private void cmdAdd_Click(object sender, EventArgs e)
 {
     server.Service1 myserver = new server.Service1();
     myserver.AddAttendance(cmbStudents.Text, txtPerc.Text, txtSec.Text, txtSbj.Text, myserver.getLoggedInTeacher().name, txtSemes.Text);
     MessageBox.Show("Attendance has been added");
 }