Possible values for the Modifiers property

Based on the table, we could have used either the Protected or Protected Internal setting here. Since there is no reason to prevent derived forms in external assemblies from modifying the Panel control, the Protected value will work just fine.

Before we move on, notice that our subclasses will not be able to add Click handlers for our private buttons. The OK and Cancel buttons have assigned actions due to their DialogResult setting. When either button is clicked, the dialog is deactivated and the appropriate value returned. We will require a way to save our modified settings when the OK button is clicked, and we need a way to perform an action when the Reset button is clicked.

As a solution, let’s add two protected methods that child classes can implement to handle these situations. We will create a SaveSettings method to store the modified values, and a ResetSettings method to handle a click of the Reset button. This continues our previous steps.

CREATE OVERRIDABLE METHODS FOR OK AND RESET BUTTONS