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DnsPermission.ToXml Method

Creates an XML encoding of a DnsPermission instance and its current state.

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

public override SecurityElement ToXml()

Return Value

Type: System.Security.SecurityElement
A SecurityElement instance that contains an XML-encoded representation of the security object, including state information.

Implements

ISecurityEncodable.ToXml()

The ToXml method creates a SecurityElement instance to XML-encode a representation of the DnsPermission instance, including state information.

Use the FromXml method to restore the state information from a SecurityElement instance.

The following example creates an XML encoding of a DnsPermission instance.

public void useDns() {

   // Create a DnsPermission instance.
   DnsPermission permission = new DnsPermission(PermissionState.Unrestricted);

   // Check for permission.
   permission.Demand();
   // Create a SecurityElement object to hold XML encoding of the DnsPermission instance.
   SecurityElement securityElementObj = permission.ToXml();    
   Console.WriteLine("Tag, Attributes and Values of 'DnsPermission' instance :");
   Console.WriteLine("\n\tTag :" + securityElementObj.Tag);
   // Print the attributes and values.
   PrintKeysAndValues(securityElementObj.Attributes);
}

private void PrintKeysAndValues(Hashtable myList) {
   // Get the enumerator that can iterate through the hash table.
   IDictionaryEnumerator myEnumerator = myList.GetEnumerator();
   Console.WriteLine("\n\t-KEY-\t-VALUE-");
   while (myEnumerator.MoveNext())
      Console.WriteLine("\t{0}:\t{1}", myEnumerator.Key, myEnumerator.Value);
   Console.WriteLine();
}
public:
   void useDns()
   {
      // Create a DnsPermission instance.
      DnsPermission* permission = new DnsPermission(PermissionState::Unrestricted);

      // Check for permission.
      permission->Demand();
      // Create a SecurityElement Object* to hold XML encoding of the DnsPermission instance.
      SecurityElement*  securityElementObj = permission->ToXml();
      Console::WriteLine(S"Tag, Attributes and Values of 'DnsPermission' instance :");
      Console::WriteLine(S"\n\tTag : {0}", securityElementObj->Tag);
      // Print the attributes and values.
      PrintKeysAndValues(securityElementObj->Attributes);
   }

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

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

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

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