Hi Maya,

Thanks for your reply, Please find my response below

1. Is the DropDownList nested inside the cell?

          Ans : I have bound the dropdownlist to the cell at serverside code (column type to dropdownlist)

        2.  Could you share the logic in the cell updating event that checks whether the item is already selected?

          function uw_Exp_AfterCellUpdateHandler(gridName, cellId) {
            var cell = igtbl_getCellById(cellId);
            var colkey = cell.Column.Key;

            var curRowIndex = cell.getRow().getIndex();
            var rows = igtbl_getGridById(gridName).Rows;
            var curLine = rows.getRow(curRowIndex);

            var curGridName = "<%=uw_Exp.ClientID%>";
            var curCellId = cellId.substring(cellId.lastIndexOf("_") + 1);

            var grd = igtbl_getGridById(curGridName);
            var actRow = igtbl_getActiveRow(curGridName);

            var rowIndex = actRow.Element.id;
            var curRowId = rowIndex.substring(rowIndex.lastIndexOf("_") + 1);

            var grdRws = grd.Rows;
            var rws = grdRws.length;

            actRow.getCell(0).setValue(eval(curRowId) + 1);

            if (colkey == "Item_Name") {
                if (actRow.getCellFromKey('Item_Name').getValue() != null) {
                    for (i = 0; i <= rws - 1; i++) {
                        if ((curRowId != i) && (actRow.getCellFromKey('Item_Name').getValue() == grdRws.getRow(i).getCellFromKey('Item_Name').getValue())) {
                            alert('This Item already exists');
            
                            
                    }

                }
            }
            }
            }

             3. Which version of our control are you currently using?

                  11.1

I'm glad you have managed to resolve your issue.

Let me know if you have any other questions or concerns.

The Problem Is in AfterCellUpdationEvent. So We find and solved the problem.  Thanks For Your Team to  interest  Regarding This Issue. 

Hi,

I'm just checking if you still need assistance with the matter.

Hello,

I am still unable to reproduce the issue you have described. Is it possible for you to provide me with a small running sample that I can test and debug on my side?

Thank you.

We are using ultrawebgrid.

1. The Values Will Bind Into Ultrawebgrid  in Server Side(Using Stored Procedure) On Page Load.

2. There Are 6 Column in The Ultawebgrid.(sno,item,price,qty...etc)

3. The Column Type of item is DropDownList.

4. We are Bind the Values separately For Ultrawebgrid and DropDownList. And the stored Procedure Also Different. 

5. It is must that the item(That is Binded in DropDownlist Of ultrawebgrid) can't be selected more than once.(That is assume that the item column have records like item1,item2,item3,item4 then if item1 selected in first row of ultrawebgrid it will not be allowed to select again).

6. We Prevent That by using afterCellUpdation by prompting 'This item already Exist'.And this works fine.

 Our Problem is after delete one row( Say for example we load item1,item2,item3. And we delete a row item 1 by pressing deletekey in the keyboard)

if we load another item(item4,item6) That also prompt 'This item already Exist'. Kindly understand and solve our problem.