注销时关闭子弹出页面/关闭父页面

Question

How to close all child windows on closing/logout of Main page/window .I am using c# for button click event. On Logout button click event of main page I need to close all other child popups. My popup page name is dmssview.aspx and logout button click code behind below

protected void BLogOut_Click(object sender, EventArgs e)
{
  Session["UserAuthentication"] = null;
  Response.Redirect("~/SM_Login.aspx");
}

Please help me for closing popup pages

Answer 1

write the code in the log out button's click event

private void btnExit_Click(object sender, EventArgs e)
     {        
            for (int i = Application.OpenForms.Count-1 ; i >= 0; i--)
            {
                if (Application.OpenForms[i].Name != "Menu")
                    Application.OpenForms[i].Close();
            }



     }