Question

I am using ASP.NET and C#.After click logout i am using this.

Session.Abandon();
Session.RemoveAll();
Page.Responce.Cache.setCacheability(HttpCacheability.NoCache);
Response.Redirect("Default.aspx");

But after this if they clicked back button in browser it is going to previous page.

Is there any way to prevent this?

Thanks..

Edit:

I did used this.

protected void Page_Load(object sender, EventArgs e)
{
    if(!IsPostBack)
    {
        if (Session["LoginId"] == null)
            Response.Redirect("frmLogin.aspx");
        else
        {
            Response.ClearHeaders();
            Response.AddHeader("Cache-Control", "no-cache, no-store, max-age=0, must-revalidate");
            Response.AddHeader("Pragma", "no-cache");
        }
    }
}

Because of this they click browser back button then the pageload will be called so there we can check for the session variable for authentication.

Answer 1

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