CultureInfo.Clone Method

Definition

Namespace:

System.Globalization

Assembly:

System.Runtime.dll

Source:

CultureInfo.cs

Creates a copy of the current CultureInfo.

public:
 virtual System::Object ^ Clone();

public virtual object Clone ();

abstract member Clone : unit -> obj
override this.Clone : unit -> obj

Public Overridable Function Clone () As Object

Returns

Object

A copy of the current CultureInfo.

Implements

Clone()

Examples

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

Remarks

The clone is writable even if the original CultureInfo is read-only. Therefore, the properties of the clone can be modified.

A shallow copy of an object is a copy of the object only. If the object contains references to other objects, the shallow copy does not create copies of the referred objects. It refers to the original objects instead. In contrast, a deep copy of an object creates a copy of the object and a copy of everything directly or indirectly referenced by that object.

The Clone method creates an enhanced shallow copy. The objects returned by the NumberFormat, DateTimeFormat, TextInfo, and Calendar properties are also copied. Consequently, the cloned CultureInfo object can modify its copied properties without affecting the original CultureInfo object.

See also

• Object