NumberFormatInfo.NumberDecimalDigits 属性

定义

获取或设置在数值中使用的小数位数。Gets or sets the number of decimal places to use in numeric values.

public:
 property int NumberDecimalDigits { int get(); void set(int value); };
public int NumberDecimalDigits { get; set; }
member this.NumberDecimalDigits : int with get, set
Public Property NumberDecimalDigits As Integer

属性值

在数值中使用的小数位数。The number of decimal places to use in numeric values. InvariantInfo 的默认值为 2。The default for InvariantInfo is 2.

异常

该属性设置为一个小于 0 或大于 99 的值。The property is being set to a value that is less than 0 or greater than 99.

设置了该属性,但 NumberFormatInfo 对象为只读。The property is being set and the NumberFormatInfo object is read-only.

示例

下面的示例演示更改NumberDecimalDigits属性的效果。The following example demonstrates the effect of changing the NumberDecimalDigits property.

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Gets a NumberFormatInfo associated with the en-US culture.
   CultureInfo^ MyCI = gcnew CultureInfo( "en-US",false );
   NumberFormatInfo^ nfi = MyCI->NumberFormat;
   
   // Displays a negative value with the default number of decimal digits (2).
   Int64 myInt = -1234;
   Console::WriteLine( myInt.ToString( "N", nfi ) );
   
   // Displays the same value with four decimal digits.
   nfi->NumberDecimalDigits = 4;
   Console::WriteLine( myInt.ToString( "N", nfi ) );
}

/* 
This code produces the following output.
-1, 234.00
-1, 234.0000
*/
using System;
using System.Globalization;

class NumberFormatInfoSample {

   public static void Main() {

      // Gets a NumberFormatInfo associated with the en-US culture.
      NumberFormatInfo nfi = new CultureInfo( "en-US", false ).NumberFormat;

      // Displays a negative value with the default number of decimal digits (2).
      Int64 myInt = -1234;
      Console.WriteLine( myInt.ToString( "N", nfi ) );

      // Displays the same value with four decimal digits.
      nfi.NumberDecimalDigits = 4;
      Console.WriteLine( myInt.ToString( "N", nfi ) );

   }
}


/* 
This code produces the following output.

-1,234.00
-1,234.0000
*/
   
Imports System.Globalization

Class NumberFormatInfoSample

   Public Shared Sub Main()

      ' Gets a NumberFormatInfo associated with the en-US culture.
      Dim nfi As NumberFormatInfo = New CultureInfo("en-US", False).NumberFormat

      ' Displays a negative value with the default number of decimal digits (2).
      Dim myInt As Int64 = - 1234
      Console.WriteLine(myInt.ToString("N", nfi))

      ' Displays the same value with four decimal digits.
      nfi.NumberDecimalDigits = 4
      Console.WriteLine(myInt.ToString("N", nfi))

   End Sub

End Class



'This code produces the following output.

'

'-1,234.00

'-1,234.0000


注解

NumberDecimalDigits属性用于 "F" 和 "N" 标准格式字符串,在数字格式设置操作中没有精度说明符。The NumberDecimalDigits property is used with the "F" and "N" standard format strings without a precision specifier in numeric formatting operations. 它定义小数点分隔符后显示的默认小数位数。It defines the default number of fractional digits that appear after the decimal separator. 如果使用精度说明符,则此值将被重写。This value is overridden if a precision specifier is used. 有关详细信息,请参阅标准数值格式字符串For more information, see Standard Numeric Format Strings.

适用于

另请参阅