public customDataGridShippingLog() { InitializeComponent(); editing = false; MySQLHandle = new MySQL(GlobalVar.sqlhost,GlobalVar.sqlport,GlobalVar.sqldatabase,GlobalVar.sqlusername,""); sqlReader = MySQLHandle.Connect(); autoCompleteCollection = MySQLHandle.returnAutoComplete(); for (int rowNumber = 0; rowNumber < dataGrid.Rows.Count; rowNumber++) { dataGrid.Rows[rowNumber].HeaderCell.Value = (rowNumber + 1).ToString(); } }