>>>>>If I'm looping through all the controls on a form, is there something I can check to see if it is a "valid" control, in that it can accept entry from the user? I do not want labels, containers, images, etc. I only want things like textboxes, checkboxes, combos, etc. Do they all have some property/method that I can check for?
>>>>
>>>>Value.
>>>>ControlSource.
>>>
>>>Damn. Almost. It could include buttons and stuff like that too. Maybe there is no common property/method for the controls I want, but not the others.
>>
>>GotFocus? Except you could filter out containers if you don't want to include those...
>
>What about Enabled?

Which classes you need to consider? Containers have enabled property, shapes have it too.