[sabree]

gridView1.AddNewRow();
int newRowHandle = gridView1.FocusedRowHandle;
object newRow = gridView1.GetRow(newRowHandle);

gridView1.SetRowCellValue(newRowHandle, gridView1.Columns[0], dt.Rows[0]["ITEMCODE"]);
gridView1.SetRowCellValue(newRowHandle, gridView1.Columns[0], 1);

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ليه DataTable dt=new DataTable(); ؟