How does IsPostback technically work?

Question

I\'m currently having a strange issue whereby all browsers except from Google Chrome are registering a call to IsPostback within a Page_Load event as true when I click an as

Answer 1

Postback actually works fairly simply by submitting the form to itself (for the most part). The javascript code is actually put on your page:

function __doPostBack(eventTarget, eventArgument) {
    if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
        theForm.__EVENTTARGET.value = eventTarget;
        theForm.__EVENTARGUMENT.value = eventArgument;
        theForm.submit();
    }
}

Marks answer shows you the server side code that is run.