File upload to wwwroot folder in ASP.NET Core

Question

Why is my following codes sometimes work, but sometimes it does't work?

 private bool UploadFile(IFormFile ufile, string fname)
 {
     if (ufile.Length > 0)
     {
          string fullpath = Path.Combine(_env.WebRootPath, fname);
          using (var fileStream = new FileStream(fullpath, FileMode.Create))
          {
               ufile.CopyToAsync(fileStream);
          }
          return true;
     }
     return false;
 }

The code did managed to save the picture to a folder which I created under wwwroot, but the picture is not appearing, and even in Visual Studio too.

Is there a way to solve it?

Thanks.

Even when I open up the file explorer of the folder that is storing the pictures, the picture is like is there but not showing any image.

Check [this answer](https://stackoverflow.com/questions/49398965/what-is-the-equivalent-of-server-mappath-in-asp-net-core/49399105#49399105) — Hooman Bahreini, Jan 16 '19 at 05:46
there is a property >> "Show all files" in visual studio solution explorer toolbar. Click to view not include files which then be available to view. — Nomi Ali, Jan 16 '19 at 06:05
@HoomanBahreini That is not correct. The `WebRootPath` *is* the `wwwroot` while `ContentRootPath` would be the location you set as the IIS root for the application. — poke, Jan 16 '19 at 09:12
*“but sometimes it does't work”* – What exactly doesn’t work? Check your logs to see what is going on. And try debugging to see what might go wrong there. — poke, Jan 16 '19 at 09:13

score 21 · Answer 1 · edited Jul 29 '19 at 08:09

21

Try as follows. File will be uploaded to images folder under wwwroot folder.

private async Task<bool> UploadFile(IFormFile ufile)
{
     if (ufile != null && ufile.Length > 0)
     {
          var fileName = Path.GetFileName(ufile.FileName);
          var filePath = Path.Combine(Directory.GetCurrentDirectory(), @"wwwroot\images", fileName);
          using (var fileStream = new FileStream(filePath, FileMode.Create))
          {
              await ufile.CopyToAsync(fileStream);
          }
          return true;
      }
      return false;
}

edited Jul 29 '19 at 08:09

mekb

554
8
22

answered Jan 16 '19 at 04:59

TanvirArjel

30,049
14
78
114

May I know what does "await ufile.CopyToAsync(fileSteam)" means? – Matt Jan 16 '19 at 05:08
This is an asynchronous method which copy the `FileStream` to the specified path – TanvirArjel Jan 16 '19 at 05:10
But what is the difference between upload the image files to wwwroot/images and wwwroot/myFolder? – Matt Jan 16 '19 at 05:12
No difference but I have just used a sample name as `images`. You can also use your named folder like : `var filePath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot\\yourfolderaname", fileName);` – TanvirArjel Jan 16 '19 at 05:15
@Matt Any update? Whether your problem has been solved or not! – TanvirArjel Jan 16 '19 at 05:29
Nope... still trying – Matt Jan 16 '19 at 05:36
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/186753/discussion-between-tanvirarjel-and-matt). – TanvirArjel Jan 16 '19 at 05:37
2

Please do not use `Directory.GetCurrentDirectory()` inside of your code. Use the hosting environment to retrieve the location of the content root. – poke Jan 16 '19 at 09:12
@poke Thank you! but any explanation please? – TanvirArjel Jan 16 '19 at 09:13
Instead using GetCurrentDirectory: https://stackoverflow.com/questions/43709657/how-to-get-root-directory-of-project-in-asp-net-core-directory-getcurrentdirect – Leandro Bardelli Sep 26 '20 at 23:29

score 1 · Answer 2 · answered Jan 16 '19 at 05:14

1

Had same problem with dot net core, here's what I did:

-Make virtual directory

-Map it to that folder path (inside wwwroot)

-Make your fullpath equals to this VD ; absolute path (can keep it in config file)

-Give write permissions for this folder to iisuser

answered Jan 16 '19 at 05:14

Shahrukh Ahmad

133
1
1
10

Hi thanks for the help, do you have screenschots for each steps that you don't mind sharing with me? – Matt Jan 16 '19 at 05:22

score 0 · Answer 3 · answered Jan 16 '19 at 05:31

0

allow accessing to static files, just add this line in you startup.cs file under Configure method:

app.UseStaticFiles();

answered Jan 16 '19 at 05:31

LazZiya

5,286
2
24
37

"_but the picture is not appearing_" you mean it is not appearing in the internet browser? or you don't see it at all even when you browse manually in file browser? – LazZiya Jan 16 '19 at 05:38
But sometimes it does show itself. Is this something to do with the settings or the codes? – Matt Jan 16 '19 at 06:04
1

actually saying "_sometimes_" is not clear enough to know the reason, it could be the file size or type which is preventing the file from being saved. Just do more precise tests to find when the files are saved and when they are not, then it can be easy to solve. – LazZiya Jan 16 '19 at 06:17

File upload to wwwroot folder in ASP.NET Core

3 Answers3