In C#,I know the way to get: void EnsureRowVisible(DataGrid grd, int Row) { int FirstVisibleRow = (int)grd.GetType().GetField("m_irowVisibleFirst", BindingFlags.NonPublic|BindingFlags.GetField |BindingFlags.Instance).GetValue(grid); int LastVisibleRow = (int)grd.GetType().GetField("m_irowVisibleLast", BindingFlags.NonPublic|BindingFlags.GetField|Bindi ngFlags.Instance).GetValue (grid); //grid is the visible datagrid control }