HttpPostedFileBase returns null after submitting

Question

I keep on getting null with HttpPosterFileBase when I try uploading a file:

I have this code in my view:

@using (Html.BeginForm("Import", "Control", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    <input type="file" name="fileUpload"/>
    <input type="submit" value="Import" id="btnImport" class="button" />
}

And this code with my controller:

[HttpPost]
public ActionResult Import()
{    
     HttpPostedFileBase file = Request.Files[fileUpload];            
     Other codes...
}

I also tried this in my controller:

[HttpPost]
public ActionResult Import(HttpPostedFileBase fileUpload)
{        
    Other codes...
}

After pressing the submit button the "file" got a value of null.

score 1 · Answer 1 · answered Jul 24 '13 at 10:13

1

The default model binder binds by name for files. Your inputs name is fileUpload.. your parameter name is file. Making them the same will work.

answered Jul 24 '13 at 10:13

Simon Whitehead

63,300
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Hi,thanks but I already match the parameter and input name and still no luck :( – SyntaxError Jul 24 '13 at 12:23

Dimitar Dimitrov · Answer 2 · 2013-07-24T13:21:23.763

0

You're not doing your binding correctly, change this:

[HttpPost]
public ActionResult Import(HttpPostedFileBase file)
{        
    // other stuff
}

To:

[HttpPost]
public ActionResult Import(HttpPostedFileBase fileUpload)
{        
    // other stuff
}

edited Jul 24 '13 at 13:21

answered Jul 24 '13 at 10:15

Dimitar Dimitrov

14,868
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Hi,thanks but upon doing this, I still got no luck. still null value :( – SyntaxError Jul 24 '13 at 12:24

Dejan.S · Answer 3 · 2013-07-24T16:32:40.587

Your names can't match because this code below works for me, unless you use some kind of jQuery or Ajax that's preventing this to work you should be good. It's the name of the file upload input and the HttpPostedFileBase name that must match.

@using (Html.BeginForm("import", "control", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    <input type="file" name="fileupload" />
    <input type="submit" value="Import" id="btnImport" class="button" />
}



[HttpPost]
public ActionResult Import(HttpPostedFileBase fileupload)
{
      return View();
}

score 0 · Answer 4 · edited May 23 '17 at 12:13

0

Thanks everyone for your answers. I believe all those answers are correct but I was able to fix the problem after I notice that I have nested forms with page. Found the solution after reading the answer here: MVC. HttpPostedFileBase is always null

Again, Thanks! Cheers! :)

edited May 23 '17 at 12:13

Community

1
1

answered Jul 25 '13 at 11:49

SyntaxError

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HttpPostedFileBase returns null after submitting

4 Answers4