[DevExpress] GridView Column CheckBox로 변환

sQuery = String.Format("EXEC [dbo].[spBaseMAC_Master]  2, '', '', '', '', '', '', ''");
DT = GV.DB.GetDataTableSelectQuery(GV.sQuery);                    
gridControl1.DataSource = DT;
// 사용 법
GVColumnCheckEditChange(gridView1.Columns["삭제여부"]);
GVColumnCheckEditChange(gridView1.Columns["A-L사용"]);
GVColumnCheckEditChange(gridView1.Columns["B-L사용"]);
GVColumnCheckEditChange(gridView1.Columns["C-L사용"]);
// 변환 함수
private void GVColumnCheckEditChange(DevExpress.XtraGrid.Columns.GridColumn _Columns)
{
	DevExpress.XtraEditors.Repository.RepositoryItemCheckEdit selectnew = new DevExpress.XtraEditors.Repository.RepositoryItemCheckEdit();
	_Columns.ColumnEdit = selectnew;
	selectnew.NullText = "";
	selectnew.ValueChecked = "Y";
	selectnew.ValueUnchecked = "N";
	selectnew.ValueGrayed = "-";
}