private void Mostrar()
        {
            ReportViewer1.Reset();
            DataTable        dsC        = PreparaAcceso.BuscarTecnicoRut(Convert.ToInt32(Session["rut"]), cadenaConexion);
            ReportDataSource datasource = new ReportDataSource("DataSet1", dsC);

            ReportViewer1.LocalReport.DataSources.Add(datasource);
            ReportViewer1.LocalReport.ReportPath = Server.MapPath("Reportes/ReporteTecnicos.rdlc");
            ReportViewer1.LocalReport.Refresh();
        }