Export (0) Print
Expand All

DnsPermissionAttribute Constructor

Initializes a new instance of the DnsPermissionAttribute class with the specified SecurityAction value.

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

public DnsPermissionAttribute(
	SecurityAction action
)

Parameters

action
Type: System.Security.Permissions.SecurityAction
One of the SecurityAction values.

ExceptionCondition
ArgumentException

The action parameter is not a valid SecurityAction.

The SecurityAction value that is passed to this constructor specifies the allowable DnsPermissionAttribute targets.

The following example uses DnsPermissionAttribute to apply declarative security to a custom class.


//Uses the DnsPermissionAttribute to restrict access only to those who have permission.
[DnsPermission(SecurityAction.Demand, Unrestricted = true)]
public class MyClass{

public static IPAddress GetIPAddress(){
     IPAddress ipAddress = Dns.Resolve("localhost").AddressList[0];
     return ipAddress;
}
public static void Main(){
try{
     //Grants Access.
     Console.WriteLine(" Access granted\n The local host IP Address is :" + 
                                  MyClass.GetIPAddress().ToString());
}
// Denies Access.
catch(SecurityException securityException){
     Console.WriteLine("Access denied");	
     Console.WriteLine(securityException.ToString());
}


.NET Framework

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

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

Community Additions

ADD
Show:
© 2015 Microsoft