Question

我在HomeController中有这段代码

[HttpPost]
public ActionResult NewRequest(int? id, FormCollection form, HttpPostedFileBase   uploadFile)
{
     if (uploadFile != null && uploadFile.ContentLength > 0)
        {
            // extract only the fielname
            var fileName = Path.GetFileName(uploadFile.FileName);
            // store the file inside ~/App_Data/uploads folder
            var path = Path.Combine(Server.MapPath("~/Documents/Files"), fileName);
            uploadFile.SaveAs(path);
        }
        // redirect back to the index action to show the form once again
        return RedirectToAction("Index");    
}

我的NewRequest视图就是这个

@using (Html.BeginForm("NewRequest", "Controllers", FormMethod.Post, new { enctype = "multipart/form-data"}))
    {
        <input type="file" name="uploadFile" />
        <input type="submit" value="Upload" />
    }

问题是上传的文件，.txt文件f.x.永远是空的。

Answer 1

您的代码很好。我唯一能想到的情况就是路由配置可能不对。

我已经使用此配置进行测试，它就像一个魅力。

      routes.MapRoute(
            name: "NewRequest",
            url: "Controllers/NewRequest",
            defaults: new { controller = "Controllers", action = "NewRequest" }
            );

ASP MVC HttpPostedFileBase始终返回null

1 个答案: