使用C＃在asp.net中下载文件 [英] Downloading files in asp.net using C#

问题描述

如何在asp.net中下载文件？
是我上载的内容：
我将文件上载到网站，并将URL保存到这样的数据库中：

How do i download a file in asp.net? here is what i did to upload it: I upload the file into the website and saved the url to it in a database like this:

string CVPath = null;
  if (uploadfiles.HasFile)
  {
    string file = uploadfiles.FileName;
    uploadfiles.PostedFile.SaveAs(Server.MapPath(".") + "//CV//" + file);
    CVPath = "~//ProfileImages//" + file;
    FileName.InnerText = file;
  }
  else
    CVPath = "";

然后将 CVPath保存在数据库中

and then I save the "CVPath" in a database

推荐答案

要下载文件，首先需要将所有内容读取为字符串。

To download a file, first you need to read all the contents to a string.

    MemoryStream ms = new MemoryStream();
    TextWriter tw = new StreamWriter(ms);
    tw.WriteLine("YourString");
    tw.Flush();
    byte[] bytes = ms.ToArray();
    ms.Close();
    Response.Clear();
    Response.ContentType = "application/force-download";
    Response.AddHeader("content-disposition", "attachment; filename=file.txt");
    Response.BinaryWrite(bytes);
    Response.End(); 

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