WebPermissionAttribute
Specifies permission to access Internet resources. This class cannot be inherited.
                using System.Security;
using System.Security.Permissions;
namespace System.Net
{
    [AttributeUsage(AttributeTargets.Assembly | AttributeTargets.Class | AttributeTargets.Struct | AttributeTargets.Constructor | AttributeTargets.Method, AllowMultiple = true, Inherited = false)]
    public sealed class WebPermissionAttribute : CodeAccessSecurityAttribute
    {
        public string Accept {
            get {
                return null;
            }
            set {
            }
        }
        public string AcceptPattern {
            get {
                return null;
            }
            set {
            }
        }
        public string Connect {
            get {
                return null;
            }
            set {
            }
        }
        public string ConnectPattern {
            get {
                return null;
            }
            set {
            }
        }
        public WebPermissionAttribute(SecurityAction action)
            : base(action)
        {
        }
        public override IPermission CreatePermission()
        {
            return null;
        }
    }
}