Hai friends here I am writing the code for creating a Custom validator for Radio button.
Please check it out and try.

Write a javascript function in .aspx page


function ValidateRadiobutton(oSrc, args)
{
if(document.getElementById("").checked ==

false&&document.getElementById("") .checked ==false)
{
args.IsValid = false;
}
}

Add custom validator
===============

ClientValidationFunction="ValidateRadiobutton" runat="server"
ErrorMessage="Select Active/Inactive"
CssClass="ValidationMessage" ValidationGroup="status" Font-Bold="True" ForeColor="Lime">

Any doubts mail me at: radhekrsna@gmail.com

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