How to insert a graph as subreport in WPF Report Viewer

I'm developing an application in WPF and I need to insert some graphics into a report. I created two .RDLC files one called InfoGraphic and another of SubInfoGraphic. In my subreport I would like to add a graph containing some bank information that is obtained through a DataSet.

private void ImpRelatorio(object sender, RoutedEventArgs e)
        {

            RVInfoGrafico.Reset();
            RVInfoGrafico.LocalReport.DataSources.Clear();
            RVInfoGrafico.LocalReport.SubreportProcessing += new SubreportProcessingEventHandler(MSubreportProcessingEventHandler);

            DataTable dt = GetData2();
            ReportDataSource rds = new ReportDataSource("DataSet1", dt);
            RVInfoGrafico.LocalReport.DataSources.Add(rds);
            RVInfoGrafico.LocalReport.ReportEmbeddedResource = "Projeto.InfoGrafico.rdlc";

            RVInfoGrafico.ProcessingMode = ProcessingMode.Local;
            RVInfoGrafico.RefreshReport();

        }
        void MSubreportProcessingEventHandler(object sender, SubreportProcessingEventArgs e)
        {
            DataTable dt9 = GetData4();
            e.DataSources.Add(new ReportDataSource("DataSet1",dt9));
        }