Question

Greetings,

I’m using https://github.com/blueimp/jQuery-File-Upload (downloaded the version as of 5/21/2011) along with ASP.NET MVC3.

And here are the versions of jquery I am using:

-jquery-ui-1.8.11.min.js
-jquery-1.6.1.js

I was able to upload and save the file to designated folder, and then I return the Json object. Then the IE 7 browser pops a “File Download” dialog and asks me to download a file named “upload75bea5a4” with no extension.
I also testing in FF 3.6, and it too pops up a “file download” dialog and asks me to download a file named “UploadFiles” (which is the controller action name).
Any idea what’s going on here? Do I need to set the content-type in the header explicitly?

Thanks much in advance.

This is basically the same question posed by Ray in this thread:

jQuery File Upload plugin asks me to download the file, what is wrong?

No working solution was posed however.

Answer 1

It seems that you need to change the content type to text/plain as per this discussion.
And here’s what they suggest:

[HttpPost]
public ActionResult Upload(FormCollection form)
{
    ...
    var json = new JavaScriptSerializer().Serialize(result);
    return Content(json, "text/plain");
}