protected void updateButton_Click(object sender, EventArgs e) { string message = null; if (!CheckInputValues()) { return; } Client clientObject = new Client(); clientObject.Id = clientIdDropDownList.SelectedItem.Text; clientObject.CompanyName = companyNameTextBox.Text; clientObject.ContactPerson = contactPersonTextBox.Text; clientObject.ContactDate = Convert.ToDateTime(contactDateTextBox.Text); clientObject.Address = addressTextBox.Text; clientObject.PhoneNo = phoneNoTextBox.Text; clientObject.Email = emailTextBox.Text; try { ClientGateway ClientGatewayObject = new ClientGateway(); message = ClientGatewayObject.UpdateClient(clientObject).ToString(); if (message == "True") { message = "Data has been updated successfully"; } } catch (SqlException sqlExceptionObj) { errorLabel.Text = sqlExceptionObj.Message; } catch (Exception exceptionObj) { errorLabel.Text = exceptionObj.Message; } successLabel.Text = message; errorLabel.Text = ""; }