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I have a radioButtonList on an asp.net page, after use clicked 'next' button, I
want to check did user select an answer or not, if yes, jump to next page, if
no, alert user they need to answer it before they click 'next' button. How can I
do this?
Thanks.
want to check did user select an answer or not, if yes, jump to next page, if
no, alert user they need to answer it before they click 'next' button. How can I
do this?
Thanks.