I am learning how to create custom controls in VB .NET 2003, but I am stuck with a problem.

I created the control, it is a textbox that just limits the types of input, nothing fancy (found a tutorial online and just adapted it to my purposes). I created a windows application to test it, added it to the toolbox and dropped it on the form. When I tried to run the program I get the error StrictTextBox.StrictTexBoxControl not defined.

If it was a variable or something, I would know how to fix it, but I have never created my own controls before, so I am not sure what to do. I did a search in the forums here, but wasn't able to find a solution.

How can my control not be defined if it was added to the toolbox and dropped on the form? How do I define it?

Thank you for your help.