protected void uiGridViewStudentsAbsence_RowCommand(object sender, GridViewCommandEventArgs e)
 {
     if (e.CommandName == "EditReports")
     {
         int id = Convert.ToInt32(e.CommandArgument.ToString());
         CurrentAttendanceReport = id;
         DBLayer db = new DBLayer();
         DataSet ds = new DataSet();
         ds = db.GetMonthlyAttendanceReport(id);
         if (ds.Tables[0].Rows.Count > 0)
         {
             uiTextBoxDay.Text = string.Format("{0:dd/MM/yyyy}", DateTime.Parse(ds.Tables[0].Rows[0]["Date"].ToString()));
         }
         uiPanelCurrentStudents.Visible = false;
         uiPanelCurrent.Visible = true;
     }
     else if (e.CommandName == "DeleteReports")
     {
         int id = Convert.ToInt32(e.CommandArgument.ToString());
         CurrentAttendanceReport = id;
         DBLayer db = new DBLayer();
         db.DeleteMonthlyAttendanceReport(id);
         uiPanelCurrentStudents.Visible = false;
         uiPanelCurrent.Visible = true;
         BindData();
     }
 }