文件上传.NET Core'IFormFile'不包含'SaveAsASync'的定义，并且没有扩展方法 [英] File upload .NET Core 'IFormFile' does not contain a definition for 'SaveAsASync' and no extension method

问题描述

我正在尝试使用ASP.NET Core Web Api上传文件. 我发现了这么多代码:

I'm trying to upload a file using ASP.NET Core Web Api. As many i found this code:

namespace ModelBindingWebSite.Controllers
{
  public class HomeController : Controller
  {
    private IHostingEnvironment _environment;

    public HomeController(IHostingEnvironment environment)
    {
        _environment = environment;
    }
    public IActionResult Index()
    {
        return View();
    }

    [HttpPost]
    public async Task<IActionResult> Index(ICollection<IFormFile> files)
    {
        var uploads = Path.Combine(_environment.WebRootPath, "uploads");
        foreach (var file in files)
        {
            if (file.Length > 0)
            {
                var fileName = ContentDispositionHeaderValue.Parse(file.ContentDisposition).FileName.Trim('"');
                await file.SaveAsAsync(Path.Combine(uploads, fileName));
            }
        }
        return View();
    }
}

我得到错误IFormFile不包含SaveAsASync的定义，并且没有扩展方法. 有什么主意吗?

I get the error IFormFile does not contain a definition for SaveAsASync and no extension method. Any idea?

推荐答案

请参阅 https://github.com/aspnet/HttpAbstractions/issues/610 解释了为什么该方法被取代

Please see https://github.com/aspnet/HttpAbstractions/issues/610 which explains why the method has been superceded

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