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When I select a file and submit the file for upload, I can't get the value of the File path in my Model. In the Controller it shows as null. What am I doing wrong?

View

<form method="post" action="/Account/Profile" enctype="multipart/form-data"> <label>Load photo: </label> <input type="file" name="filePath" id="file" /> <input type="submit" value="submit" /> </form>

Controller

public ActionResult Profile(ProfileModel model, FormCollection form) { string path = Convert.ToString(model.FilePath); return View(); }

Model

public HttpPostedFileBase FilePath { get { return _filePath; } set { _filePath = value; } } public bool UploadFile() { if (FilePath != null) { var filename = Path.GetFileName(FilePath.FileName); FilePath.SaveAs(@"C:\" + filename); return true; } return false; }
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  • Is it really possible to have data-binding for an file-upload-element? Currently I would say no... Commented Aug 24, 2010 at 12:40

3 Answers 3

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I don't think model binding works with HttpPostedFileBase...

It should work if you take it out of your ViewModel and do it like this:

public ActionResult Profile(HttpPostedFileBase filePath) { string path = Convert.ToString(filePath); return View(); }

HTHs,
Charles

Ps. This post could help explain things: ASP.NET MVC posted file model binding when parameter is Model

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I don't have VS to simulate your problem. So im not sure bout the answer.

Try this, might work

<input type="file" name="model.FilePath" id="file" />

If not work then, Try look it on your formcollection & HttpContext.Request.Files

It should be there.

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then maybe you can't bind file upload element on a model paramater as commented by Olaf. I tried to look on my previous project code & i used HttpContext.Request.Files instead of binding it to model.
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Instead of using HttpPostedFileBase I would use IFormFile

public class ModelFile { ..... public string Path{ get; set; } public ICollection<IFormFile> Upload { get; set; } } public async Task<IActionResult> Index([Bind("Upload,Path")] ModelFile modelfile) { ... msg = await storeFilesInServer(modelfile.Upload,modelfile.Path); } private async Task<Message> storeFilesInServer(ICollection<IFormFile> upload, string path) { Message msg = new Message(); msg.Status = "OK"; msg.Code = 100; msg.Text = "File uploaded successfully"; msg.Error = ""; string tempFileName = ""; try { foreach (var file in upload) { if (file.Length > 0) { string tempPath = path + @"\"; if (Request.Host.Value.Contains("localhost")) tempPath = path + @"\"; using (var fileStream = new FileStream(tempPath + file.FileName, FileMode.Create)) { await file.CopyToAsync(fileStream); tempFileName = file.FileName; } } msg.Text = tempFileName; } } catch (Exception ex) { msg.Error = ex.Message; msg.Status = "ERROR"; msg.Code = 301; msg.Text = "There was an error storing the files, please contact support team"; } return msg; }
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