>I think you're missing a this._inventoryList.Clear() before the foreach loop. Try also resetting cboItems.DataSource to null before the foreach loop.
>
>>The first time the selected item is 'Select Category', but then it could be any category. However, it seems like I can only select category once to get the Items displayed correctly - every time I select anyhing else it remains the same - it should clear the Items combo value and allow me to select items for the selected category - this part I can not get to work as hard as I already tried.
>>
>>I'll move the handler to the private method - good point.

Setting DataSource to null did the trick, thanks, I was close, but could not figure this out on my own.