private void AddDetails(int age, string name)
        {
            invdb = new InventoryDB();
            Android.App.AlertDialog.Builder dialog = new AlertDialog.Builder(this);
            AlertDialog alert = dialog.Create();

            alert.SetTitle("Message");
            alert.SetButton("ok", (cv, EventArgs) =>
            {
            });

            boobj.name = name;
            boobj.age  = age;


            if (invdb.CreateEmployee(boobj))
            {
                var nxtpage = new Intent(this, typeof(ListViewActivity));
                StartActivity(nxtpage);
            }
            else
            {
                alert.SetMessage("row not added ");
                alert.Show();
            }
        }