In addition, learn how to use the Custom Validator when one of the standard validators does not meet your need.
Both server and client side validation options are shown.
One of the most common uses that you will find for creating your own controls is for individualizing input masks and business rules for specific types of identifiers used in your applications across your enterprise.
A good example would be an employee number that is formatted in a special way and must be verified against a table in a database to make sure it exists.
These properties include all of the common properties you see on normal controls, such as the accessibility properties, backcolor, forecolor, anchoring, and docking.