How to: validate CheckBoxList control in ASP.NET?

[Guest]

The MSDN documentation states that it is not possible to validate the
CheckBoxList server control in ASP.NET using the RequiredFieldValidator.

Is it possible to do this via the CustomValidator using client-side script?
I have attempted to write javascript code, but cannot pull the value of the
argument.

Any ideas? Thanks.

 

[Codex Twin]

There is no built-in CheckBoxList validator, so you will have to build your
own.
This page explains one way of doing it:
http://www.dotnetjunkies.com/Article/ECCCD6A6-B312-41CB-87A1-10BB5D641D20.dcik

although the client-side script generation shown in it can be greatly
improved by using an external script.

as documented here:
http://icelava.net/components/RequiredCheckBoxListValidator.aspx

HTH
cT