Multiple file upload using Request.Files["files"] MVC

Question

This is my Code. I want to uplade 3 file into my database

first in View I write this : <% using (Html.BeginForm(Actionname, Controller, FormMethod.Post, new {enctype="multipart/form-data"})){%> ..... ....

and this is 3 file uplaoding:

<input type="file" name="files" id="FileUpload1" />
<input type="file" name="files" id="FileUpload2" />
<input type="file" name="files" id="FileUpload3" />

In controller I use this code:

IEnumerable<HttpPostedFileBase> files = Request.Files["files"] as IEnumerable<HttpPostedFileBase>;
foreach (var file in files)
{
byte[] binaryData = null;
HttpPostedFileBase uploadedFile = file;
if (uploadedFile != null && uploadedFile.ContentLength > 0){
 binaryData = new byte[uploadedFile.ContentLength];
 uploadedFile.InputStream.Read(binaryData, 0,uploadedFile.ContentLength);
}
}

but the files always return NULL :(

please help me, thank you.

Darin Dimitrov · Accepted Answer · 2010-11-20 11:06:48Z

5

Try this instead:

<% using (Html.BeginForm("Index", "Home", FormMethod.Post, new { enctype = "multipart/form-data" })) {%>
    <input type="file" name="files" id="FileUpload1" />
    <input type="file" name="files" id="FileUpload2" />
    <input type="file" name="files" id="FileUpload3" />
    <input type="submit" value="Upload" />
<% } %>

and the corresponding controller:

public class HomeController : Controller
{
    public ActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public ActionResult Index(IEnumerable<HttpPostedFileBase> files)
    {
        foreach (var file in files)
        {
            if (file.ContentLength > 0)
            {
                // TODO: do something with the uploaded file here
            }
        }
        return RedirectToAction("Index");
    }
}

It's a bit cleaner.

edited Nov 20, 2010 at 11:06

answered Nov 20, 2010 at 10:56

Darin Dimitrov

1.0m276 gold badges3.3k silver badges3k bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Negar Over a year ago

Is it necessary to add "IEnumerable<HttpPostedFileBase> files" to actionResult as parameter? I do that but still NULL

Darin Dimitrov Over a year ago

Yes, this way you no longer need to use the Request.Files inside the action. The default model binder will do the job. I don't know why you are getting NULL. Are those inputs inside the form? When I tested my code I was able to fetch the uploaded files.

James Bender Over a year ago

What if I'm already getting a model back for the rest of the things on the page as the argument to my controller method, how do I make this work then?

Darin Dimitrov Over a year ago

@JamesBender, you simply define a view model and have your controller action take this view model as parameter.

Stephen Rauch · Accepted Answer · 2018-05-17 13:41:58Z

3

You should use:

IList<HttpPostedFileBase> files = Request.Files.GetMultiple("files")

instead.

edited May 17, 2018 at 13:41

Stephen Rauch♦

50.1k32 gold badges118 silver badges143 bronze badges

answered May 17, 2018 at 13:13

Enoch Olaoye

1541 silver badge6 bronze badges

Collectives™ on Stack Overflow

Multiple file upload using Request.Files["files"] MVC

2 Answers 2

4 Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

4 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related