[RESOLVED] reference a control on a tabpage

[jmcilhinney]

Yes, you should have been more specific. You should always give the full story from the start.

Any time you get a NullReferenceException, the first thing to do is to establish which reference is null. In your case you need to determine whether this:

Form1.TabControl1.TabPages(GetPageName)

is Nothing or this:

Form1.TabControl1.TabPages(GetPageName).controls(GetQName)

is Nothing. If you don't actually know what problem you're trying to solve then it can make it difficult to solve it.

On an unrelated note, you're doing something there which, while legal, is very poor practice. NEVER, EVER declare anything without a type. What are these supposed to be:

        Dim NewTop
        Dim QTop

If they're supposed to be Integers then declare tham as such. Otherwise they're both type Object regardless of what you assign to them. You obviously have Option Strict Off, which I suggest you set to On immediately. Option Strict On would not allow you to do things like declare variables without types.