c# - 从 asp.net 中的文件夹下载文件

Question

我正在开发一个网站，我正在上传文档并将其存储在文件夹中。上传文件工作正常，但下载代码不工作。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();         
         }    
}

Answer 1

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();                   
     }    
}