Focus issue on Form Load

Question

I have an ActiveX control (written in VB 6.0 or C++ maybe) that we are using as an AxInterop in a C# WinForms program. It is very much like a text box but with some special logi

Answer 1

Are you sure the component is visible when you try to give it focus?

If you are trying to do the focussing in a Form.Load event handler, try moving it to the Form.Shown handler instead, or perhaps Control.Enter.

The difference in behaviour could be down to a timing issue. Have a look on MSDN for the order in which events occur on an opening form for more ideas.