ASP.NET CORE 中的 Request.Files

问题描述

我正在尝试使用 ajax 请求使用 aspnet 核心上传文件.在以前版本的 .net 中，我曾经使用

I am trying to upload files using aspnet core using ajax request . In previous versions of .net i used to handle this using

 foreach (string fileName in Request.Files)
            {
                HttpPostedFileBase file = Request.Files[fileName];
                //Save file content goes here

                fName = file.FileName;
     (...)

但现在它在 request.files 处显示错误我怎样才能让它工作?搜了一下发现httppostedfile已经改成了iformfile但是request.files怎么处理呢?

but now its showing error at request.files how can i get it to work ? i searched and found that httppostedfile has been changed to iformfile but how to handle request.files?

推荐答案

这是来自最近项目的工作代码.数据已从 Request.Files 移至 Request.Form.Files.如果您需要将流转换为字节数组 - 这是唯一对我有用的实现.其他人会返回空数组.

This is working code from a recent project. Data has been moved from Request.Files to Request.Form.Files. In case you need to convert stream to byte array - this is the only implementation that worked for me. Others would return empty array.

using System.IO;
var filePath = Path.GetTempFileName();
foreach (var formFile in Request.Form.Files)
{
   if (formFile.Length > 0)
   {
      using (var inputStream = new FileStream(filePath, FileMode.Create))
      {
         // read file to stream
         await formFile.CopyToAsync(inputStream);
         // stream to byte array
         byte[] array = new byte[inputStream.Length];
         inputStream.Seek(0, SeekOrigin.Begin);
         inputStream.Read(array, 0, array.Length);
         // get file name
         string fName = formFile.FileName;
      }
   }
}

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