When to add a Component Class vs User Control?

Question

I have a general idea, and there are some obvious cases, but there are also some gray areas for me - when is it best to use to extend from a component and when is it best to cre

Answer 1

In WPF and Windows Forms, both, the main difference is that a UserControl is meant to be a collection of controls - a reusable, single object "composed" from multiple controls themselves.

You'd impelemnt a Component/CustomControl/Control instead of a UserControl if you are making a single, primitive control with new behavior, instead of making a "control" that's composed of smaller controls. Component usually is a non-visual behavior, where a CustomControl/Control is usually for a visual control.