private bool IsChecked(GrapeCity.Win.MultiRow.Row row) => Convert.ToBoolean(row["celCheck"].Value);
private void SetRowCheckState(GrapeCity.Win.MultiRow.Row row, int check) => row.Cells["celCheck"].Value = check;
private Department ConvertRowToDepartment(GrapeCity.Win.MultiRow.Row row) => row.DataBoundItem as Department;
private Category ConvertRowToCategory(GrapeCity.Win.MultiRow.Row row) => row.DataBoundItem as Category;
private Section ConvertRowToSection(GrapeCity.Win.MultiRow.Row row) => row.DataBoundItem as Section;