How do I get jQuery's Uploadify plugin to work with ASP.NET MVC?

I'm in the process of trying to get the jQuery plugin, Uploadify, to work with ASP.NET MVC.

I've got the plugin showing up fine with the following JavaScript snippet:

<script type="text/javascript">
    $(document).ready(function() {
        $('#fileUpload').fileUpload({
            'uploader': '/Content/Flash/uploader.swf',
            'script': '/Placement/Upload',
            'folder': '/uploads',
            'multi': 'true',
            'buttonText': 'Browse',
            'displayData': 'speed',
            'simUploadLimit': 2,
            'cancelImg': '/Content/Images/cancel.png'
        });
    });
</script>

Which seems like all is well in good. If you notice, the "script" attribute is set to my /Placement/Upload, which is my Placement Controller and my Upload Action.

The main problem is, I'm having difficulty getting this action to fire to receive the file. I've set a breakpoint on that action and when I select a file to upload, it isn't getting executed.

I've tried changing the method signature based off this article:

public string Upload(HttpPostedFileBase FileData)
{
    /*
    *
    * Do something with the FileData
    *
    */
    return "Upload OK!";
}

But this still doesn't fire.

Can anyone help me write and get the Upload controller action's signature correctly so it will actually fire? I can then handle dealing with the file data myself. I just need some help getting the method action to fire.

Solution

public string Upload(HttpPostedFileBase FileData) {}

is correct - the file uploaded by uploadify will get binded to FileData. No need to get into Request.Files to retrieve the file - which makes it harder to mock and test.

If your action isn't firing at all (i.e. try debugging and see if a breakpoint within the method is hit), then your issue is most likely the 'script' value - are you running under a virtual directory? If so you'll need to put the name of the directory in front. Uploadify is using an absolute path.

i.e. 'script: '/virtual_directory/Placement/Upload'

right now uploadify is sending to http://localhost/Placement/Upload.

also try using the route debugger (http://haacked.com/archive/2008/03/13/url-routing-debugger.aspx) to check where your route is being mapped to.