Export ReportViewer to Word Excel PDF with ObjectDataSource using C# and VB.Net in ASP.Net

This is my C #, the report is displayed on the screen, there is no problem with the query, only in the toolbar when exporting (disquette purple) when selecting any of its elements (Excel, PDF, Word) does not run no action ... as off ... not working

ClassObject.ClassOne co = new ClassObject.ClassOne();

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!this.IsPostBack)
            {
                String Valor = Request.QueryString["Valor"];
                co.IdAcc = Convert.ToInt32(Valor);

                //Query Stored Procedure
                DataTable _dt = _rpt.ObtainData("Stored Procedure Query");
                ReportDataSource _rds = new ReportDataSource("ds", _dt);

                ReportViewer rp = ReportViewer1;
                rp.LocalReport.DataSources.Clear();

                rp.ProcessingMode = ProcessingMode.Local;
                rp.LocalReport.DataSources.Add(_rds);
                rp.LocalReport.ReportPath = @"report.rdlc";
                rp.LocalReport.Refresh();
            }
        }