Use the SiteMap Web server control to display a representation of a Web site's navigation structure.
Validate against values in a database for server controls by using a CustomValidator control.
Create a CustomValidator control and tie it to a custom function.
Specify the location of a validation error message for server controls.
Specify the layout for in-place messages on server controls.
Disable validation for server controls.
Display custom error messages for server controls.
Validate server controls programmatically.