I have a WinGrid that has two columns.  The first column contains a ValueList.  On selecting an item from the value list I would like to change that rows second column to a new style (example, DropDownCalendar). 

I am able to accomplish this, and correctly select a date from the DropDownCalendar afterwards, with the following code:

Private Sub ugMyUltragrid_CellListSelect(ByVal sender As System.Object, ByVal e As    Infragistics.Win.UltraWinGrid.CellEventArgs) Handles ugCustomFilters.CellListSelect

  Me.ugMyUltragrid.ActiveRow.Cells(1).Style = ColumnStyle.DropDownCalendar

End Sub

 With the following code I am able to display the DropDownCalendar, however, I get a "The given key was not present in the dictionary" if I select a date:

Private Sub ugMyUltragrid_CellListSelect(ByVal sender As System.Object, ByVal e As Infragistics.Win.UltraWinGrid.CellEventArgs) Handles ugCustomFilters.CellListSelect

 Dim cs As ColumnStyle = ColumnStyle.DropDownCalendar
 Me.ugCustomFilters.ActiveRow.Cells(1).Style = cs

End Sub

Any reason why this is occuring? 

Note:  We are currently using v6.1 of the UltraWinGrid.

Thank you,

Mark