private void Save_Click(object sender, EventArgs e)
        {
            ClassAttendence CA = new ClassAttendence();

            CA.Edit(globalindex, AttendenceDatepicker.Value);
            AttendenceDatepicker.ResetText();
            Attendence_Load(sender, e);
        }
 private void ADD_Click(object sender, EventArgs e)
 {
     try
     {
         ClassAttendence CA = new ClassAttendence();
         CA.ADDAttendence(AttendenceDatepicker.Value);
         MessageBox.Show("Data has been added successfully");
         AttendenceDatepicker.ResetText();
         Attendence_Load(sender, e);
     }
     catch (Exception ex)
     {
         MessageBox.Show("please enter valid data,Dat insert fail");
     }
 }