How do I prevent multiple form submission in .NET MVC without using Javascript?

Question

I want to prevent users submitting forms multiple times in .NET MVC. I\'ve tried several methods using Javascript but have had difficulties getting it to work in all browser

Answer 1

This works on every browser

 document.onkeydown = function () {
        switch (event.keyCode) {
            case 116: //F5 button
                event.returnValue = false;
                event.keyCode = 0;
                return false;
            case 82: //R button
                if (event.ctrlKey) {
                    event.returnValue = false;
                    event.keyCode = 0;
                    return false;
                }
        }
    }

Answer 2

Use the Post/Redirect/Get design pattern.

PS: It looks to me that the answer by Jim Yarbro could have a fundamental flaw in that the __RequestVerificationToken is stored in the HttpContext.Current.Session["LastProcessedToken"], this value will be replaced when a second form is submitted (from say another browser window), at this point it is possible to re-submit the first form and it won’t be recognized as a duplicate submission? For the proposed model to work wouldn’t a history of __RequestVerificationToken be required(?), this wouldn’t be feasible.

Answer 3

what if we use $(this).valid()

 $('form').submit(function () {
            if ($(this).valid()) {
                $(this).find(':submit').attr('disabled', 'disabled');
            }
        });

Answer 4

I've tried several methods using Javascript but have had difficulties getting it to work in all browsers

Have you tried using jquery?

$('#myform').submit(function() {
    $(this).find(':submit').attr('disabled', 'disabled');
});

This should take care of the browser differences.

Answer 5

Dont reinvent the wheel :)

Use the Post/Redirect/Get design pattern.

Here you can find a question and an answer giving some suggestions on how to implement it in ASP.NET MVC.

Answer 6

You can also pass some sort of token in a hidden field and validate this in the controller.

Or you work with redirects after submitting values. But this get's difficult if you take heavily advantage of ajax.