Question

每当我尝试将文件上传到服务器时，当前视图都会重定向到与控制器不同的视图。如何上传文件并保持在同一个视图中。

我尝试过以下代码：

public Action Result(HttpPostedFileBase file)
{
  return new EmptyResult();
}

Answer 1

Return View();

应该按照您的预期工作，返回名为结果的视图。

如果当前操作方法不是您要返回的视图，则可以使用：

return RedirectToAction("actionmethodname");

Answer 2

我建议使用像plupload这样的内容进行异步上传。这样，您可以在不重定向的情况下上传，甚至在上传完成后查看图像/文档。

它允许通过不同方法进行多次上传和回退，以成功上传文件。

为了实现，您只需创建另一个控制器来处理上传。

Answer 3

检查我的代码以获取MVC架构中的文章提交。

public ActionResult Submit(ArticleViewModel newSubmit, HttpPostedFileBase uploadFile)
{
    if (ModelState.IsValid)
    {
        //Upload File
        if (uploadFile != null)
        {
            string fileName = uploadFile.FileName;
            newSubmit.Article.image = fileName;
            uploadFile.SaveAs("~/Content/Uploads/Images");
            string savedFileName = Path.Combine(Server.MapPath("~/Content/Uploads/Images"), uploadFile.FileName);
        }
    // The HTML comes encoded so we decode it before insert into database
    newSubmit.Article.content = HttpUtility.HtmlDecode(newSubmit.Article.content);
    //Set article flags
    newSubmit.Article.flagged = true;
    newSubmit.Article.finished = false;
    newSubmit.Article.submitStoryFlag = true;
    //Insert article in the database                _repository.AddArticle(newSubmit);
    return View("Submitted");
}
    else
    {
       // Invalid – redisplay with errors
       return View(newSubmit);
    }
}

Answer 4

假设您的视图名称是UploadView.cshtml，那么您正在上传文件。

UploadView.cshtml

@using (Html.BeginForm("UploadFile", "MyController", FormMethod.Post, new { enctype = "multipart/form-data", id = "frm", name = "frm" }))
{
<input id="FileAttachments" type="file" name="FileAttachments" />&nbsp;&nbsp; 
<input type="submit" value="upload" />
}

您的控制器将是 MyController.cs

[HttpGet]
public ActionResult UploadView()
{
   Return View();
}

[HttpPost]
public ActionResult UploadFile(HttpPostedFileBase FileAttachments)
{
    if (FileAttachments != null)
    {
       string fileName = System.Guid.NewGuid().ToString() + Path.GetFileName(FileAttachments.FileName);
       fileName = Path.Combine(Server.MapPath("~/Content/Files"), fileName);
       FileAttachments.SaveAs(fileName);
    }
    return View("UploadView");
}

mvc3文件上传

4 个答案: