I am getting exception "Cannot redirect after HTTP headers have been sent" when redirecting to another page

I am getting exception

"Cannot redirect after HTTP headers have been sent." 

when on doing Response.Redirect("Home.aspx").开发者_如何学运维

How can i solve this? I tried giving Response.Flush() before redirecting.

The problem is the Response.Flush() prior to redirecting. With HTTP you get one response for one request. Your browser requested the page only once, and I suspect you're trying to respond twice:

Response.Flush(); //First Response
Response.Redirect("Home.aspx"); //Second Response

Therefore taking this out the Response.Flush() will solve your problem.

In my case, cause of the problem is that loading data in the scroll gridview is taking a long time. And before gridview data is not loaded exactly, but I press the redirect button.

Trying solve problem may be:

+lessen your data get

or

+before loading completion prevent to press redirect button

I just ran across this problem in a little different way. I had two Response.Redirect calls that were not wrapped in isolated branches of code. Worked fine in Chrome, but IE did not like it. It was an easy fix since I had two "if" statements. I just turned the second one into an "else if" like so...

if (QueryString("reset") == "1")
{
    // User is resetting password
    Response.Redirect("/Account/ResetPassword.aspx");
}
else if (DataUtils.IsInt(QueryString("id")))
{
    // User is authenticating...completing signup
    Response.Redirect("/Account/Activate.aspx");
}