Hi, A bit weird this.... I have a webcombo that displays fine. I've 'code-behind' placed a number of rows of data into it and they display well: [VB] oDate = Now() For i = 0 To 12 oRow = New Infragistics.WebUI.UltraWebGrid.UltraGridRow oCell = New Infragistics.WebUI.UltraWebGrid.UltraGridCell oCell.Text = Format(oDate, "MMMM, yyyy") oRow.Key = oCell.Text 'So that the code below can use the 'FromKey' oRow.Cells.Add(oCell) Me.WC_List.Rows.Add(oRow) oDate = DateAdd(DateInterval.Month, -1, oDate) Next Odd thing is that when I create a SelectedRowChanged event in my VB code: Private Sub WC_List_SelectedRowChanged(ByVal sender As Object, ByVal e As Infragistics.WebUI.WebCombo.SelectedRowChangedEventArgs) Handles WC_List.SelectedRowChanged End Sub the web page becomes totally unresponsive [ie the code has gone off into the long grass somewhere...... ]. Tracing the code [with a line or two of trivial code in the subroutine works fine until the 'end sub' point - then it disappears.... If I remove these two lines, all is OK. Any Ideas? D.