如何下载MVC3文件？ [英] How to download files in mvc3?

问题描述

我编写了一个网站它需要能够上传和下载各种文件。如.PHP，.rar或JPG格式，的.cs，.PDF，.txt和等等。当我使用纯HTML这样的：

 ＆LT; A HREF =@ Model.dList [I] .filePath＆GT;下载和LT; / A＆GT;
 

它显示在浏览器中的TXT和JPEG文件的内容，但我不希望这种情况发生。我猜我需要使用控制器，并写了一些片code的它。我做了一些研究，并计算出它是与文件的contentType属性。我跟他们打了一下，写了一个函数

控制器：

 公共FileResult DownloadDoc（INT DID）
    {
        字符串文件路径= getFilePath（DID）;
        字符串的contentType =的getContentType（DID）;
        文件路径= Path.Combine（使用Server.Mappath（dr.GetString（文件路径）），dr.GetString（文件名））;
        返回文件（文件路径，则contentType）;
    }
 

查看：

  @ Html.ActionLink（下载，DownloadDoc，新{DID = @ M​​odel.dList [I] .documentationID}）
 

通过这个功能的文件下载，但它的名字是DownloadDoc始终，没有任何扩展名。我在这里卡住了。

我应该做任何花哨而我上传的文件？顺便说一下，后我上传的文件及其路径，CONTENTTYPES和文件名被存储在数据库中。我应该怎么办？

解决方案

 字符串文件名=FILENAME.TXT;
返回文件（文件路径，则contentType，文件名）;
 

然后，文件名称将是变量的值文件名。

I'm programming a web site which needs to be capable of upload and download all kinds of files. Such as .php, .rar, .jpg, .cs, .pdf, .txt and so. When I use plain html like:

 <a href="@Model.dList[i].filePath">download</a>

it shows the content of the txt and jpeg files in the browser but I don't want this to happen. I'm guessing I need to use controller and write some piece of code for it. I did some research and figured out it has something to do with contentType attribute of files. I played with them a bit and wrote a function

Controller:

public FileResult DownloadDoc(int dID)
    {
        string filePath = getFilePath(dID);
        string contentType = getContentType(dID);
        filePath = Path.Combine(Server.MapPath(dr.GetString("FilePath")), dr.GetString("FileName"));
        return File(filePath, contentType);
    }

View:

    @Html.ActionLink("Download", "DownloadDoc", new { dID = @Model.dList[i].documentationID })

With this function a file is downloaded but it's name is DownloadDoc always and without any extension. I'm stuck here.

Should I do anything fancy while i'm uploading the files? By the way, after I upload the files their paths, contenttypes and file names are stored in database. What should I do?

解决方案

string fileName = "FileName.txt";
return File(filePath, contentType, fileName);

Then, the file name will be the value of variable fileName.

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