想把画上去的波形加粗，请问有什么语句吗？

比如，这是我编的一段程序，画了几段不同的直线，像分段函数是的，请问怎么可以加粗这条曲线呢？就像最后一句改颜色的那样！谢谢！！！
 
WaveformDataBlock baoluoBlock = null;//P71 固定格式的3句
            WaveformDataSource baoluoMywave = null;
            UserDataSources MySources = UserDataSources.Instance;
            //UserDataSources MySources = UserDataSources.Instance;
            MySources.RemoveDatasource(MySources["CSIDemo.baoluoMyResult"]);
            baoluoMywave = MySources.CreateWaveForm("CSIDemo.baoluoMyResult", "限制曲线");
            baoluoMywave.XUnits = m_MySource.XUnit;
            baoluoMywave.YUnits = m_MySource.YUnit;
            baoluoMywave.DisplayRangeFrom = 60;
            baoluoMywave.DisplayRangeTo = -60;

            int num = Segments[1].NumberOfSamples; ;

            double[] baoluo = new double[num];

            //textBox4.Text = Conversion.ConvertDoubleToString(baoluo.Length, 9, null);

            for (int i = 0; i <= 0.0125 * m_Recorder.HighSamplingFrequency; i++)//绘制上包络线
            {
                baoluo[i] = 50;//直线
            }

            for (int i = (int)(0.0125 * m_Recorder.HighSamplingFrequency + 1); i <= 0.0825 * m_Recorder.HighSamplingFrequency; i++)
            {
                baoluo[i] = 29 + (0.0825 * m_Recorder.HighSamplingFrequency - i) * (50 - 29) / (0.0825 * m_Recorder.HighSamplingFrequency - 0.0125 * m_Recorder.HighSamplingFrequency);
            }


            for (int i = (int)(0.0825 * m_Recorder.HighSamplingFrequency + 1); i < baoluo.Length; i++)
            {
                baoluo[i] = 29;

            }
            
            baoluoBlock = baoluoMywave.AddDataBlock(Segments[1].StartTime, Segments[1].SampleInterval);
            baoluoBlock.WriteWaveform(0, baoluo);
            //textBox5.Text = "5";
            string[] baoluodatasource = new string[] { "CSIDemo.baoluoMyResult" };
            display1.AddDataSources(baoluodatasource);
            display1.TimeDisplay.CtlLayout.ActiveTrace.TraceProp.PrimaryColor = 0x0000FF; // red

版主能帮忙解答一下吗？