c# – 从asp.net中的文件夹下载文件

发布时间：2020-12-16 02:00:42 所属栏目：百科来源：网络整理

导读：我正在开发一个网站,我上传文件并存储在文件夹中.上传文档工作正常,但下载代码不起作用.我需要从文件夹下载文件. protected void btnDownload_Click(object sender,EventArgs e){ lblresume.Text = "~/Student_Resume/" + fuResume.FileName.ToString(); if

我正在开发一个网站,我上传文件并存储在文件夹中.上传文档工作正常,但下载代码不起作用.我需要从文件夹下载文件.

protected void btnDownload_Click(object sender,EventArgs e)
{        
         lblresume.Text = "~/Student_Resume/" + fuResume.FileName.ToString();         
         if (lblresume.Text != string.Empty)        
         {
             string filePath = lblresume.Text;             
             Response.ContentType = "doc/docx";             
             Response.AddHeader("Content-Disposition","attachment;filename="" + filePath + """);              
             Response.TransmitFile(Server.MapPath(filePath));             
             Response.End();         
         }    
}

解决方法

试试这个

protected void btnDownload_Click(object sender,EventArgs e)
{        
     lblresume.Text = "~/Student_Resume/" + fuResume.FileName.ToString();         
     if (lblresume.Text != string.Empty)        
     {
         WebClient req = new WebClient();
         HttpResponse response = HttpContext.Current.Response;
         string filePath = lblresume.Text;               
         response.Clear();
         response.ClearContent();
         response.ClearHeaders();
         response.Buffer = true;
         response.AddHeader("Content-Disposition","attachment;filename=Filename.extension");
         byte[] data = req.DownloadData(Server.MapPath(filePath));
         response.BinaryWrite(data);
         response.End();                   
     }    
}

（编辑：李大同）

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