MVC 4 Razor 文件上传 [英] MVC 4 Razor File Upload

问题描述

我是 MVC 4 的新手，我正在尝试在我的网站.我找不到错误.我得到一个空值我文件中的值.

I am new to MVC 4 and I am trying to implement File Upload Control in my website. I am not able to find the mistake.I am getting a null value in my file.

控制器:

public class UploadController : BaseController
    {
        public ActionResult UploadDocument()
        {
            return View();
        }

       [HttpPost]
       public ActionResult Upload(HttpPostedFileBase file)
       {
           if (file != null && file.ContentLength > 0)
           {
               var fileName = Path.GetFileName(file.FileName);
               var path = Path.Combine(Server.MapPath("~/Images/"), fileName);
               file.SaveAs(path);
           }

           return RedirectToAction("UploadDocument");
        }
    }

查看:

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

推荐答案

Upload 方法的 HttpPostedFileBase 参数必须与 file input<同名/代码>.

The Upload method's HttpPostedFileBase parameter must have the same name as the the file input.

所以只需将输入更改为:

So just change the input to this:

<input type="file" name="file" />

此外，您可以在 Request.Files 中找到文件:

Also, you could find the files in Request.Files:

[HttpPost]
public ActionResult Upload()
{
     if (Request.Files.Count > 0)
     {
         var file = Request.Files[0];

         if (file != null && file.ContentLength > 0)
         {
            var fileName = Path.GetFileName(file.FileName);
            var path = Path.Combine(Server.MapPath("~/Images/"), fileName);
            file.SaveAs(path);
         }
     }

     return RedirectToAction("UploadDocument");
 }

这篇关于MVC 4 Razor 文件上传的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！