DnsPermission Constructor
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DnsPermission Constructor (PermissionState)


Creates a new instance of the DnsPermission class that either allows unrestricted DNS access or disallows DNS access.

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

public DnsPermission(
	PermissionState state


Type: System.Security.Permissions.PermissionState

One of the PermissionState values.

Exception Condition

state is not a valid PermissionState value.

If state is Unrestricted, the DnsPermission instance passes all demands. If state contains any other value, the DnsPermission instance fails all demands.

The following example creates an instance of the DnsPermission class.

public void useDns() {

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

   // Check for permission.
   // 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.

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

.NET Framework
Available since 1.1
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