Decimal.One 字段
表示数字一 (1)。
**命名空间:**System
**程序集:**mscorlib（在 mscorlib.dll 中）
语法
声明
Public Shared ReadOnly One As Decimal
用法
Dim value As Decimal
value = Decimal.One
public static readonly decimal One
public:
static initonly Decimal One
public static final Decimal One
public static final var One : decimal
示例
下面的代码示例阐释了如何使用 One 字段。
' Example of the Decimal fields.
Imports System
Imports Microsoft.VisualBasic
Module DecimalFieldsDemo
Sub Main( )
Const numberFmt As String = "{0,-25}{1,45:N0}"
Const exprFmt As String = "{0,-55}{1,15}"
Console.WriteLine( _
"This example of the fields of the Decimal structure" & _
vbCrLf & "generates the following output." & vbCrLf )
Console.WriteLine( numberFmt, "Field or Expression", "Value" )
Console.WriteLine( numberFmt, "-------------------", "-----" )
' Display the values of the Decimal fields.
Console.WriteLine( numberFmt, "Decimal.MaxValue", _
Decimal.MaxValue )
Console.WriteLine( numberFmt, "Decimal.MinValue", _
Decimal.MinValue )
Console.WriteLine( numberFmt, "Decimal.MinusOne", _
Decimal.MinusOne )
Console.WriteLine( numberFmt, "Decimal.One", _
Decimal.One )
Console.WriteLine( numberFmt, "Decimal.Zero", _
Decimal.Zero )
Console.WriteLine( )
' Display the values of expressions of the Decimal fields.
Console.WriteLine( exprFmt, _
"( Decimal.MinusOne + Decimal.One ) = Decimal.Zero", _
( Decimal.MinusOne + Decimal.One ) = Decimal.Zero )
Console.WriteLine( exprFmt, _
"Decimal.MaxValue + Decimal.MinValue", _
Decimal.MaxValue + Decimal.MinValue )
Console.WriteLine( exprFmt, _
"Decimal.MinValue / Decimal.MaxValue", _
Decimal.MinValue/Decimal.MaxValue )
Console.WriteLine( "{0,-40}{1,30}", _
"100000000000000D / Decimal.MaxValue", _
100000000000000D / Decimal.MaxValue )
End Sub
End Module
' This example of the fields of the Decimal structure
' generates the following output.
'
' Field or Expression Value
' ------------------- -----
' Decimal.MaxValue 79,228,162,514,264,337,593,543,950,335
' Decimal.MinValue -79,228,162,514,264,337,593,543,950,335
' Decimal.MinusOne -1
' Decimal.One 1
' Decimal.Zero 0
'
' ( Decimal.MinusOne + Decimal.One ) = Decimal.Zero True
' Decimal.MaxValue + Decimal.MinValue 0
' Decimal.MinValue / Decimal.MaxValue -1
' 100000000000000D / Decimal.MaxValue 0.0000000000000012621774483536
// Example of the Decimal fields.
using System;
class DecimalFieldsDemo
{
public static void Main( )
{
const string numberFmt = "{0,-25}{1,45:N0}";
const string exprFmt = "{0,-55}{1,15}";
Console.WriteLine(
"This example of the fields of the Decimal structure " +
"\ngenerates the following output.\n" );
Console.WriteLine( numberFmt, "Field or Expression", "Value" );
Console.WriteLine( numberFmt, "-------------------", "-----" );
// Display the values of the Decimal fields.
Console.WriteLine( numberFmt, "Decimal.MaxValue",
Decimal.MaxValue );
Console.WriteLine( numberFmt, "Decimal.MinValue",
Decimal.MinValue );
Console.WriteLine( numberFmt, "Decimal.MinusOne",
Decimal.MinusOne );
Console.WriteLine( numberFmt, "Decimal.One", Decimal.One );
Console.WriteLine( numberFmt, "Decimal.Zero", Decimal.Zero );
Console.WriteLine( );
// Display the values of expressions of the Decimal fields.
Console.WriteLine( exprFmt,
"( Decimal.MinusOne + Decimal.One ) == Decimal.Zero",
(Decimal.MinusOne + Decimal.One ) == Decimal.Zero );
Console.WriteLine( exprFmt,
"Decimal.MaxValue + Decimal.MinValue",
Decimal.MaxValue + Decimal.MinValue );
Console.WriteLine( exprFmt,
"Decimal.MinValue / Decimal.MaxValue",
Decimal.MinValue / Decimal.MaxValue );
Console.WriteLine( "{0,-40}{1,30}",
"100000000000000M / Decimal.MaxValue",
100000000000000M / Decimal.MaxValue );
}
}
/*
This example of the fields of the Decimal structure
generates the following output.
Field or Expression Value
------------------- -----
Decimal.MaxValue 79,228,162,514,264,337,593,543,950,335
Decimal.MinValue -79,228,162,514,264,337,593,543,950,335
Decimal.MinusOne -1
Decimal.One 1
Decimal.Zero 0
( Decimal.MinusOne + Decimal.One ) == Decimal.Zero True
Decimal.MaxValue + Decimal.MinValue 0
Decimal.MinValue / Decimal.MaxValue -1
100000000000000M / Decimal.MaxValue 0.0000000000000012621774483536
*/
// Example of the Decimal fields.
using namespace System;
int main()
{
String^ numberFmt = "{0,-25}{1,45:N0}";
String^ exprFmt = "{0,-55}{1,15}";
Console::WriteLine( "This example of the fields of the Decimal structure "
"\ngenerates the following output.\n" );
Console::WriteLine( numberFmt, "Field or Expression", "Value" );
Console::WriteLine( numberFmt, "-------------------", "-----" );
// Display the values of the Decimal fields.
Console::WriteLine( numberFmt, "Decimal::MaxValue", Decimal::MaxValue );
Console::WriteLine( numberFmt, "Decimal::MinValue", Decimal::MinValue );
Console::WriteLine( numberFmt, "Decimal::MinusOne", Decimal::MinusOne );
Console::WriteLine( numberFmt, "Decimal::One", Decimal::One );
Console::WriteLine( numberFmt, "Decimal::Zero", Decimal::Zero );
Console::WriteLine();
// Display the values of expressions of the Decimal fields.
Console::WriteLine( exprFmt, "( Decimal::MinusOne + Decimal::One ) == Decimal::Zero", (Decimal::MinusOne + Decimal::One) == Decimal::Zero );
Console::WriteLine( exprFmt, "Decimal::MaxValue + Decimal::MinValue", Decimal::MaxValue + Decimal::MinValue );
Console::WriteLine( exprFmt, "Decimal::MinValue / Decimal::MaxValue", Decimal::MinValue / Decimal::MaxValue );
Console::WriteLine( "{0,-40}{1,30}", "100000000000000M / Decimal::MaxValue", Convert::ToDecimal( 100000000000000 ) / Decimal::MaxValue );
}
/*
This example of the fields of the Decimal structure
generates the following output.
Field or Expression Value
------------------- -----
Decimal::MaxValue 79,228,162,514,264,337,593,543,950,335
Decimal::MinValue -79,228,162,514,264,337,593,543,950,335
Decimal::MinusOne -1
Decimal::One 1
Decimal::Zero 0
( Decimal::MinusOne + Decimal::One ) == Decimal::Zero True
Decimal::MaxValue + Decimal::MinValue 0
Decimal::MinValue / Decimal::MaxValue -1
100000000000000M / Decimal::MaxValue 0.0000000000000012621774483536
*/
// Example of the Decimal fields.
import System.* ;
class DecimalFieldsDemo
{
public static void main(String[] args)
{
final System.String numberFmt = "{0,-25}{1,45:N0}";
final System.String exprFmt = "{0,-55}{1,15}";
Console.WriteLine(("This example of the fields of the Decimal "
+ "structure \ngenerates the following output.\n"));
Console.WriteLine(numberFmt, "Field or Expression", "Value");
Console.WriteLine(numberFmt, "-------------------", "-----");
// Display the values of the Decimal fields.
Console.WriteLine(numberFmt, "Decimal.MaxValue", Decimal.MaxValue);
Console.WriteLine(numberFmt, "Decimal.MinValue", Decimal.MinValue);
Console.WriteLine(numberFmt, "Decimal.MinusOne", Decimal.MinusOne);
Console.WriteLine(numberFmt, "Decimal.One", Decimal.One);
Console.WriteLine(numberFmt, "Decimal.Zero", Decimal.Zero);
Console.WriteLine();
// Display the values of expressions of the Decimal fields.
Console.WriteLine(exprFmt,
"( Decimal.MinusOne ,Decimal.One ) == Decimal.Zero ",
System.Convert.ToString(System.Decimal.Add(Decimal.MinusOne,
Decimal.One) == Decimal.Zero));
Console.WriteLine(exprFmt, "Decimal.MaxValue + Decimal.MinValue",
System.Decimal.Add(Decimal.MaxValue, Decimal.MinValue));
Console.WriteLine(exprFmt, "Decimal.MinValue / Decimal.MaxValue",
System.Decimal.Divide(Decimal.MinValue, Decimal.MaxValue));
Console.WriteLine("{0,-40}{1,30}","100000000000000M / Decimal.MaxValue",
System.Decimal.Divide(System.Convert.ToDecimal(100000000000000L),
Decimal.MaxValue));
} //main
} //DecimalFieldsDemo
/*
This example of the fields of the Decimal structure
generates the following output.
Field or Expression Value
------------------- -----
Decimal.MaxValue 79,228,162,514,264,337,593,543,950,335
Decimal.MinValue -79,228,162,514,264,337,593,543,950,335
Decimal.MinusOne -1
Decimal.One 1
Decimal.Zero 0
( Decimal.MinusOne + Decimal.One ) == Decimal.Zero True
Decimal.MaxValue + Decimal.MinValue 0
Decimal.MinValue / Decimal.MaxValue -1
100000000000000M / Decimal.MaxValue 0.0000000000000012621774483536
*/
平台
Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0
.NET Compact Framework
受以下版本支持：2.0、1.0
请参见
参考
Decimal 结构
Decimal 成员
System 命名空间
Zero
MinusOne
MaxValue
MinValue