How to show two format in GridDateTimeColumn in WinForms DataGrid (SfDataGrid)?

this.sfDataGrid.CellRenderers.Remove("DateTime");
this.sfDataGrid.CellRenderers.Add("DateTime", new GridDateTimeCellRendererExt());
 
public class GridDateTimeCellRendererExt : GridDateTimeCellRenderer
{
            protected override void OnRender(Graphics paint, Rectangle cellRect, string cellValue, CellStyleInfo style, DataColumnBase column, RowColumnIndex rowColumnIndex)
            {
                string[] date = cellValue.Split();
                SizeF size = paint.MeasureString(date[0], style.Font.GetFont());
                float height = (cellRect.Height - size.Height) / 2;
                paint.DrawString(date[0], style.Font.GetFont(), new SolidBrush(style.TextColor), cellRect.X, cellRect.Y + height);
                paint.DrawString(date[1], new Font(style.Font.Facename, style.Font.Size, FontStyle.Bold), new SolidBrush(style.TextColor), cellRect.X + size.Width, cellRect.Y + height);
            }
}