Decimal.ToUInt64 メソッド
指定した Decimal の値を、等価の 64 ビット符号なし整数に変換します。
このメソッドは、CLS と互換性がありません。CLS との互換性に関する詳細については 「共通言語仕様の概要」 を参照してください。
<CLSCompliant(False)>
Public Shared Function ToUInt64( _ ByVal d As Decimal _) As UInt64
[C#]
[CLSCompliant(false)]
public static ulong ToUInt64(decimald);
[C++]
[CLSCompliant(false)]
public: static unsigned __int64 ToUInt64(Decimald);
[JScript]
public
CLSCompliant(false)
static function ToUInt64(d : Decimal) : UInt64;
パラメータ
- d
変換する Decimal 値。
戻り値
d の値と等価な 64 ビット符号なし整数。
例外
| 例外の種類 | 条件 |
|---|---|
| OverflowException | d が負の値であるか、 UInt64.MaxValue よりも大きい値です。 |
解説
戻り値は 10 進値の整数部分です。小数の桁は切り捨てられます。
使用例
[Visual Basic, C#, C++] ToUInt64 メソッドを使用して、 Decimal の数値を UInt64 の値に変換するコード例を次に示します。
' Example of the Decimal.ToInt64 and Decimal.ToUInt64 methods.
Imports System
Imports Microsoft.VisualBasic
Module DecimalToU_Int64Demo
Dim formatter As String = "{0,25}{1,22}{2,22}"
' Get the exception type name; remove the namespace prefix.
Function GetExceptionType( ex As Exception ) As String
Dim exceptionType As String = ex.GetType( ).ToString( )
Return exceptionType.Substring( _
exceptionType.LastIndexOf( "."c ) + 1 )
End Function
' Convert the Decimal argument; catch exceptions that are thrown.
Sub DecimalToU_Int64( argument As Decimal )
Dim Int64Value As Object
Dim UInt64Value As Object
' Convert the argument to a Long value.
Try
Int64Value = Decimal.ToInt64( argument )
Catch ex As Exception
Int64Value = GetExceptionType( ex )
End Try
' Convert the argument to a UInt64 value.
Try
UInt64Value = Decimal.ToUInt64( argument )
Catch ex As Exception
UInt64Value = GetExceptionType( ex )
End Try
Console.WriteLine( formatter, argument, _
Int64Value, UInt64Value )
End Sub
Sub Main( )
Console.WriteLine( "This example of the " & vbCrLf & _
" Decimal.ToInt64( Decimal ) and " & vbCrLf & _
" Decimal.ToUInt64( Decimal ) " & vbCrLf & "methods " & _
"generates the following output. It " & vbCrLf & _
"displays several converted Decimal values." & vbCrLf )
Console.WriteLine( formatter, "Decimal argument", _
"Long/exception", "UInt64/exception" )
Console.WriteLine( formatter, "----------------", _
"--------------", "----------------" )
' Convert Decimal values and display the results.
DecimalToU_Int64( 123D )
DecimalToU_Int64( New Decimal( 123000, 0, 0, False, 3 ) )
DecimalToU_Int64( 123.999D )
DecimalToU_Int64( 18446744073709551615.999D )
DecimalToU_Int64( 18446744073709551616D )
DecimalToU_Int64( 9223372036854775807.999D )
DecimalToU_Int64( 9223372036854775808D )
DecimalToU_Int64( - 0.999D )
DecimalToU_Int64( - 1D )
DecimalToU_Int64( - 9223372036854775808.999D )
DecimalToU_Int64( - 9223372036854775809D )
End Sub
End Module
' This example of the
' Decimal.ToInt64( Decimal ) and
' Decimal.ToUInt64( Decimal )
' methods generates the following output. It
' displays several converted Decimal values.
'
' Decimal argument Long/exception UInt64/exception
' ---------------- -------------- ----------------
' 123 123 123
' 123.000 123 123
' 123.999 123 123
' 18446744073709551615.999 OverflowException 18446744073709551615
' 18446744073709551616 OverflowException OverflowException
' 9223372036854775807.999 9223372036854775807 9223372036854775807
' 9223372036854775808 OverflowException 9223372036854775808
' -0.999 0 0
' -1 -1 OverflowException
' -9223372036854775808.999 -9223372036854775808 OverflowException
' -9223372036854775809 OverflowException OverflowException
[C#]
// Example of the decimal.ToInt64 and decimal.ToUInt64 methods.
using System;
class DecimalToU_Int64Demo
{
const string formatter = "{0,25}{1,22}{2,22}";
// Get the exception type name; remove the namespace prefix.
public static string GetExceptionType( Exception ex )
{
string exceptionType = ex.GetType( ).ToString( );
return exceptionType.Substring(
exceptionType.LastIndexOf( '.' ) + 1 );
}
// Convert the decimal argument; catch exceptions that are thrown.
public static void DecimalToU_Int64( decimal argument )
{
object Int64Value;
object UInt64Value;
// Convert the argument to a long value.
try
{
Int64Value = decimal.ToInt64( argument );
}
catch( Exception ex )
{
Int64Value = GetExceptionType( ex );
}
// Convert the argument to a ulong value.
try
{
UInt64Value = decimal.ToUInt64( argument );
}
catch( Exception ex )
{
UInt64Value = GetExceptionType( ex );
}
Console.WriteLine( formatter, argument,
Int64Value, UInt64Value );
}
public static void Main( )
{
Console.WriteLine( "This example of the \n" +
" decimal.ToInt64( decimal ) and \n" +
" decimal.ToUInt64( decimal ) \nmethods " +
"generates the following output. It \ndisplays " +
"several converted decimal values.\n" );
Console.WriteLine( formatter, "decimal argument",
"long/exception", "ulong/exception" );
Console.WriteLine( formatter, "----------------",
"--------------", "---------------" );
// Convert decimal values and display the results.
DecimalToU_Int64( 123M );
DecimalToU_Int64( new decimal( 123000, 0, 0, false, 3 ) );
DecimalToU_Int64( 123.999M );
DecimalToU_Int64( 18446744073709551615.999M );
DecimalToU_Int64( 18446744073709551616M );
DecimalToU_Int64( 9223372036854775807.999M );
DecimalToU_Int64( 9223372036854775808M );
DecimalToU_Int64( - 0.999M );
DecimalToU_Int64( - 1M );
DecimalToU_Int64( - 9223372036854775808.999M );
DecimalToU_Int64( - 9223372036854775809M );
}
}
/*
This example of the
decimal.ToInt64( decimal ) and
decimal.ToUInt64( decimal )
methods generates the following output. It
displays several converted decimal values.
decimal argument long/exception ulong/exception
---------------- -------------- ---------------
123 123 123
123.000 123 123
123.999 123 123
18446744073709551615.999 OverflowException 18446744073709551615
18446744073709551616 OverflowException OverflowException
9223372036854775807.999 9223372036854775807 9223372036854775807
9223372036854775808 OverflowException 9223372036854775808
-0.999 0 0
-1 -1 OverflowException
-9223372036854775808.999 -9223372036854775808 OverflowException
-9223372036854775809 OverflowException OverflowException
*/
[C++]
// Example of the Decimal::ToInt64 and Decimal::ToUInt64 methods.
#using <mscorlib.dll>
using namespace System;
const __wchar_t* formatter = L"{0,25}{1,22}{2,22}";
// Get the exception type name; remove the namespace prefix.
String* GetExceptionType( Exception* ex )
{
String* exceptionType = ex->GetType( )->ToString( );
return exceptionType->Substring(
exceptionType->LastIndexOf( '.' ) + 1 );
}
// Convert the Decimal argument; catch exceptions that are thrown.
void DecimalToU_Int64( Decimal argument )
{
Object* Int64Value;
Object* UInt64Value;
// Convert the argument to an __int64 value.
try
{
Int64Value = __box( Decimal::ToInt64( argument ) );
}
catch( Exception* ex )
{
Int64Value = GetExceptionType( ex );
}
// Convert the argument to an unsigned __int64 value.
try
{
UInt64Value = __box( Decimal::ToUInt64( argument ) );
}
catch( Exception* ex )
{
UInt64Value = GetExceptionType( ex );
}
Console::WriteLine( formatter, __box( argument ),
Int64Value, UInt64Value );
}
void main( )
{
Console::WriteLine( S"This example of the \n"
S" Decimal::ToInt64( Decimal ) and \n"
S" Decimal::ToUInt64( Decimal ) \nmethods "
S"generates the following output. It \ndisplays "
S"several converted Decimal values.\n" );
Console::WriteLine( formatter, S"Decimal argument",
S"__int64/exception", S"unsigned __int64" );
Console::WriteLine( formatter, S"----------------",
S"-----------------", S"----------------" );
// Convert Decimal values and display the results.
DecimalToU_Int64( Decimal::Parse( "123" ) );
DecimalToU_Int64( Decimal( 123000, 0, 0, false, 3 ) );
DecimalToU_Int64( Decimal::Parse( "123.999" ) );
DecimalToU_Int64( Decimal::Parse( "18446744073709551615.999" ) );
DecimalToU_Int64( Decimal::Parse( "18446744073709551616" ) );
DecimalToU_Int64( Decimal::Parse( "9223372036854775807.999" ) );
DecimalToU_Int64( Decimal::Parse( "9223372036854775808" ) );
DecimalToU_Int64( Decimal::Parse( "-0.999" ) );
DecimalToU_Int64( Decimal::Parse( "-1" ) );
DecimalToU_Int64( Decimal::Parse( "-9223372036854775808.999" ) );
DecimalToU_Int64( Decimal::Parse( "-9223372036854775809" ) );
}
/*
This example of the
Decimal::ToInt64( Decimal ) and
Decimal::ToUInt64( Decimal )
methods generates the following output. It
displays several converted Decimal values.
Decimal argument __int64/exception unsigned __int64
---------------- ----------------- ----------------
123 123 123
123.000 123 123
123.999 123 123
18446744073709551615.999 OverflowException 18446744073709551615
18446744073709551616 OverflowException OverflowException
9223372036854775807.999 9223372036854775807 9223372036854775807
9223372036854775808 OverflowException 9223372036854775808
-0.999 0 0
-1 -1 OverflowException
-9223372036854775808.999 -9223372036854775808 OverflowException
-9223372036854775809 OverflowException OverflowException
*/
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必要条件
プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, .NET Compact Framework - Windows CE .NET