File upload 文件上载.NET核心';格式文件';不包含';SaveAsASync';没有扩展方法
我正在尝试使用ASP.NET核心Web Api上载文件。 我发现了很多这样的代码:File upload 文件上载.NET核心';格式文件';不包含';SaveAsASync';没有扩展方法,file-upload,asp.net-web-api,File Upload,Asp.net Web Api,我正在尝试使用ASP.NET核心Web Api上载文件。 我发现了很多这样的代码: namespace ModelBindingWebSite.Controllers { public class HomeController : Controller { private IHostingEnvironment _environment; public HomeController(IHostingEnvironment environment) {
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();
}
}
namespace ModelBindingWebSite.Controllers
{
公共类HomeController:控制器
{
私人IHostingEnvironment\u environment;
公共家庭控制器(IHostingEnvironment环境)
{
_环境=环境;
}
公共IActionResult索引()
{
返回视图();
}
[HttpPost]
公共异步任务索引(ICollection文件)
{
var uploads=Path.Combine(_environment.WebRootPath,“uploads”);
foreach(文件中的var文件)
{
如果(file.Length>0)
{
var fileName=ContentDispositionHeaderValue.Parse(file.ContentDisposition.fileName.Trim(“”);
wait file.SaveAsAsync(Path.Combine(上传,文件名));
}
}
返回视图();
}
}
我发现错误ifformfile
不包含SaveAsASync
的定义,并且没有扩展方法。
有什么想法吗?请查看该方法被取代的原因您只需构建一个方便的扩展供以后使用
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
public static class FileSaveExtension
{
public static async Task SaveAsAsync(this IFormFile formFile, string filePath)
{
using (var stream = new FileStream(filePath, FileMode.Create))
{
await formFile.CopyToAsync(stream);
}
}
public static void SaveAs(this IFormFile formFile, string filePath)
{
using (var stream = new FileStream(filePath, FileMode.Create))
{
formFile.CopyTo(stream);
}
}
}
实施:
formFile.SaveAsAsync("Your-File-Path"); // [ Async call ]
formFile.SaveAs("Your-File-Path");
因此,我是否应该将其替换为:byte[]byteArray=Encoding.UTF8.GetBytes(上载);MemoryStream stream=new MemoryStream(byteArray);wait file.CopyToAsync(stream);Yep-您拥有该流,因此在完成后也不要忘记处理它…用using()包装新的MemoryStream块