CODEWITHSUNDEEP
c#asp.net-mvc
Sam D.
Sam D.

Reputation: 76

Request.Files is empty when files come through as an array

I'm doing some integration with a third party form builder software that allows the form to be posted to our own server. The form data and files are then saved to a DB. The issue is when the form contains multiple file upload fields, Request.Files is always empty.

Using Fiddler, I can see the binary files coming through. The only thing that I can think of is that the field name contains brackets in them (because it's being sent as an array) and so the model binder can't bind it properly? The field names that are coming through are tfa_20[0] and tfa_20[1].

Code-wise, it's pretty standard stuff:

var data = new Submission()
{
    ConfigurationDetailId = configDetail.Id,
    SubmitterEmail = submitterEmail,
    SubmissionData = Request.Form.AllKeys.Select(k => new SubmissionData()
    {
        FieldName = k,
        FieldValue = Request.Form[k]
    }).ToList(),
    SubmissionFiles = new List<SubmissionFile>()
};

// process any files uploaded
if (Request.Files.Count > 0)
{
    foreach (string field in Request.Files)
    {
        var uploadedFile = Request.Files[field];

        if (!string.IsNullOrEmpty(fileName))
        {
                data.SubmissionFiles.Add(GetSubmissionFile(uploadedFile, fileName));
        }
    }
}

Repository.SaveForm(data);

Any help would greatly be appreciated.

Upvotes: 0

Views: 685

Answers (1)

Javid Gahramanov
Javid Gahramanov

Reputation: 112

Use HttpPostedFileBase in order to get posted file to your action. in case of multiple files,should be used an HttpPostedFileBase[] array.

To Enable uploading in forms, is necessary to add enctype="multipart/form-data" to your form tag. or if you use razor syntax change your beginForm tag to this.

View.cshtml

   @using (Html.BeginForm("action","controller", FormMethod.Post, new { @enctype = 
  "multipart/form-data" }))
    {
    }

 public ActionResult YourAction(HttpPostedFileBase[] files)
    {
        var data = new Submission()
        {
            ConfigurationDetailId = configDetail.Id,
            SubmitterEmail = submitterEmail,
            SubmissionData = Request.Form.AllKeys.Select(k => new SubmissionData()
            {
                FieldName = k,
                FieldValue = Request.Form[k]
            }).ToList(),
            SubmissionFiles = new List<SubmissionFile>()
        };

        if (files.Length > 0)
        {
            foreach (HttpPostedFileBase file in files)
            {
                var uploadedFile = file;

                if (!string.IsNullOrEmpty(file.FileName))
                {
                    data.SubmissionFiles.Add(GetSubmissionFile(uploadedFile, file.fileName));
                }
            }
        }

        return View();
    }

Upvotes: 1

Related Questions