Combo in UltraGrid throws Key not found error

Epicor ERP 10
1

Epicor 10.1.400.18
Combo box populated and hid to populate grid column. When you tab into the combo box in the grid and hit the first letter of one of the combo box values it throws the error. After you press okay on the error it inserts the correct value. There are only three values to choose from “PASS” “FAIL” and “N/A”. As soon as you press ‘p’ or “P” it throws the error. If you click the down arrow on the combo box in the grid then press “p” or “P” it works. So, does than mean the combo box needs to show the list or expand when it gets focus to make this work? Or is there some property I am missing? Here is the beginning of the error:

Application Error

Exception caught in: Infragistics4.Shared.v12.2

Error Detail

Message: Key not found: ‘’
Parameter name: key
Program: Infragistics4.Shared.v12.2.dll
Method: GetItem

Client Stack Trace

at Infragistics.Shared.KeyedSubObjectsCollectionBase.GetItem(String key)
at Infragistics.Win.UltraWinGrid.ColumnsCollection.get_Item(String key)
at Infragistics.Win.UltraWinGrid.CellsCollection.GetItem(String key)
at Infragistics.Win.UltraWinGrid.CellsCollection.get_Item(String key)

2

This seems to work:

private void ReadyGrid_AfterCellActivate(object sender, System.EventArgs args)
{
// ** Place Event Handling Code Here **
ReadyGrid.ActiveCell.DroppedDown = true ;
}