Ajax.BeginForm Force Full Postback

How do I force Ajax.BeginForm (MVC3, unobtrusive) to do a full postback? In MVC2 I just cleared the 'onclick' and 'onsubmit' handlers. How do I do this in MVC3? //does not work in

Solution 1:

If you are fine with modifying the unobtrusive library.. you can check in the submit event handler whether the form contains any file and if yes then do a full POST else through AJAX.

$("form[data-ajax=true]").live("submit", function (evt) {
    var clickInfo = $(this).data(data_click) || [];
    evt.preventDefault();
    if (!validate(this)) {
      return;
    }

    if ($("input[type=file]", this).val()) {
      this.submit();
    }
    else {
      asyncRequest(this, {
        url: this.action,
        type: this.method || "GET",
        data: clickInfo.concat($(this).serializeArray())
      });
    }
  });