Richard77 Richard77 - 3 months ago 211
C# Question

How to save IFormFile to disk?

I'm trying to save a file on disk using this piece of code.

IHostingEnvironment _hostingEnvironment;
public ProfileController(IHostingEnvironment hostingEnvironment)
{
_hostingEnvironment = hostingEnvironment;
}

[HttpPost]
public async Task<IActionResult> Upload(IList<IFormFile> files)
{
foreach (var file in files)
{
var fileName = ContentDispositionHeaderValue
.Parse(file.ContentDisposition)
.FileName
.Trim('"');

var filePath = _hostingEnvironment.WebRootPath + "\\wwwroot\\" + fileName;
await file.SaveAsAsync(filePath);
}
return View();
}


I was able to replace IApplicationEnvironment with IHostingEnvironment, and ApplicationBasePath with WebRootPath.

It seems like IFormFile doesn't have SaveAsAsync() anymore. How do I save file to disk then?

Answer

A few things have changed since core's release candidates

public class ProfileController : Controller {
    private IHostingEnvironment _hostingEnvironment;

    public ProfileController(IHostingEnvironment environment) {
        _hostingEnvironment = environment;
    }

    [HttpPost]
    public async Task<IActionResult> Upload(IList<IFormFile> files) {
        var uploads = Path.Combine(_hostingEnvironment.WebRootPath, "uploads");
        foreach (var file in files) {
            if (file.Length > 0) {
                var filePath = Path.Combine(uploads, file.FileName);
                using (var fileStream = new FileStream(filePath, FileMode.Create)) {
                    await file.CopyToAsync(fileStream);
                }
            }
        }
        return View();
    }
}