private void trackLineLegend(XYChart c1,  int mousec1X, int chartNo)
        {
            // Clear the current dynamic layer and get the DrawArea object to draw on it.

            if (_multiChart == null)
                d1 = c1.initDynamicLayer();
            else
            { }


            // The plot area object
            PlotArea plotArea1 = c1.getPlotArea();

            // Get the data x-value that is nearest to the mouse, and find its pixel coordinate.
            double xValue1 = c1.getNearestXValue(mousec1X);
            int xCoor1 = c1.getXCoor(xValue1);

            // Draw a vertical track line at the x-position
            d1.vline(plotArea1.getTopY(), plotArea1.getBottomY(), xCoor1, 0xaaaaaa);

            // Container to hold the legend entries
            ArrayList legendEntries = new ArrayList();

            // Iterate through all layers to build the legend array
            for (int i = 0; i < c1.getLayerCount(); ++i)
            {
                Layer layer = c1.getLayerByZ(i);

                // The data array index of the x-value
                int xIndex = layer.getXIndexOf(xValue1);

                // Iterate through all the data sets in the layer
                for (int j = 0; j < layer.getDataSetCount(); ++j)
                {
                    ChartDirector.DataSet dataSet = layer.getDataSetByZ(j);

                    // We are only interested in visible data sets with names
                    string dataName = dataSet.getDataName();
                    if (!string.IsNullOrEmpty(dataName))
                    {
                        if (chartNo == 1)
                        {
                            TabConfig tap = APList.FirstOrDefault(p => p.APName == dataName);
                            if (tap != null && tap.IsChecked == false)
                                continue;
                        }
                        else
                        {
                            PerformancePerameter item = OTWPerformanceParameterList.FirstOrDefault(p => p.ParameterName == dataName && p.IsChecked == true);
                            if (item == null)
                                continue;      
                        }

                    }


                    int color = dataSet.getDataColor();
                    if ((!string.IsNullOrEmpty(dataName)) && (color != Chart.Transparent))
                    {
                        // Build the legend entry, consist of the legend icon, name and data value.
                        string str = dataSet.getLegendIcon();
                        double dataValue = dataSet.getValue(xIndex);
                        legendEntries.Add("<*block*>" + dataSet.getLegendIcon() + " " + dataName + " : " + ((
                            dataValue == Chart.NoValue) ? "N/A" : c1.formatValue(dataValue, "{value|P4}")) + "<*/*>");

                        // Draw a track dot for data points within the plot area
                        int yCoor = c1.getYCoor(dataSet.getPosition(xIndex), dataSet.getUseYAxis());
                        if ((yCoor >= plotArea1.getTopY()) && (yCoor <= plotArea1.getBottomY()))
                        {
                            d1.circle(xCoor1, yCoor, 4, 4, color, color);
                        }
                    }
                }
            }

            // Create the legend by joining the legend entries
            legendEntries.Reverse();
            string legendText = "<*block,maxWidth=" + plotArea1.getWidth() + "*><*block*><*font=Arial Bold*>["
                 + c1.xAxis().getFormattedLabel(xValue1, "hh:nn:ss") + "]<*/*>   " + String.Join(
                "    ", (string[])legendEntries.ToArray(typeof(string))) + "<*/*>";

            // Display the legend on the top of the plot area
      
            TTFText t = d1.text(legendText, "Arial Bold", 10);
            int chart1Height = 0;
            if(_multiChart != null)
            chart1Height = _multiChart.getChart(0).getHeight();
            if (chartNo == 1)
            t.draw(plotArea1.getLeftX(), plotArea1.getTopY() - 3, 0x000000, Chart.BottomLeft);
            else
                t.draw(plotArea1.getLeftX(), plotArea1.getTopY() + chart1Height - 50, 0x000000, Chart.BottomLeft);
            //  t.draw(plotArea.getLeftX() + 5, plotArea.getTopY() - 3, 0x000000, Chart.BottomCenter);
        }
		
		
		private void WPFChartViewer1_MouseMovePlotArea(object sender, MouseEventArgs e)
        {
            //var viewer = sender as WPFChartViewer;
            //trackLineLegend((XYChart)viewer.Chart, viewer.PlotAreaMouseX);
            //viewer.updateDisplay();

            WPFChartViewer viewer = (WPFChartViewer)sender;
            MultiChart m = (MultiChart)viewer.Chart;
            _multiChart.removeDynamicLayer();
            d1 = _multiChart.initDynamicLayer();

            trackLineLegend((XYChart)_multiChart.getChart(0), viewer.PlotAreaMouseX, 1);
             trackLineLegend((XYChart)_multiChart.getChart(1), viewer.PlotAreaMouseX, 2);
             viewer.updateDisplay();
        }
		
		
		//Draw Chart Method
		private void drawChart(WPFChartViewer viewer)
        {
            if(_multiChart != null)
            {
                _multiChart.removeDynamicLayer();
                _multiChart = null;
            }

            Dictionary<string, int> graphNameAndDisplayValue = new Dictionary<string, int>();

            DateTime viewPortStartDate = Chart.NTime(viewer.getValueAtViewPort("x", viewer.ViewPortLeft));
            DateTime viewPortEndDate = Chart.NTime(viewer.getValueAtViewPort("x", viewer.ViewPortLeft +
                viewer.ViewPortWidth));

            // Get the array indexes that corresponds to the visible start and end dates
            /* int startIndex = (int)Math.Floor(Chart.bSearch(timeStamps, viewPortStartDate));
             int endIndex = (int)Math.Ceiling(Chart.bSearch(timeStamps, viewPortEndDate));*/

            int startIndex = (int)Math.Floor(Chart.bSearch(_timeSpanList.ToArray(), viewPortStartDate));
            int endIndex = (int)Math.Ceiling(Chart.bSearch(_timeSpanList.ToArray(), viewPortEndDate));
            int noOfPoints = endIndex - startIndex + 1;

            // Extract the part of the data array that are visible.
            //  DateTime[] viewPortTimeStamps = (DateTime[])Chart.arraySlice(timeStamps, startIndex, noOfPoints);
            DateTime[] viewPortTimeStamps = (DateTime[])Chart.arraySlice(_timeSpanList.ToArray(), startIndex, noOfPoints);

            //
            // At this stage, we have extracted the visible data. We can use those data to plot the chart.
            //

            //================================================================================
            // Configure overall chart appearance.
            //================================================================================

            double width = mainGrid.ColumnDefinitions[1].ActualWidth;
            double height = mainGrid.RowDefinitions[0].ActualHeight + mainGrid.RowDefinitions[1].ActualHeight;

            // Create an XYChart object of size 640 x 400 pixels
            XYChart c1 = new XYChart((int)width, (int)height/2, 0xffffff, 0x000000, 1);
            XYChart c2 = new XYChart((int)width, (int)height /2, 0xffffff, 0x000000, 1);

            // XYChart c = new XYChart(, winChartViewer1.Height);

            // Set the plotarea at (55, 55) with width 80 pixels less than chart width, and height 90 pixels
            // less than chart height. Use a vertical gradient from light blue (f0f6ff) to sky blue (a0c0ff)
            // as background. Set border to transparent and grid lines to white (ffffff).

            //c.setPlotArea(55, 55, c.getWidth() - 120, c.getHeight() - 90, c.linearGradientColor(0, 55, 0,
            //    c.getHeight() - 35, 0xf0f6ff, 0xa0c0ff), -1, Chart.Transparent, 0xffffff, 0xffffff);

            c1.setPlotArea(55, 100, c1.getWidth() - 80, c1.getHeight() - 130, 0xffffff, -1, 0x6A6666, 0xD8D5D5, 0xD8D5D5);
            c2.setPlotArea(55, 100, c1.getWidth() - 80, c2.getHeight() - 130, 0xffffff, -1, 0x6A6666, 0xD8D5D5, 0xD8D5D5);

            // As the data can lie outside the plotarea in a zoomed chart, we need enable clipping.
            c1.setClipping();
            c2.setClipping();

            // Add a title to the chart using 15pt Arial Bold font
            c1.addTitle(" Moxa Radio Analyzer RSSI And Performace Logs ", "Arial Bold", 15);

            // Set legend icon style to use line style icon, sized for 10pt font
            c1.getLegend().setLineStyleKey();
            c1.getLegend().setFontSize(10);

            c2.getLegend().setLineStyleKey();
            c2.getLegend().setFontSize(10);

            // Set the x and y axis stems to transparent and the label font to 10pt Arial
            c1.xAxis().setColors(Chart.Transparent);
            c1.yAxis().setColors(Chart.Transparent);
            c1.xAxis().setLabelStyle("Arial", 10);
            c1.yAxis().setLabelStyle("Arial", 10);

            c2.xAxis().setColors(Chart.Transparent);
            c2.yAxis().setColors(Chart.Transparent);
            c2.xAxis().setLabelStyle("Arial", 10);
            c2.yAxis().setLabelStyle("Arial", 10);

           // c2.yAxis().setLinearScale(0, 50);

            // Add axis title using 10pt Arial Bold font
            c1.yAxis().setTitle("Signal Strength", "Arial Bold", 10);

            foreach (PerformancePerameter item in OTWPerformanceParameterList)
            {
                if (item.IsChecked)
                {
                    string yAxis2Title = "";
                    switch (item.ParameterName)
                    {
                        case KEY_BAND:
                            yAxis2Title = KEY_BAND;
                            break;
                        case KEY_JTR:
                            yAxis2Title = KEY_JTR;
                            break;
                        case KEY_PCTLOSS:
                            yAxis2Title = KEY_PCTLOSS;
                            break;
                        case KEY_PERPCTLOSS:
                            yAxis2Title = KEY_PERPCTLOSS;
                            break;
                    }
                    c2.yAxis().setTitle(yAxis2Title, "Arial Bold", 10);
                }
            }

            foreach (PerformancePerameter item in WTOPerformanceParameterList)
            {
                if (item.IsChecked)
                {
                    string yAxis2Title = "";
                    switch (item.ParameterName)
                    {
                        case KEY_BAND:
                            yAxis2Title = KEY_BAND;
                            break;
                        case KEY_JTR:
                            yAxis2Title = KEY_JTR;
                            break;
                        case KEY_PCTLOSS:
                            yAxis2Title = KEY_PCTLOSS;
                            break;
                        case KEY_PERPCTLOSS:
                            yAxis2Title = KEY_PERPCTLOSS;
                            break;
                    }
                    c2.yAxis().setTitle(yAxis2Title, "Arial Bold", 10);
                }
            }

            //================================================================================
            // Add data to chart
            //================================================================================

            //
            // In this example, we represent the data by lines. You may modify the code below to use other
            // representations (areas, scatter plot, etc).
            //

            // Add a line layer for the lines, using a line width of 2 pixels
            LineLayer layer = c1.addLineLayer2();
            layer.setLineWidth(2);

            // In this demo, we do not have too many data points. In real code, the chart may contain a lot
            // of data points when fully zoomed out - much more than the number of horizontal pixels in this
            // plot area. So it is a good idea to use fast line mode.
            layer.setFastLineMode();
            layer.setXData(viewPortTimeStamps);

            // Add a line layer for the lines, using a line width of 2 pixels
            LineLayer layer2 = c2.addLineLayer2();
            layer2.setLineWidth(2);
            layer2.setFastLineMode();

            bool handoffDrawn = false;
            foreach (string key in _dicTapNameAndTapMACAddress.Keys)
            {
                string graphName = key;

                string equipName = _dicTapNameAndTapMACAddress[graphName];

                if (_dicTapMacAndValues.ContainsKey(equipName))
                {
                    string dataSeriesName = graphName;

                    double[] dataSeriesValue = _dicTapMacAndValues[equipName].ToArray();
                    DateTime[] dataDateTimeForAxisY = _dicTapMacAndDateTimeValues[equipName].ToArray();
                    int countDateTimeHnadOff = dataDateTimeForAxisY.Count();

                    TabConfig tap = APList.FirstOrDefault(p => p.APName == graphName);

                    double[] viewPortDataSeries = (double[])Chart.arraySlice(dataSeriesValue, startIndex, noOfPoints);

                    LineLayer layerTest = null;
                    if (_tapMacAddressAndInfo.ContainsKey(equipName))
                        layerTest = c1.addLineLayer(dataSeriesValue, _tapMacAddressAndInfo[equipName].color, dataSeriesName);
                    else
                        layerTest = c1.addLineLayer(dataSeriesValue, _colorGenerator.NextColorInt(), dataSeriesName);
                    layerTest.setXData(dataDateTimeForAxisY);
                    layerTest.setLineWidth(2);

                    if (tap != null && tap.IsChecked == false)
                    {
                        layerTest.setLineWidth(0);
                    }
                    else if (tap != null && tap.IsChecked == true)
                    {
                        layerTest.setLineWidth(2);
                    }

                    if (handoffDrawn == false)
                    {
                        handoffDrawn = true;
                        if (_handOffEquipment.Count > 0 && _timeSpanHandOff.Count > 0)
                        {
                            int x = 0;
                            foreach (string handoff in _handOffEquipment)
                            {
                                string[] separators = { "," };
                                string[] word = handoff.Split(separators, StringSplitOptions.RemoveEmptyEntries);

                                DateTime time = _timeSpanHandOff[x];
                                DateTime[] dateTimeHandOffList2 = new DateTime[2];
                                dateTimeHandOffList2[0] = time;
                                dateTimeHandOffList2[1] = time;

                                int indexStartTabHandoff = _minValue + 10;
                                int indexEndTabHandoff = _maxValue + (-10);

                                double[] dataY0 = { indexStartTabHandoff, indexEndTabHandoff }; // Define value for plot trackinfo fix value.
                                LineLayer layerTrackInfo = c1.addLineLayer(dataY0, c1.dashLineColor(0xff3333)); // fix color 
                                layerTrackInfo.setXData(dateTimeHandOffList2);

                                layerTrackInfo.addCustomDataLabel(0, 0, " " + word[0] + " \n " + word[1] + "\n" + word[2] + "\n" + word[3], "Arial Bold");
                                layerTrackInfo.setLineWidth(2);
                                layerTrackInfo.getDataSet(0).setDataSymbol(Chart.SquareSymbol, 7);

                                x++;
                            }
                        }
                    }
                } // end if mapEquipAndValue

                //} //end if mapGrapNameAndEquip
            } // end For loop 

            /**** Case Add Mark BAr  ******/

            //if (_valueMarkLineList.Count() != 0)
            //{
            //    foreach (int n in _valueMarkLineList)
            //    {
            //        c.yAxis().addMark(n, 0x008000 + (1500 + n), " Line : " + n).setLineWidth(2);
            //    }

            //} // End if  value mark line 

            //AddTunnelStatus(c);
            //AddModemStatus(c);

            foreach (PerformancePerameter item in OTWPerformanceParameterList)
            {
                if (!item.IsChecked)
                {
                    continue;
                }
                if (!_dicPerVariableAndValueOTW.ContainsKey(item.ParameterName))
                {
                    continue;
                }
                string dataSeriesName = item.ParameterName;
                double[] dataSeriesValue = _dicPerVariableAndValueOTW[item.ParameterName].ToArray();
                DateTime[] dataDateTimeForAxisY = _dicIperVariableAndDateTimeOTW[item.ParameterName].ToArray();

                double[] viewPortDataSeries = (double[])Chart.arraySlice(dataSeriesValue, startIndex, noOfPoints);

                LineLayer layerPerformace = c2.addLineLayer(dataSeriesValue, _dicIperVariableAndColorOTW[item.ParameterName], dataSeriesName);
                layerPerformace.setXData(dataDateTimeForAxisY);
                layerPerformace.setLineWidth(2);
            }


            foreach (PerformancePerameter item in WTOPerformanceParameterList)
            {
                if (!item.IsChecked)
                {
                    continue;
                }
                if (!_dicPerVariableAndValueWTO.ContainsKey(item.ParameterName))
                {
                    continue;
                }
                string dataSeriesName = item.ParameterName;
                double[] dataSeriesValue = _dicPerVariableAndValueWTO[item.ParameterName].ToArray();
                DateTime[] dataDateTimeForAxisY = _dicIperVariableAndDateTimeWTO[item.ParameterName].ToArray();

                double[] viewPortDataSeries = (double[])Chart.arraySlice(dataSeriesValue, startIndex, noOfPoints);

                LineLayer layerPerformance = c2.addLineLayer(dataSeriesValue, _dicIperVariableAndColorWTO[item.ParameterName], dataSeriesName);
                layerPerformance.setXData(dataDateTimeForAxisY);
                layerPerformance.setLineWidth(2);
            }

            //================================================================================
            // Configure axis scale and labelling
            //================================================================================

            //Set the x - axis as a date / time axis with the scale according to the view port x range.
            //viewer.syncDateAxisWithViewPort("x", c.xAxis());

            // For the automatic y-axis labels, set the minimum spacing to 30 pixels.
            c1.yAxis().setTickDensity(20);
            //c.yAxis2().setTickDensity(20);
            c2.yAxis().setTickDensity(20);

            c2.yAxis().setLinearScale(0, 50);
            //
            // In this demo, the time range can be from a few years to a few days. We demonstrate how to set
            // up different date/time format based on the time range.
            //

            // If all ticks are yearly aligned, then we use "yyyy" as the label format.
            c1.xAxis().setFormatCondition("align", 360 * 86400);
            c1.xAxis().setLabelFormat("{value|yyyy}");

            c2.xAxis().setFormatCondition("align", 360 * 86400);
            c2.xAxis().setLabelFormat("{value|yyyy}");


            // If all ticks are monthly aligned, then we use "mmm yyyy" in bold font as the first label of a
            // year, and "mmm" for other labels.
            c1.xAxis().setFormatCondition("align", 30 * 86400);
            c1.xAxis().setMultiFormat(Chart.StartOfYearFilter(), "<*font=bold*>{value|mmm<*br*>yyyy}",
                Chart.AllPassFilter(), "{value|mmm}");

            c2.xAxis().setFormatCondition("align", 30 * 86400);
            c2.xAxis().setMultiFormat(Chart.StartOfYearFilter(), "<*font=bold*>{value|mmm<*br*>yyyy}",
                Chart.AllPassFilter(), "{value|mmm}");

            // If all ticks are daily algined, then we use "mmm dd<*br*>yyyy" in bold font as the first
            // label of a year, and "mmm dd" in bold font as the first label of a month, and "dd" for other
            // labels.
            c1.xAxis().setFormatCondition("align", 86400);
            c1.xAxis().setMultiFormat(Chart.StartOfYearFilter(),
                "<*block,halign=left*><*font=bold*>{value|mmm dd<*br*>yyyy}", Chart.StartOfMonthFilter(),
                "<*font=bold*>{value|mmm dd}");
            c1.xAxis().setMultiFormat2(Chart.AllPassFilter(), "{value|dd}");

            c1.xAxis().setFormatCondition("align", 3600);
            c1.xAxis().setLabelFormat("{value|hh:nn}");

            c1.xAxis().setFormatCondition("align", 3600);
            c1.xAxis().setLabelFormat("{value|hh:nn:ss}");


            // For all other cases (sub-daily ticks), use "hh:nn<*br*>mmm dd" for the first label of a day,
            // and "hh:nn" for other labels.
            c1.xAxis().setFormatCondition("else");
            c1.xAxis().setMultiFormat(Chart.StartOfDayFilter(), "<*font=bold*>{value|hh:nn:ss}",
                Chart.AllPassFilter(), "{value|hh:nn:ss.ff}");


            c2.xAxis().setFormatCondition("align", 86400);
            c2.xAxis().setMultiFormat(Chart.StartOfYearFilter(),
                "<*block,halign=left*><*font=bold*>{value|mmm dd<*br*>yyyy}", Chart.StartOfMonthFilter(),
                "<*font=bold*>{value|mmm dd}");
            c2.xAxis().setMultiFormat2(Chart.AllPassFilter(), "{value|dd}");

            c2.xAxis().setFormatCondition("align", 3600);
            c2.xAxis().setLabelFormat("{value|hh:nn}");

            c2.xAxis().setFormatCondition("align", 3600);
            c2.xAxis().setLabelFormat("{value|hh:nn:ss}");


            // For all other cases (sub-daily ticks), use "hh:nn<*br*>mmm dd" for the first label of a day,
            // and "hh:nn" for other labels.
            c2.xAxis().setFormatCondition("else");
            c2.xAxis().setMultiFormat(Chart.StartOfDayFilter(), "<*font=bold*>{value|hh:nn:ss}",
                Chart.AllPassFilter(), "{value|hh:nn:ss.ff}");

            viewer.syncLinearAxisWithViewPort("x", c1.xAxis());
            //viewer.syncLinearAxisWithViewPort("y", c1.yAxis());

            viewer.syncLinearAxisWithViewPort("x", c2.xAxis());
            //viewer.syncLinearAxisWithViewPort("y", c2.yAxis());
            //================================================================================
            // Output the chart
            //================================================================================

            // We need to update the track line too. If the mouse is moving on the chart (eg. if 
            // the user drags the mouse on the chart to scroll it), the track line will be updated

            // in the MouseMovePlotArea event. Otherwise, we need to update the track line here.
            if (!viewer.IsInMouseMoveEvent)
            {
                trackLineLegend(c1, (null == viewer.Chart) ? c1.getPlotArea().getRightX() :
                viewer.PlotAreaMouseX, 1);

                trackLineLegend(c2, (null == viewer.Chart) ? c2.getPlotArea().getRightX() :
               viewer.PlotAreaMouseX, 2);
            }

            _multiChart = new MultiChart((int)width, (int)height);
            _multiChart.addChart(0, 0, c1);
            _multiChart.addChart(0, c1.getHeight(), c2);
            _multiChart.setMainChart(_multiChart);
            viewer.Chart = _multiChart;
        }