you could create a flag such as Dim bIsCodeNeedToRunTrue As Boolean and set to true when you want the code in the cobbobox_selected_indexchanged to be executed and to false when not.
or you could transfer the code from the cobbobox_selected_indexchanged to click() and this way you can control if you want to the code need to be run or no, if you change the combo by mouse the code will run , if you change the code programming, you can issue
ComboBox.Text = ds.tables(0).rows(0).item(0)
ComboBox.click() ' or remove this line for not executing the code
hth
Unsolved 
