private void activityUpdateBtn_Click(object sender, EventArgs e) { if (activityIdBox.Text == "" || activityDescBox.Text == "" || activityStudBox.Text == "" || activitySuperBox.Text == "") { // show a message if a user did not enter a value MessageBox.Show("Please enter a value for all fields before clicking on Update", "", MessageBoxButtons.OK, MessageBoxIcon.Information); } else { // reading data from the textboxes int id = int.Parse(activityIdBox.Text); string desc = activityDescBox.Text; int numberOfStudent = int.Parse(activityStudBox.Text); int numberOfSupervisor = int.Parse(activitySuperBox.Text); // passing data to the UI layer SomerenUI.uppdateActivity(id, desc, numberOfStudent, numberOfSupervisor); // show a messagebox after clicking on update button MessageBox.Show("You have successfully updated a activity!!\n" + "Enter Refresh the list to see the changes", "", MessageBoxButtons.OK, MessageBoxIcon.Information); } // clearing data from textboxes activityIdBox.Clear(); activityDescBox.Clear(); activityStudBox.Clear(); activitySuperBox.Clear(); }