It's been a while since I posted anything here, but please forgive me - I'm in the middle of finishing every project I'm currently working on before I'm gone for my internship (hooray!). Since there's a lot to be done, this time I'll leave just a short note on some weird problem I've just encountered.
So, not to prolong too much, here's the thing:
If you have encountered a "The specified cast is not valid" when running tests (I'm using NUnit) that have anything to do with TextBox AutoCompleteCustomSource (namely, when you add something to the autocomplete source via .Add(string) method), mark your test with annotation RequiresSTAAttribute. No one explained what is wrong, but the solution works. Maybe I'll investigate what's going on when I'm over and done with all of my current engagements (read it as: never ;-)).
By the way, I'm using .NET 2.0, but it may still be a problem in higher versions.
