protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) // If page loads for first time
{
// Assign the Session["update"] with unique value
Session["update"] = Server.UrlEncode(System.DateTime.Now.ToString());
//=============== Page load code =========================
//============== End of Page load code ===================
}
}
protected void btnDisplay_Click(object sender, EventArgs e)
{
// If page not Refreshed
if (Session["update"].ToString() == ViewState["update"].ToString())
{
//=============== On click event code =========================
lblDisplayAddedName.Text = txtName.Text;
//=============== End of On click event code ==================
// After the event/ method, again update the session
Session["update"] = Server.UrlEncode(System.DateTime.Now.ToString());
}
else // If Page Refreshed
{
// Do nothing
}
}
protected override void OnPreRender(EventArgs e)
{
base.OnPreRender(e);
ViewState["update"] = Session["update"];
}