protected void grdToDoList_RowDeleting(object sender, GridViewDeleteEventArgs e)
        {
            // Repair Gridview, if the gridview is edition mode
            if (grdToDoList.EditIndex >= 0)
            {
                grdToDoList.UpdateRow(grdToDoList.EditIndex, true);
            }

            // Delete repairs
            int toDoId = (int)e.Keys["ToDoID"];
            int refId = (int)e.Keys["RefID"];

            ToDoListInformationActivityInformation model = new ToDoListInformationActivityInformation(toDoListInformationTDS);

            // Delete repair
            model.Delete(toDoId, refId);

            // Store dataset
            Session["toDoListInformationTDS"] = toDoListInformationTDS;
        }