protected void btnLogin_Click(object sender, EventArgs e) { try { clsBSAdmin obj = new clsBSAdmin(); clsAdmin clss = new clsAdmin(); clss = obj.GetByUserPassword(this.txtUserName.Text, this.txtPassword.Text); if (clss != null) { Session["AdminID"] = clss.Id; Response.Redirect("~/Admin/Default.aspx"); } else { this.lblMessage.Text = "Đăng nhập không thành công"; } } catch (Exception) { throw; } }