Hi,

Thank for your reply.

I'm using Infragistics 2012 vol1, I have attached a simple project.

If you try to add a new row at the grid you can view the problem!

Thanks

Thanks to your advice I solved my problem!

Thanks!

Hi,

Okay, I think I was right, this is a timing problem. You are using the AfterCellUpdate event to set the ValueList on the second column. The problem is that this event doesn't fire until after the second cell (proxy) is already in edit mode. Setting the ValueList here would end up changing the editor used by the column and you can't change the editor while the cell is already in edit mode.

In fact, it's worse than that. You really can't change the editor once the RowEditTemplate is displayed, because it has already created the editor proxy.

So what you need to do here is let the grid know that this column will be using a ValueList up front. Essentially, the problem is that the grid doesn't know this column will eventually be using a ValueList, so it's using a normal text editor for the cell and by the time the RET is displayed, it's too late the change it.

So all you have to do is assign an empty ValueList to the column initially and it works fine.

        private void ultraGrid1_InitializeLayout(object sender, InitializeLayoutEventArgs e)
        {
            ValueList vl = new ValueList();
            e.Layout.Bands[0].Columns["Column2"].ValueList = vl;
        }