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Basic validation on an ASP.net page

Posted on 2003-03-19
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Last Modified: 2006-11-17
I have a ASP.net page that offers the user 3 radio buttons. Alongside each radio button is a list box of values. The idea is that the user may select a radio button choice (they are mutually exclusive). Having selected a radio button, they MUST then select a value from the corresponding list box - they should not be allowed to select the radio button and then not select a value from the list box that's alongside.

How can I put validation in place to ensure this happens ?

I'm using VB.net as the code behind language.

tia
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Question by:ggale
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by:Arthur_Wood
ID: 8166218
you can add a Custom Validator control to your page, and then supply the nexessary Sub to actaully carry out the validation.  Check in the Help System for the Custom Validator control on the ASP.NET page.

You will find the Custom Validator in the Toolbox
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Accepted Solution

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krisme77 earned 1000 total points
ID: 8168690
you could assign a validator each to the list boxes and make them inactive initally. You could then check the radio buttons for a selection and then make the corresponding listbox validator active.
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