如何从gridview下载文件？ [英] How do I download files from a gridview?

问题描述

这是我的代码。

protected void GridView1_RowCommand(object sender, GridViewCommandEventArgs e)
       {
           if (e.CommandName == "Download")
           {
               string Filepath = e.CommandArgument.ToString();
               string path = MapPath(Filepath);
               byte[] bts = System.IO.File.ReadAllBytes(path);


               Response.Clear();
               Response.ClearHeaders();
               Response.AddHeader("Content-type", "application/octect-stream");
               Response.AddHeader("Content-Length", bts.Length.ToString());
               Response.AddHeader("Content-Disposition", "attachment; Filepath=" + Filepath);
               Response.BinaryWrite(bts);
               Response.Flush();
               Response.End();
           }
       }

但是当我尝试下载时，我收到此错误'是物理路径，但预计会有虚拟路径，任何人都可以帮我这个吗？

But when I try downloading, I get this error "' is a physical path, but a virtual path was expected", can anybody help me with this??

推荐答案

我认为你的错误在于映射路径。你已经做了 MapPath（Filepath）。因此， Filepath 已经是本地路径，但是您将其传递给需要转换虚拟路径的方法。





   - Amy

I think your error is in Mapping the path. You did MapPath(Filepath) already. So, Filepath is already a local path, but you pass it to a method that expects a virtual path to convert.


  --Amy

这篇关于如何从gridview下载文件？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！