Question

我尝试在下载文件后删除文件。我的代码是

private void DownloadZipFileDialogue(string strZipFilePath)
{
  Response.ContentType = "application/octet-stream";
  Response.AppendHeader("Content-Disposition", "attachment; filename=" +   Path.GetFileName(strZipFilePath));
  Response.TransmitFile(strZipFilePath);
  Response.End();
  //File.Delete(strZipFilePath);
 }

我知道在Response.End();之后没有代码块执行。如果我尝试删除文件befor Response.End(); zip文件已损坏。我搜索每个地方。我尝试：
{{1} }
与其使用
ApplicationInstance.CompleteRequest();。
但我得到相同的result.zip文件已损坏。我看到这个Is Response.End() considered harmful?但无法找到解决方案。任何解决问题的想法。谢谢。

Answer 1

你可以试试这个，

private void DownloadZipFileDialogue(string strZipFilePath)
{
  Response.ContentType = "application/octet-stream";
  Response.AppendHeader("Content-Disposition", "attachment; filename=" +   Path.GetFileName(strZipFilePath));

    using(Stream input = File.OpenRead(strZipFilePath)){

       /// .NET 4.0, use following line if its .NET 4 project
       input.CopyTo(Response.OutputStream);

       /// .NET 2.0, use following lines if its .NET 2 project
       byte[] buffer = new byte[4096];
       int count = input.Read(buffer,0,buffer.Length);
       while(count > 0){
          Response.OutputStream.Write(buffer,0,count);
          count = input.Read(buffer,0,buffer.Length);
       }
    }

    File.Delete(strZipFilePath);
}

想要Response.End（）的替代品

1 个答案: