Redirecting to Page Problem

Hi,

I have one folder Admin, In Admin folder i have one page Section.aspx page.

In the main root directory, i have one page customer.aspx page.

In customer.aspx page, i have one button, when i clcked that i want to redirected to Section.aspx page that is in Admin Folder.

Protected void Button1_Click(object sender,EventArgs e)

{

Response.Redirect("Admin/Section.aspx?SelectedValue=Admin");

}

When i click the Button it is redirecting to Home.aspx page...and in the Browse i am getting the url like this:

localhost/Home.aspx?ReturnUrl=%2fAdmin%2fSection.aspx%3fSelectedValue%3dAdmin&SelectedValue=Admin

But in the Same Button when i redirected to some other page it redirecting,but in the above page i.e Section.aspx it is not redirecting.

In section.aspx page:

we are displaying some values in the Grid.

Thanks,