I'm creating an excel spreadsheet using Infragistics 10.3. One of the requirement is to display and event (some text) in a cell with the cell backcolor set to green. If the event is cancel the client still wants it to be displayed except with a single diagonal black stripe through the cell. This is easy to do in excel by using the diagonal border however through the 

Worksheet.Rows(i).Cells(j).CellFormat

 class there is no diagonal border property available. I've tried using the FillPatternStyle but cannot get the desired effect. How would I go about getting a single black diagonal line through a cell?