private void Reset()
{
Exam.ClearSelection();
dd.ClearSelection();
TxtFDate.Text = string.Empty;
//TxtTDate.Text = string.Empty;
dd1.ClearSelection();
section.ClearSelection();
TxtStartTime.Text = string.Empty;
TxtMaxMarks.Text = string.Empty;
TxtEndTime.Text = string.Empty;
}