Hello Matt,

I attached a little modified sample where the bug is reproduced: there's now a textbox at the top of the window that filters the list by person name.

To reproduce the bug:

1. Enter "1" into the search field and see the filter working.
2. Clear the search field.
3. Edit any cell and cancel it.
4. Try filtering once more and see the exception being thrown.
5. Edit the same cell again and commit modifications with Enter.
6. Try filtering and see it working fine once again.

Also, the search field always loses focus when the collection is refreshed, because xamGrid steals it's focus when the active cell is changed. 

HI,

 I am reviewing your new sample and steps.

Sincerely,
Matt
 Developer Support Engineer

HI,

 I reviewed your sample and made the following code changes.
 I wired up the CellExitingEditMode event

 private void xgrid1_CellExitingEditMode(object sender, Infragistics.Controls.Grids.ExitEditingCellEventArgs e)
        {
            if (e.EditingCanceled)
            {
                vm.LCV.CommitEdit();
            }
        }
 

 


 

 

This resolved the issue

Matt
Developer Support Engineer

Thank you! This helped a lot!