asp.net - the page post back to the inital state when data loads from the drop down list -

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i have page named loginsecurity_test.aspx.there 3 radio buttons on when user selects 1 button 1 login form displays.for example when select individual user button form displayed.i have select customer number drop down list.when select customer number page post , instead of taking form again go inital stage 3 radio buttons being displayed.the language vb.net radio button functionality using javascript

at guess, need check page.ispostback in page load event can track state of page.


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