protected void Session_Start()
{
Session["userid"] = null;
Session["username"] = null;
Session["fullname"] = null;
Session["email"] = null;
Session["password"] = null;
Session["avatar"] = null;
int cnt = Convert.ToInt32(Application["countvisitor"]) + 1;
Application["countvisitor"] = cnt;
Session["countvisitor"] = cnt;
CorevnNetContext db = new CorevnNetContext();
var adcnt = db.Counter.FirstOrDefault();
adcnt.CountVisitor = adcnt.CountVisitor + 1;
Session["countvisitor"] = adcnt.CountVisitor + 1;
db.SaveChanges();
}
