Custom user-defined controls

You can define two types of custom controls:

• User control - A collection of individual controls in a container. For example, you might create a user control called "Address" that includes text box controls for user entry of name, street address, and city; a combo box control that allows the user to select the state; and accompanying label controls that identify these fields.
• Inherited control - A control derived from another control. You can set properties and events as appropriate for your purposes. For example, you might created an inherited control called ContactButton (derived from a standard button control) for which you specify the size and color, the text "Contact," and event logic that responds to a button click by launching a pre-addressed e-mail message.