private void btnLogin_Click(object sender, EventArgs e)
 {
     string userId = string.Empty;
     objBll = new WarringtonBll.WarringtonBll();
     if (objBll.UserIsAuthenticated(txtUserId.Text.Trim(), txtPassword.Text.Trim(), out userId))
     {
         Utility.SetSessionValue(Constants._USERISLOGGEDIN, true);
         Utility.SetSessionValue(Constants._LOGINUSERID, userId);
         Response.Redirect(GetPageName());
     }
     else
     {
         ScriptManager.RegisterStartupScript(this, this.GetType(), "msg", "alert('The Phone no and Pin you entered don't match. User authentication fails..')", true);
     }
 }