Detect browser refresh

Question

How can I find out if the user pressed F5 to refresh my page (Something like how SO implemented. If you refresh your page, the question counter is not increased). I have tes

Answer 1

I run into this problem and use the following code. It works well for me.

bool isPageRefreshed = false;

protected void Page_Load(object sender, EventArgs args)
{
    if (!IsPostBack)
    {
        ViewState["ViewStateId"] = System.Guid.NewGuid().ToString();
        Session["SessionId"] = ViewState["ViewStateId"].ToString();
    }
    else
    {
        if (ViewState["ViewStateId"].ToString() != Session["SessionId"].ToString())
        {
            isPageRefreshed = true;
        }

        Session["SessionId"] = System.Guid.NewGuid().ToString();
        ViewState["ViewStateId"] = Session["SessionId"].ToString();
    } 
}