool -> uint64

Public Shared Function ToUInt64 (value As Boolean) As ULong

パラメーター

value: Boolean

変換するブール値。

戻り値

UInt64

value が true の場合は数値の 1。それ以外の場合は 0。

属性: CLSCompliantAttribute

例

次の例では、ブール true 値と false 値を符号なし長整数に変換します。

bool falseFlag = false;
bool trueFlag = true;

Console.WriteLine("{0} converts to {1}.", falseFlag,
                  Convert.ToUInt64(falseFlag));
Console.WriteLine("{0} converts to {1}.", trueFlag,
                  Convert.ToUInt64(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.ToUInt64(falseFlag))
Console.WriteLine("{0} converts to {1}.", trueFlag, _
                  Convert.ToUInt64(trueFlag))
' The example displays the following output:
'       False converts to 0.
'       True converts to 1.

適用対象

ToUInt64(Object)

Source:: Convert.cs

Source:: Convert.cs

Source:: Convert.cs

重要

この API は CLS 準拠ではありません。

指定したオブジェクトの値を 64 ビット符号なし整数に変換します。

public:
 static System::UInt64 ToUInt64(System::Object ^ value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (object value);

[System.CLSCompliant(false)]
public static ulong ToUInt64 (object? value);

[<System.CLSCompliant(false)>]
static member ToUInt64 : obj -> uint64

Public Shared Function ToUInt64 (value As Object) As ULong

パラメーター

value: Object

IConvertible インターフェイスを実装するオブジェクトか、または null。

戻り値

UInt64

value と等価の 64 ビット符号なし整数。value が null の場合は 0。

属性: CLSCompliantAttribute

例外

FormatException

value が適切な形式ではありません。

InvalidCastException

value が IConvertible インターフェイスを実装していません。

または

この変換はサポートされていません。

OverflowException

value は、 UInt64.MinValue より小さいか、UInt64.MaxValue より大きい数値を表します。

例

次の例では、オブジェクト配列内の各要素を符号なし長整数に変換しようとしています。

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

foreach (object value in values)
{
   try {
      result = Convert.ToUInt64(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 UInt64 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 UInt64 exists for the {0} value {1}.",
                        value.GetType().Name, value);
   }
}
// The example displays the following output:
//    Converted the Boolean value True to the UInt64 value 1.
//    The Int32 value -12 is outside the range of the UInt64 type.
//    Converted the Int32 value 163 to the UInt64 value 163.
//    Converted the Int32 value 935 to the UInt64 value 935.
//    Converted the Char value x to the UInt64 value 120.
//    No conversion to a UInt64 exists for the DateTime value 5/12/2009 12:00:00 AM.
//    Converted the String value 104 to the UInt64 value 104.
//    The String value 103.0 is not in a recognizable format.
//    The String value -1 is outside the range of the UInt64 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 UInt64 value 100.
//    The Double value 1.63E+43 is outside the range of the UInt64 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 UInt64 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 UInt64 value 1.
//    The Int32 value -12 is outside the range of the UInt64 type.
//    Converted the Int32 value '163' to the UInt64 value 163.
//    Converted the Int32 value '935' to the UInt64 value 935.
//    Converted the Char value 'x' to the UInt64 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 UInt64 value 104.
//    The String value 103.0 is not in a recognizable format.
//    The String value -1 is outside the range of the UInt64 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 UInt64 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 ULong

For Each value As Object In values
   Try
      result = Convert.ToUInt64(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 UInt64 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 UInt64 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 UInt64 value 1.
'    The Int32 value -12 is outside the range of the UInt64 type.
'    Converted the Int32 value 163 to the UInt64 value 163.
'    Converted the Int32 value 935 to the UInt64 value 935.
'    Converted the Char value x to the UInt64 value 120.
'    No conversion to a UInt64 exists for the DateTime value 5/12/2009 12:00:00 AM.
'    Converted the String value 104 to the UInt64 value 104.
'    The String value 103.0 is not in a recognizable format.
'    The String value -1 is outside the range of the UInt64 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 UInt64 value 100.
'    The Double value 1.63E+43 is outside the range of the UInt64 type.

注釈

戻り値は、の基になる型valueのメソッドを呼び出IConvertible.ToUInt64した結果です。

適用対象