You are designing an ASP.NET Web application that allows users to type a value in a text
box. The application must function with JavaScript disabled. You need to design a method
for using a Web service to validate the user-typed value before the form is processed.
Which two actions should you recommend? (Each correct answer presents part of the
solution. Choose two.)

A.
Use a CustomValidator control.

B.
Use a DynamicValidator control.

C.
Use an OnServerValidate method.

D.
Use a ClientValidationFunction method.