HTTP标头发送后无法重定向 [英] Cannot redirect after HTTP headers have been sent

问题描述

嗨先生，

我收到错误在发送HTTP标头后无法重定向

，同时在下载操作后重定向到另一个页面。



我分享了代码供您参考。请给我这个问题的解决方案。







Default.aspx.cs：

*********************



Response.Clear（）;



Response.ContentType =application / pdf;

string filePath =d：\\+ filename +。pdf ;

Response.AddHeader（Content-Disposition，String.Format（attachment; filename = \{0} \，filePath））;



Response.OutputStream.Write（bytes，0，bytes.Length）;

Response.Buffer = true;



Response.OutputStream.Flush（）;

Response.OutputStream.Close（）;

Response.Flush（）;

Response.Close（）;





Response.Redirect（StudentHome.aspx）;

Hi sir,
I am getting the error "Cannot redirect after HTTP headers have been sent"
while redirecting to another page after the download operation.

I shared the code for your reference. Kindly give me the solution for this problem.



Default.aspx.cs:
*********************

Response.Clear();

Response.ContentType = "application/pdf";
string filePath = "d:\\" + filename + ".pdf";
Response.AddHeader("Content-Disposition", String.Format("attachment;filename=\"{0}\"", filePath));

Response.OutputStream.Write(bytes, 0, bytes.Length);
Response.Buffer = true;

Response.OutputStream.Flush();
Response.OutputStream.Close();
Response.Flush();
Response.Close();


Response.Redirect("StudentHome.aspx");

推荐答案

您无法为一个请求发送两个响应。在这里你有两个。删除行

You cannot send send two response for one request. And here you have two. Remove the lines

Response.Flush();
Response.Close();

并尝试

and try

我必须从上面的两行中删除哪一行。

Hi,
What line i have to remove from the above two lines.

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