为什么回应.结束不起作用

Question

这可能是一个重复的问题。但我的情况有所不同。我有一个页面可以下载文本文件。在页面中，我首先将文本文件解密为string plainText。然后将该字符串写入文件并上传到名为"解密文件"的文件夹中。下载解密的文件并删除以前保存的文件。

这是我下载的代码

                //Write the decrypted text to folder in the server.
                System.IO.File.WriteAllText(Server.MapPath("~/Decrypted Files/" + FileName), plainText);
                //Code for Download
                Response.Clear();
                Response.ContentType = "application/octet-stream";
                Response.AddHeader("Content-Disposition", "attachment; filename='" + FileName + "'");
                Response.WriteFile(Server.MapPath("~/Decrypted Files/" + FileName));
                //Delete File from the folder
                if (System.IO.File.Exists(Server.MapPath("~/Decrypted Files/" + FileName)))
                {
                    System.IO.File.Delete((Server.MapPath("~/Decrypted Files/" + FileName)));
                }
                Response.End();

但是代码执行没有从Response.End();继续，.aspx页面没有完成加载。我的代码出了什么问题？

Answer 1

现在我知道我的代码有什么问题。在结束之前，我删除了这个文件。所以我按如下方式更改了代码，一切都很好。

                //Write the decrypted text to folder in the server.
                System.IO.File.WriteAllText(Server.MapPath("~/Decrypted Files/" + FileName), plainText);
                //Code for Download
                Response.Clear();
                Response.ContentType = "application/octet-stream";
                Response.AddHeader("Content-Disposition", "attachment; filename='" + FileName + "'");
                Response.WriteFile(Server.MapPath("~/Decrypted Files/" + FileName));
                Response.Flush();
                //Delete File from the folder
                if (System.IO.File.Exists(Server.MapPath("~/Decrypted Files/" + FileName)))
                {
                    System.IO.File.Delete((Server.MapPath("~/Decrypted Files/" + FileName)));
                }
                HttpContext.Current.Response.End();

Answer 2

将该按钮（用于导出）放入更新面板