CultureInfo.ReadOnly(CultureInfo) 方法

定義

命名空間:

System.Globalization

組件:

System.Runtime.dll

來源:

CultureInfo.cs

傳回指定 CultureInfo 物件的唯讀包裝函式。

C#

public static System.Globalization.CultureInfo ReadOnly (System.Globalization.CultureInfo ci);

參數

ci

CultureInfo

要包裝的 CultureInfo 物件。

傳回

CultureInfo

ci 的唯讀 CultureInfo 包裝函式。

例外狀況

ArgumentNullException

ci 為 null。

範例

下列範例顯示 方法有助於ReadOnly保護DateTimeFormatInfo與 相關聯的 CultureInfo和 NumberFormatInfo 實例。

C#

using System;
using System.Globalization;

public class SamplesCultureInfo  {

   public static void Main()  {

      // Creates a CultureInfo.
      CultureInfo myCI = new CultureInfo( "en-US" );

      // Creates a read-only CultureInfo based on myCI.
      CultureInfo myReadOnlyCI = CultureInfo.ReadOnly( myCI );

      // Display the read-only status of each CultureInfo and their DateTimeFormat and NumberFormat properties.
      Console.WriteLine( "myCI is {0}.", myCI.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myCI.DateTimeFormat is {0}.", myCI.DateTimeFormat.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myCI.NumberFormat is {0}.", myCI.NumberFormat.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myReadOnlyCI is {0}.", myReadOnlyCI.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myReadOnlyCI.DateTimeFormat is {0}.", myReadOnlyCI.DateTimeFormat.IsReadOnly ? "read only" : "writable" );
      Console.WriteLine( "myReadOnlyCI.NumberFormat is {0}.", myReadOnlyCI.NumberFormat.IsReadOnly ? "read only" : "writable" );
   }
}

/*
This code produces the following output.

myCI is writable.
myCI.DateTimeFormat is writable.
myCI.NumberFormat is writable.
myReadOnlyCI is read only.
myReadOnlyCI.DateTimeFormat is read only.
myReadOnlyCI.NumberFormat is read only.

*/

備註

這個包裝函式可防止對 的任何修改ci，或 由和DateTimeFormatciNumberFormat 傳ci回的物件。

適用於

另請參閱

• IsReadOnly