private void DateSelected(object sender, DateRangeEventArgs e)
 {
     if (!subjects.Text.Equals(string.Empty) && !BatchCode.Text.Equals(string.Empty))
     {
         var selectedDate = e.Start;
         var dataSource   = faceController.GetDayAttendenceStudentList(subjects.Text, BatchCode.Text, selectedDate);
         DataTable.DataSource = dataSource;
         faceController.GenerateReports(dataSource);
     }
     else
     {
         MessageBox.Show("Please fill the Subject and Batch code", "Warring");
     }
 }