private void BtnLogon_Click(object sender, System.EventArgs e)
 {
         bool passwordVerified = false;
         try
         {
             ReportServerProxy server = new ReportServerProxy();
             server.Url = AuthenticationUtilities.GetWebServiceUrl();
          // server.LogonUser(TxtUser.Text, TxtPwd.Text, null);

             FormsAuthenticationTicket ticket;
             string encTicket;
             
             ticket = new FormsAuthenticationTicket( 1 , TxtUser.Text, DateTime.Now,   DateTime.Now.AddMinutes( 20 ), false, strRoles);
             encTicket = FormsAuthentication.Encrypt(ticket);
             Response.Cookies["UrlAuth"].Value = encTicket;
             Response.Cookies["UrlAuth"].Path = "/";
             Response.Cookies["UrlAuth"].Expires = DateTime.Now.AddMinutes( 20 );
             

             passwordVerified = true;

         }
         catch(Exception ex)
         {
            lblMessage.Text = ex.Message;
            return;
         }
         if (passwordVerified == true )
         {
             lblMessage.Text = "Logon successful: User is authenticated";
             string redirectUrl = Request.QueryString["ReturnUrl"];      
                 if (redirectUrl != null)
                     HttpContext.Current.Response.Redirect(redirectUrl, false);
                 else
                     HttpContext.Current.Response.Redirect(
                        "./Folder.aspx", false);
             
         }
         else
         {
            lblMessage.Text = "Invalid username or password";
         }
      }
   }