Prevent User To Go Back Page After Logout

simply put this function in your Webpage . this will prevent user to go to back page after logout ..

protected void Page_Init(object sender, EventArgs e)

{

Response.Cache.SetExpires(DateTime.UtcNow.AddMinutes(-1));

Response.Cache.SetCacheability(HttpCacheability.NoCache);

Response.Cache.SetNoStore();

}