File input no longer posting

[kichalla]

From @MihaiBratulescu on July 4, 2016 7:10

I have a few of these file inputs:

<input id="ZoneOfAnalysisFiles[@Model.Key].Key" name="ZoneOfAnalysisFiles[@Model.Key].Key" value="@Model.Value.Identification" hidden />

<input id="ZoneOfAnalysisFiles[@Model.Key].Value" name="ZoneOfAnalysisFiles[@Model.Key].Value" 
                                   type="file" multiple style="display:inline-block">

The keys get posted but not the files. In Request.Form.Keys the Value keys are missing for the file inputs but if I change to text it's working all the sudden.

This has been happening since I upgraded to RTM and worked fine in RC2.

My project.json :

{
  "userSecretsId": "aspnet-WNCT.Web-f9ad84ae-9b95-4000-ab80-3ecdf4814421",

  "dependencies": {
    "Microsoft.AspNetCore.Session": "1.0.0",
    "Microsoft.AspNetCore.Hosting": "1.0.0",
    "Microsoft.AspNetCore.Identity.EntityFrameworkCore": "1.0.0",
    "Microsoft.AspNetCore.Mvc": "1.0.0",
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Server.IISIntegration": "1.0.0",
    "Microsoft.AspNetCore.Server.Kestrel": "1.0.0",
    "Microsoft.AspNetCore.StaticFiles": "1.0.0",
    "Microsoft.AspNetCore.Diagnostics": "1.0.0",
    "Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore": "1.0.0",
    "Microsoft.EntityFrameworkCore.SqlServer": "1.0.0",
    "Microsoft.Extensions.Configuration.EnvironmentVariables": "1.0.0",
    "Microsoft.Extensions.Configuration.Json": "1.0.0",
    "Microsoft.Extensions.Configuration.UserSecrets": "1.0.0",
    "Microsoft.Extensions.Logging": "1.0.0",
    "Microsoft.Extensions.Logging.Console": "1.0.0",
    "Microsoft.Extensions.Logging.Debug": "1.0.0",
    "Serilog": "2.0.0-rc-602",
    "Serilog.Sinks.RollingFile": "2.0.0-rc-703",
    "Serilog.Extensions.Logging": "1.0.0-rc2-10110",
    "HtmlAgilityPack": "1.4.9",
    "LDAP": "1.0.0",
    "WNCT.BL": "1.0.0-*",
    "WNCT.Domain": "1.0.0-*",
    "WNCT.EF": "1.0.0-*"
  },

  "tools": {
    "Microsoft.AspNetCore.Razor.Tools": "1.0.0-preview2-final",
    "Microsoft.AspNetCore.Server.IISIntegration.Tools": "1.0.0-preview2-final"
  },

  "frameworks": {
    "net451": {}
  },

  "buildOptions": {
    "platform": "x86",
    "emitEntryPoint": true,
    "preserveCompilationContext": true
  },

  //"runtimes": { "win": [ "win7-x86" ] },

  "publishOptions": {
    "include": [
      "wwwroot",
      "Views",
      "appsettings.json",
      "web.config"
    ]
  },

  "scripts": {
    "prepublish": [ "npm install", "gulp clean", "gulp min" ],
    "postpublish": [ "dotnet publish-iis --publish-folder %publish:OutputPath% --framework %publish:FullTargetFramework%" ]
  }
}

Is there a solution out there?

Copied from original issue: dotnet/aspnetcore#1631

[kichalla]

From @Tratcher on July 5, 2016 16:32

Is it in Request.Form.Files?

[kichalla]

From @MihaiBratulescu on July 5, 2016 16:55

@Tratcher Yes, I now see it's posting but not binding to the dictionary (IDictionary<string, IEnumerable>) from my model.

[kichalla]

From @Tratcher on July 5, 2016 16:58

@rynowak @kichalla ?

[kichalla]

From @MihaiBratulescu on July 5, 2016 17:3

Sorry I swear I wrote something else, my model is:

public class ScopeModel
{
public IDictionary<string, IEnumerable<IFormFile>> ZoneOfAnalysisFiles {get;set;}
....
}

[kichalla]

From @prilutskiy on July 5, 2016 23:14

@MihaiBratulescu, Do you have enctype attribute of the form set to multipart/form-data?

[kichalla]

From @MihaiBratulescu on July 6, 2016 13:17

@prilutskiy Yes, like I said it worked in RC2. I have the same problem on a different machine at home.

[kichalla]

I am looking at it now.

[kichalla]

Could you share how your raw request looks like?(ex: browser developer tools) I am not interested in the files being uploaded but the individual parts' headers(because for model binding purpose how the key names are important). So following is the model you are binding to?

public class ScopeModel
{
public IDictionary<string, IEnumerable<IFormFile>> ZoneOfAnalysisFiles {get;set;}
....
}

[kichalla]

From @MihaiBratulescu on July 6, 2016 21:27

@kichalla not sure what you ask for but here is a more simple example that also does not work:

Model:

    public class UploadModel
    {
        public IDictionary<string, IEnumerable<IFormFile>> Files { get; set; }
    }

View:

<form method="post"  enctype="multipart/form-data" action="/Home/Upload">

   @for (int i = 0; i < 3; i++)
   {
       <input type="text" hidden id="Files[@i].Key" name="Files[@i].Key" value="@(i)File" />
        <input type="file" multiple id="Files[@i].Value" name="Files[@i].Value" />
   }
    <button type="submit">Submit</button>
</form>

Controller:

[HttpGet]
        public IActionResult Upload()
        {
            return View();
        }

        [HttpPost]
        public IActionResult Upload(UploadModel form)
        {
            return View();
        }

As for the headers:

Request URL:http://localhost:54821/Home/Upload
Request Headers
Provisional headers are shown
Content-Type:multipart/form-data; boundary=----WebKitFormBoundaryB2Y9SIARh3WgqkPB
Origin:http://localhost:54821
Referer:http://localhost:54821/Home/Upload
Upgrade-Insecure-Requests:1
User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36
Request Payload
------WebKitFormBoundaryB2Y9SIARh3WgqkPB
Content-Disposition: form-data; name="Files[0].Key"

0File
------WebKitFormBoundaryB2Y9SIARh3WgqkPB
Content-Disposition: form-data; name="Files[0].Value"; filename="somefile.torrent"
Content-Type: application/x-bittorrent

------WebKitFormBoundaryB2Y9SIARh3WgqkPB
Content-Disposition: form-data; name="Files[1].Key"

1File
------WebKitFormBoundaryB2Y9SIARh3WgqkPB
Content-Disposition: form-data; name="Files[1].Value"; filename=""
Content-Type: application/octet-stream

------WebKitFormBoundaryB2Y9SIARh3WgqkPB
Content-Disposition: form-data; name="Files[2].Key"

2File
------WebKitFormBoundaryB2Y9SIARh3WgqkPB
Content-Disposition: form-data; name="Files[2].Value"; filename=""
Content-Type: application/octet-stream

------WebKitFormBoundaryB2Y9SIARh3WgqkPB--

[kichalla]

Thanks! for the simple repro. cc @dougbu

[kichalla]

ac98417