You can try handling the PrepareViewStyleInfo event of the grid to get numbered row headers.
private void gridControl1_PrepareViewStyleInfo(object sender, GridPrepareViewStyleInfoEventArgs e)
{
if (e.ColIndex == 0 && e.RowIndex > 0)
{
e.Style.Text = e.RowIndex.ToString();
e.Style.BaseStyle = "Header";
e.Style.Font.Bold = false;
}
}
Here is a small sample for reference.
http://websamples.syncfusion.com//samples/Grid.Windows/GC_RowHeaderNumbering_F77628/main.htm
Please let me know if this serve your needs.
Regards,
Nisha