protected void Page_Load(object sender, EventArgs e) { if ((String)Session["email"] == "" || Session["email"] == null) { Response.Redirect("login.aspx"); } if (!IsPostBack) { inicial = 0; final = inicial + 10; } else { final = inicial + 10; } MaterialCEN matCEN = new MaterialCEN(); IList <MaterialEN> lista = matCEN.Listar(inicial, final); List <MaterialEN> lParsed = lista as List <MaterialEN>; ListView1.DataSource = lParsed; ListView1.DataBind(); }