Windows Forms: How to extend a button?

Question

How can I extend a Button?

I want a Button that has an additional property IsSwitchOffable.

Do I have to write an extra custom control?

EDIT: I want that the button is usable as a standard WindowsFormsButton.

This includes that I can add the button at design time!

Answer 1

Extending a button control is no different then extending any class in C#. Simply do the following:

class ToggleButton : Button {
// Add your extra code
}

Answer 2

You need to create a class that inherits the System.Windows.Forms.Button class and adds your property and associated behavior.

After compiling your project, your new class will appear in the toolbox.

Answer 3

I know this is old and has been answered - however, Why make life difficult?

Each control has a Tag property which you can easily set to IsSwitchedOffable - or better English CanBeDisabled

Far easier.