Klaus, thanks for your advice, I'm new to all this but let's try again.
I've created a list and placed it on a tab host:
ListView1.Initialize("Activity_Create")
ListView1.RemoveView()
TabHost1.AddTab2("List of Articles", ListView1)
I also added some items...
Then I created click event:
Sub ListView_ItemClick (Position As Int, Value As Object)
Activity.Title=value
End Sub
...and nothing happens?