ASP MVC3 FileResult with accents + IE8 - bugged?

If the file name contains accents, it works as expected in Opera, FF, Chrome and IE9.

But in IE8 file type is "unknown file type", and shows "file" as the file name (actually the last part of the URL).

Does anyone know a workaround? Other than replacing the "special" characters in the file name?

The test code: (file | new project | add controller)

public class FileController : Controll开发者_C百科er
{
    public ActionResult Index(bool? Accents)
    {
        byte[] content = new byte[] { 1, 2, 3, 4 };

        return File(content, "application/octet-stream", true.Equals(Accents) ? "dsaé.txt" : "dsae.txt");
    }
}

test it like this: http://localhost/file, and http://localhost/file?accents=true

Edit => The "solution" for me, if anyone interested:

public class FileContentResultStupidIE : FileContentResult //yeah, maybe i am not totally "politically correct", but still...
{
    public FileContentResultStupidIE(byte[] fileContents, string contentType) : base(fileContents, contentType) { }

    public override void ExecuteResult(ControllerContext context)
    {
        var b = context.HttpContext.Request.Browser;
        if (b != null && b.Browser.Equals("ie", StringComparison.OrdinalIgnoreCase) && b.MajorVersion <= 8)
        {
            context.HttpContext.Response.AppendHeader("Content-Disposition", "attachment; filename=\"" + HttpUtility.UrlPathEncode(base.FileDownloadName) + "\"");
            WriteFile(context.HttpContext.Response);
        }
        else
        {
            base.ExecuteResult(context);
        }
    }
}

Try adding the following line inside your controller action:

Response.HeaderEncoding = Encoding.GetEncoding("iso-8859-1");

You may take a look at the following blog post which discusses those issues. Unfortunately there isn't a general solution which will work among all browsers.

Is this a file the user is uploading to your system at some point? If so, restrict the use of accents in a file name. If not - don't use accents in your file names :).