CultureInfo.NumberFormat 屬性

定義

取得或設定 NumberFormatInfo,定義數字、貨幣和百分比在文化特性上適當的顯示格式。Gets or sets a NumberFormatInfo that defines the culturally appropriate format of displaying numbers, currency, and percentage.

public:
 virtual property System::Globalization::NumberFormatInfo ^ NumberFormat { System::Globalization::NumberFormatInfo ^ get(); void set(System::Globalization::NumberFormatInfo ^ value); };
public virtual System.Globalization.NumberFormatInfo NumberFormat { get; set; }
member this.NumberFormat : System.Globalization.NumberFormatInfo with get, set
Public Overridable Property NumberFormat As NumberFormatInfo

屬性值

NumberFormatInfo,定義用於顯示數字、貨幣和百分比的適當文化特性格式。A NumberFormatInfo that defines the culturally appropriate format of displaying numbers, currency, and percentage.

例外狀況

此屬性設定為 null。The property is set to null.

NumberFormat 屬性或 NumberFormatInfo 屬性的任何一個已設定,而且 CultureInfo 處於唯讀狀態。The NumberFormat property or any of the NumberFormatInfo properties is set, and the CultureInfo is read-only.

範例

下列程式碼範例顯示,CultureInfo 也會複製與 CultureInfo相關聯的 DateTimeFormatInfoNumberFormatInfo 實例。The following code example shows that CultureInfo.Clone also clones the DateTimeFormatInfo and NumberFormatInfo instances associated with the CultureInfo.

using namespace System;
using namespace System::Globalization;
int main()
{
   
   // Creates and initializes a CultureInfo.
   CultureInfo^ myCI = gcnew CultureInfo( "en-US",false );
   
   // Clones myCI and modifies the DTFI and NFI instances associated with the clone.
   CultureInfo^ myCIclone = dynamic_cast<CultureInfo^>(myCI->Clone());
   myCIclone->DateTimeFormat->AMDesignator = "a.m.";
   myCIclone->DateTimeFormat->DateSeparator = "-";
   myCIclone->NumberFormat->CurrencySymbol = "USD";
   myCIclone->NumberFormat->NumberDecimalDigits = 4;
   
   // Displays the properties of the DTFI and NFI instances associated with the original and with the clone. 
   Console::WriteLine( "DTFI/NFI PROPERTY\tORIGINAL\tMODIFIED CLONE" );
   Console::WriteLine( "DTFI.AMDesignator\t{0}\t\t{1}", myCI->DateTimeFormat->AMDesignator, myCIclone->DateTimeFormat->AMDesignator );
   Console::WriteLine( "DTFI.DateSeparator\t{0}\t\t{1}", myCI->DateTimeFormat->DateSeparator, myCIclone->DateTimeFormat->DateSeparator );
   Console::WriteLine( "NFI.CurrencySymbol\t{0}\t\t{1}", myCI->NumberFormat->CurrencySymbol, myCIclone->NumberFormat->CurrencySymbol );
   Console::WriteLine( "NFI.NumberDecimalDigits\t{0}\t\t{1}", myCI->NumberFormat->NumberDecimalDigits, myCIclone->NumberFormat->NumberDecimalDigits );
}

/*
This code produces the following output.

DTFI/NFI PROPERTY       ORIGINAL        MODIFIED CLONE
DTFI.AMDesignator       AM              a.m.
DTFI.DateSeparator      /               -
NFI.CurrencySymbol      $               USD
NFI.NumberDecimalDigits 2               4
*/
using System;
using System.Globalization;

public class SamplesCultureInfo  {

   public static void Main()  {

      // Creates and initializes a CultureInfo.
      CultureInfo myCI = new CultureInfo("en-US", false);

      // Clones myCI and modifies the DTFI and NFI instances associated with the clone.
      CultureInfo myCIclone = (CultureInfo) myCI.Clone();
      myCIclone.DateTimeFormat.AMDesignator = "a.m.";
      myCIclone.DateTimeFormat.DateSeparator = "-";
      myCIclone.NumberFormat.CurrencySymbol = "USD";
      myCIclone.NumberFormat.NumberDecimalDigits = 4;

      // Displays the properties of the DTFI and NFI instances associated with the original and with the clone. 
      Console.WriteLine( "DTFI/NFI PROPERTY\tORIGINAL\tMODIFIED CLONE" );
      Console.WriteLine( "DTFI.AMDesignator\t{0}\t\t{1}", myCI.DateTimeFormat.AMDesignator, myCIclone.DateTimeFormat.AMDesignator );
      Console.WriteLine( "DTFI.DateSeparator\t{0}\t\t{1}", myCI.DateTimeFormat.DateSeparator, myCIclone.DateTimeFormat.DateSeparator );
      Console.WriteLine( "NFI.CurrencySymbol\t{0}\t\t{1}", myCI.NumberFormat.CurrencySymbol, myCIclone.NumberFormat.CurrencySymbol );
      Console.WriteLine( "NFI.NumberDecimalDigits\t{0}\t\t{1}", myCI.NumberFormat.NumberDecimalDigits, myCIclone.NumberFormat.NumberDecimalDigits );
      
   }

}

/*
This code produces the following output.

DTFI/NFI PROPERTY       ORIGINAL        MODIFIED CLONE
DTFI.AMDesignator       AM              a.m.
DTFI.DateSeparator      /               -
NFI.CurrencySymbol      $               USD
NFI.NumberDecimalDigits 2               4

*/
Imports System.Globalization


Public Class SamplesCultureInfo
   
   Public Shared Sub Main()
      
      ' Creates and initializes a CultureInfo.
      Dim myCI As New CultureInfo("en-US", False)
      
      ' Clones myCI and modifies the DTFI and NFI instances associated with the clone.
      Dim myCIclone As CultureInfo = CType(myCI.Clone(), CultureInfo)
      myCIclone.DateTimeFormat.AMDesignator = "a.m."
      myCIclone.DateTimeFormat.DateSeparator = "-"
      myCIclone.NumberFormat.CurrencySymbol = "USD"
      myCIclone.NumberFormat.NumberDecimalDigits = 4
      
      ' Displays the properties of the DTFI and NFI instances associated with the original and with the clone. 
      Console.WriteLine("DTFI/NFI PROPERTY" + ControlChars.Tab + "ORIGINAL" + ControlChars.Tab + "MODIFIED CLONE")
      Console.WriteLine("DTFI.AMDesignator" + ControlChars.Tab + "{0}" + ControlChars.Tab + ControlChars.Tab + "{1}", myCI.DateTimeFormat.AMDesignator, myCIclone.DateTimeFormat.AMDesignator)
      Console.WriteLine("DTFI.DateSeparator" + ControlChars.Tab + "{0}" + ControlChars.Tab + ControlChars.Tab + "{1}", myCI.DateTimeFormat.DateSeparator, myCIclone.DateTimeFormat.DateSeparator)
      Console.WriteLine("NFI.CurrencySymbol" + ControlChars.Tab + "{0}" + ControlChars.Tab + ControlChars.Tab + "{1}", myCI.NumberFormat.CurrencySymbol, myCIclone.NumberFormat.CurrencySymbol)
      Console.WriteLine("NFI.NumberDecimalDigits" + ControlChars.Tab + "{0}" + ControlChars.Tab + ControlChars.Tab + "{1}", myCI.NumberFormat.NumberDecimalDigits, myCIclone.NumberFormat.NumberDecimalDigits)

   End Sub

End Class


' This code produces the following output.
'
' DTFI/NFI PROPERTY       ORIGINAL        MODIFIED CLONE
' DTFI.AMDesignator       AM              a.m.
' DTFI.DateSeparator      /               -
' NFI.CurrencySymbol      $               USD
' NFI.NumberDecimalDigits 2               4

備註

OverridesOverrides

使用者可以選擇透過 [控制台] 的 [地區及語言選項] 部分,覆寫與 Windows 目前文化特性相關聯的一些值。The user might choose to override some of the values associated with the current culture of Windows through the regional and language options portion of Control Panel. 例如,使用者可能會選擇以不同的格式來顯示日期,或使用文化特性的預設值以外的貨幣。For example, the user might choose to display the date in a different format or to use a currency other than the default for the culture.

如果 UseUserOverridetrue 而且指定的文化特性與目前的 Windows 文化特性相符,則 CultureInfo 會使用這些覆寫,包括 DateTimeFormat 屬性所傳回之 DateTimeFormatInfo 實例屬性的使用者設定,以及 NumberFormatInfo 屬性所傳回之 NumberFormat 實例的屬性。If UseUserOverride is true and the specified culture matches the current culture of Windows, the CultureInfo uses those overrides, including user settings for the properties of the DateTimeFormatInfo instance returned by the DateTimeFormat property, and the properties of the NumberFormatInfo instance returned by the NumberFormat property. 如果使用者設定與 CultureInfo相關聯的文化特性不相容,例如,如果選取的行事曆不是其中一個 OptionalCalendars,則方法的結果和屬性的值會是未定義的。If the user settings are incompatible with the culture associated with the CultureInfo, for example, if the selected calendar is not one of the OptionalCalendars, the results of the methods and the values of the properties are undefined.

在使用者存取屬性之前,不會計算 DateTimeFormat 屬性和 NumberFormat 屬性的值。The values of the DateTimeFormat property and the NumberFormat property are not calculated until the user accesses the property. 如果使用者在應用程式執行時使用 [控制台] 將目前文化特性變更為新文化特性,然後存取 DateTimeFormatNumberFormat 屬性,則應用程式會抓取新文化特性的預設值。If the user uses the Control Panel to change the current culture to a new culture while the application is running and then accesses the DateTimeFormat or NumberFormat property, the application retrieves the defaults for the new culture. 不是原始文化特性的覆寫。not the overrides for the original culture. 若要保留原始目前文化特性的覆寫,應用程式應該先存取 DateTimeFormatNumberFormat 屬性,再變更目前的文化特性。To preserve the overrides for the original current culture, the application should access the DateTimeFormat and NumberFormat properties before changing the current culture.

適用於

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