NumberFormatInfo.NumberDecimalDigits 屬性

定義

取得或設定要在數值中使用的小數位數。

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

屬性值

Int32

要在數值中使用的小數位數。 InvariantInfo 的預設值為 2。

例外狀況

屬性已設定為小於 0 或大於 99 的值。

正在設定屬性,而且 NumberFormatInfo 物件為唯讀。

範例

下列範例示範變更屬性的效果 NumberDecimalDigits

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

備註

NumberDecimalDigits 數值格式化作業中,屬性會搭配 "F" 和 "N" 標準格式字串使用,而不含有效位數規範。 它會定義出現在小數分隔符號之後的預設小數位數。 如果使用有效位數規範,就會覆寫此值。 如需詳細資訊,請參閱標準數值格式字串

適用於

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