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DnsPermission::Copy Method

Creates an identical copy of the current permission instance.

Namespace:  System.Net
Assembly:  System (in System.dll)

public:
virtual IPermission^ Copy() override

Return Value

Type: System.Security::IPermission
A new instance of the DnsPermission class that is an identical copy of the current instance.

Implements

IPermission::Copy()

A copy of a DnsPermission instance provides the same access to DNS servers as the original permission instance.

The following example creates an identical copy of an existing DnsPermission instance.

public:
   void UseDns()
   {
      // Create a DnsPermission instance.
      DnsPermission^ myPermission = gcnew DnsPermission( PermissionState::Unrestricted );
      // Check for permission.
      myPermission->Demand();
      // Create an identical copy of the above 'DnsPermission' Object*.
      DnsPermission^ myPermissionCopy = dynamic_cast<DnsPermission^>(myPermission->Copy());
      Console::WriteLine( "Attributes and Values of 'DnsPermission' instance :" );
      // Print the attributes and values.
      PrintKeysAndValues( myPermission->ToXml()->Attributes );
      Console::WriteLine( "Attribute and values of copied instance :" );
      PrintKeysAndValues( myPermissionCopy->ToXml()->Attributes );
   }

private:
   void PrintKeysAndValues( Hashtable^ myHashtable )
   {
      // Get the enumerator that can iterate through the hash table.
      IDictionaryEnumerator^ myEnumerator = myHashtable->GetEnumerator();
      Console::WriteLine( "\t-KEY-\t-VALUE-" );
      while ( myEnumerator->MoveNext() )
      {
         Console::WriteLine( "\t {0}:\t {1}", myEnumerator->Key, myEnumerator->Value );
      }
      Console::WriteLine();
   }

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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