Web Forms :: Validate Textbox After Checkbox Has Been Checked?

Mar 7, 2010

I have the following problem...

I'm developing an an asp.net 2 application in c#. This site is being built with accessibility in mind, and as such I need a to build a registration from that validates using server side scripts and
not use client side validation.I need to validate a textbox (whether any text has been entered), if a check box has been checked.

Bear in mind that I can't use any clientside code such as javascript postback that is wired into the <asp:CheckBox /> control.

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