相当于c中的$\u文件#

看一看 Request.Files 例如:

foreach (HttpPostedFile item in Request.Files)
{
    var filename = item.FileName;

    var fileBytes = new byte[item.ContentLength];
    item.InputStream.Read(fileBytes, 0, item.ContentLength);

    // fileBytes now contains the content of the file
    // filename contains the name of the file
}

你会有一个 HttpRequest 对象传入处理程序,对吗?只需访问该对象 Files 财产:

for (int i = 0; i < request.Files.Count; i++)
{
    var file = request.Files[i];
    // Do something with this file, for example:
    file.SaveAs(Path.Combine(someDirectory, file.FileName));
}

有时也可以使用httppostedfilebase参数(例如uploadify):

前任:

public ActionResult UploadPicture(HttpPostedFileBase fileData){
  img = Image.FromStream(fileData.InputStream, true, true);
}