Whenever you insert one record and after that if u click on refresh, again the same record insert once again. To avoid that we can use the following code in page load. And whereever u want simply u can use
if (!isrefresh){ }
if (Session["postid"] != null && ViewState["postid"] != null)
{
if (ViewState["postid"].ToString() != Session["postid"
].ToString())
IsPageRefresh =
true;
}
Session["postid"] = System.Guid.NewGuid().ToString();
ViewState["postid"] = Session["postid"];
