public override string ToString ()
{
StringBuilder sb = new StringBuilder ();
sb.AppendFormat ("Frame: {0}{1}", _method, Environment.NewLine);
sb.AppendFormat ("\tAppDomain: {0}{1}", Domain, Environment.NewLine);
sb.AppendFormat ("\tAssembly: {0}{1}", Assembly, Environment.NewLine);
if (_assert != null)
sb.AppendFormat ("\tAssert: {0}{1}", _assert, Environment.NewLine);
if (_deny != null)
sb.AppendFormat ("\tDeny: {0}{1}", _deny, Environment.NewLine);
if (_permitonly != null)
sb.AppendFormat ("\tPermitOnly: {0}{1}", _permitonly, Environment.NewLine);
return sb.ToString ();
}