void BindData()
        {
            ClassAdminPosition ap = new ClassAdminPosition();
            DataTable          dt = ap.GetAdminPosition("", "");

            GridView1.DataSource = dt;
            GridView1.DataBind();
            SetViewState(dt);
        }
        protected void btnSearchRefresh_Click(object sender, EventArgs e)
        {
            ClearData();
            ClassAdminPosition ap = new ClassAdminPosition();
            DataTable          dt = ap.GetAdminPosition("", "");

            GridView1.DataSource = dt;
            GridView1.DataBind();
            SetViewState(dt);
        }