I found the way for my problem. Thanks all.

Is solved now.

Thanks for all guidance ^^

 Hi Mike,

I try to get the updated cell with AfterCellUpdate and assign it into variable as part of my update statement, but it execute the update until the application "no respone". Please point out my mistake for better improvement.

Thank you very much!

private void ugLisfOfVolMaint_AfterCellUpdate(object sender, Infragistics.Win.UltraWinGrid.CellEventArgs e)

        {   // AfterCellUpdate gets fired after the cell's value has been changed in the UltraGrid.

            const string METHOD_NAME = "mnuShowStructure_Click";           

            Cursor oldCursor = Cursor.Current;

            Cursor.Current = Cursors.WaitCursor;

            string strSQL, svolID = "", svolLine = "", srouteID = "",sheader ="", svalue ="";

            try

            {

                svolID = ugLisfOfVolMaint.ActiveRow.Cells["vol_id"].Value.ToString();

                svolLine = ugLisfOfVolMaint.ActiveRow.Cells["vol_line_id"].Value.ToString();

                srouteID = ugLisfOfVolMaint.ActiveRow.Cells["Route_ID"].Value.ToString();

                sheader = e.Cell.Column.ToString();

                svalue = e.Cell.Value.ToString();

                strSQL = "update ras_vol_wafer  set " + sheader + " = '" + svalue + "', last_update =  sysdate " +

                         " where vol_id = '" + svolID + "' and vol_line_id = '" + svolLine + "' and rrth_id = '" + srouteID + "' ";

                MyDBConn.ExecuteNonQuery(ModGloVariable.RasmusConn, CommandType.Text, strSQL);

            }

            catch (Exception ex)

            {

                ModProc.ShowSysErrMsg(ex.Message, METHOD_NAME, CLASS_NAME);

            }

            finally

            {

                Cursor.Current = oldCursor;

            }

        }

UltraDataSource doesn't have any back end, it only exists in the client. So it does not track changes.

But I think I am probably not understanding your question. Leaving a cell in the grid will automatically write any changes to the data source. This depends on the UpdateMode property, but updating on a cell change is the default.

I don't think I understand your question or what you are trying to do.

Im using UltraWinDataSource