ChartDirector 6.2 (.NET Edition)

Scatter Trend Chart




This example demonstrates linear regression trend line fitting together with scatter layers.

The chart in this example has 4 layers - 2 scatter layers created using XYChart.addScatterLayer to show the data points, and two trend layers created using XYChart.addTrendLayer2 for the two trend lines.

Source Code Listing

[Windows Forms - C# version] NetWinCharts\CSharpWinCharts\scattertrend.cs
using System;
using ChartDirector;

namespace CSharpChartExplorer
{
    public class scattertrend : DemoModule
    {
        //Name of demo module
        public string getName() { return "Scatter Trend Chart"; }

        //Number of charts produced in this demo module
        public int getNoOfCharts() { return 1; }

        //Main code for creating chart.
        //Note: the argument chartIndex is unused because this demo only has 1 chart.
        public void createChart(WinChartViewer viewer, int chartIndex)
        {
            // The XY data of the first data series
            double[] dataX0 = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59};
            double[] dataY0 = {3.6, 2.8, 2.5, 2.3, 3.8, 3.0, 3.8, 5.0, 6.0, 3.3};

            // The XY data of the second data series
            double[] dataX1 = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59};
            double[] dataY1 = {1.6, 1.8, 0.8, 0.5, 1.3, 1.5, 2.3, 2.4, 2.9, 1.5};

            // Tool tip formats for data points and trend lines
            string scatterToolTip = "title='{dataSetName}: Response time at {x} TPS: {value} sec'";
            string trendToolTip = "title='Slope = {slope|4} sec/TPS; Intercept = {intercept|4} sec'"
                ;

            // Create a XYChart object of size 450 x 420 pixels
            XYChart c = new XYChart(450, 420);

            // Set the plotarea at (55, 65) and of size 350 x 300 pixels, with white background and
            // a light grey border (0xc0c0c0). Turn on both horizontal and vertical grid lines with
            // light grey color (0xc0c0c0)
            c.setPlotArea(55, 65, 350, 300, 0xffffff, -1, 0xc0c0c0, 0xc0c0c0, -1);

            // Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt
            // Times Bold Italic font. Set the background and border color to Transparent.
            c.addLegend(50, 30, false, "Times New Roman Bold Italic", 12).setBackground(
                Chart.Transparent);

            // Add a title to the chart using 18 point Times Bold Itatic font.
            c.addTitle("Server Performance", "Times New Roman Bold Italic", 18);

            // Add titles to the axes using 12pt Arial Bold Italic font
            c.yAxis().setTitle("Response Time (sec)", "Arial Bold Italic", 12);
            c.xAxis().setTitle("Server Load (TPS)", "Arial Bold Italic", 12);

            // Set the axes line width to 3 pixels
            c.yAxis().setWidth(3);
            c.xAxis().setWidth(3);

            // Add a scatter layer using (dataX0, dataY0)
            ScatterLayer scatter1 = c.addScatterLayer(dataX0, dataY0, "Server AAA",
                Chart.DiamondSymbol, 11, 0x008000);
            scatter1.setHTMLImageMap("", "", scatterToolTip);

            // Add a trend line layer for (dataX0, dataY0)
            TrendLayer trend1 = c.addTrendLayer2(dataX0, dataY0, 0x008000);
            trend1.setLineWidth(3);
            trend1.setHTMLImageMap("", "", trendToolTip);

            // Add a scatter layer for (dataX1, dataY1)
            ScatterLayer scatter2 = c.addScatterLayer(dataX1, dataY1, "Server BBB",
                Chart.TriangleSymbol, 9, 0x6666ff);
            scatter2.setHTMLImageMap("", "", scatterToolTip);

            // Add a trend line layer for (dataX1, dataY1)
            TrendLayer trend2 = c.addTrendLayer2(dataX1, dataY1, 0x6666ff);
            trend2.setLineWidth(3);
            trend2.setHTMLImageMap("", "", trendToolTip);

            // Output the chart
            viewer.Chart = c;

            // include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable");
        }
    }
}

[Windows Forms - VB Version] NetWinCharts\VBNetWinCharts\scattertrend.vb
Imports System
Imports Microsoft.VisualBasic
Imports ChartDirector

Public Class scattertrend
    Implements DemoModule

    'Name of demo module
    Public Function getName() As String Implements DemoModule.getName
        Return "Scatter Trend Chart"
    End Function

    'Number of charts produced in this demo module
    Public Function getNoOfCharts() As Integer Implements DemoModule.getNoOfCharts
        Return 1
    End Function

    'Main code for creating chart.
    'Note: the argument chartIndex is unused because this demo only has 1 chart.
    Public Sub createChart(viewer As WinChartViewer, chartIndex As Integer) _
        Implements DemoModule.createChart

        ' The XY data of the first data series
        Dim dataX0() As Double = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59}
        Dim dataY0() As Double = {3.6, 2.8, 2.5, 2.3, 3.8, 3.0, 3.8, 5.0, 6.0, 3.3}

        ' The XY data of the second data series
        Dim dataX1() As Double = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59}
        Dim dataY1() As Double = {1.6, 1.8, 0.8, 0.5, 1.3, 1.5, 2.3, 2.4, 2.9, 1.5}

        ' Tool tip formats for data points and trend lines
        Dim scatterToolTip As String = _
            "title='{dataSetName}: Response time at {x} TPS: {value} sec'"
        Dim trendToolTip As String = _
            "title='Slope = {slope|4} sec/TPS; Intercept = {intercept|4} sec'"

        ' Create a XYChart object of size 450 x 420 pixels
        Dim c As XYChart = New XYChart(450, 420)

        ' Set the plotarea at (55, 65) and of size 350 x 300 pixels, with white background and a
        ' light grey border (0xc0c0c0). Turn on both horizontal and vertical grid lines with light
        ' grey color (0xc0c0c0)
        c.setPlotArea(55, 65, 350, 300, &Hffffff, -1, &Hc0c0c0, &Hc0c0c0, -1)

        ' Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt Times
        ' Bold Italic font. Set the background and border color to Transparent.
        c.addLegend(50, 30, False, "Times New Roman Bold Italic", 12).setBackground( _
            Chart.Transparent)

        ' Add a title to the chart using 18 point Times Bold Itatic font.
        c.addTitle("Server Performance", "Times New Roman Bold Italic", 18)

        ' Add titles to the axes using 12pt Arial Bold Italic font
        c.yAxis().setTitle("Response Time (sec)", "Arial Bold Italic", 12)
        c.xAxis().setTitle("Server Load (TPS)", "Arial Bold Italic", 12)

        ' Set the axes line width to 3 pixels
        c.yAxis().setWidth(3)
        c.xAxis().setWidth(3)

        ' Add a scatter layer using (dataX0, dataY0)
        Dim scatter1 As ScatterLayer = c.addScatterLayer(dataX0, dataY0, "Server AAA", _
            Chart.DiamondSymbol, 11, &H008000)
        scatter1.setHTMLImageMap("", "", scatterToolTip)

        ' Add a trend line layer for (dataX0, dataY0)
        Dim trend1 As TrendLayer = c.addTrendLayer2(dataX0, dataY0, &H008000)
        trend1.setLineWidth(3)
        trend1.setHTMLImageMap("", "", trendToolTip)

        ' Add a scatter layer for (dataX1, dataY1)
        Dim scatter2 As ScatterLayer = c.addScatterLayer(dataX1, dataY1, "Server BBB", _
            Chart.TriangleSymbol, 9, &H6666ff)
        scatter2.setHTMLImageMap("", "", scatterToolTip)

        ' Add a trend line layer for (dataX1, dataY1)
        Dim trend2 As TrendLayer = c.addTrendLayer2(dataX1, dataY1, &H6666ff)
        trend2.setLineWidth(3)
        trend2.setHTMLImageMap("", "", trendToolTip)

        ' Output the chart
        viewer.Chart = c

        ' include tool tip for the chart
        viewer.ImageMap = c.getHTMLImageMap("clickable")

    End Sub

End Class

[WPF - C#] NetWPFCharts\scattertrend.cs
using System;
using ChartDirector;

namespace CSharpWPFDemo
{
    public class scattertrend : DemoModule
    {
        //Name of demo module
        public string getName() { return "Scatter Trend Chart"; }

        //Number of charts produced in this demo module
        public int getNoOfCharts() { return 1; }

        //Main code for creating chart.
        //Note: the argument chartIndex is unused because this demo only has 1 chart.
        public void createChart(WPFChartViewer viewer, int chartIndex)
        {
            // The XY data of the first data series
            double[] dataX0 = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59};
            double[] dataY0 = {3.6, 2.8, 2.5, 2.3, 3.8, 3.0, 3.8, 5.0, 6.0, 3.3};

            // The XY data of the second data series
            double[] dataX1 = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59};
            double[] dataY1 = {1.6, 1.8, 0.8, 0.5, 1.3, 1.5, 2.3, 2.4, 2.9, 1.5};

            // Tool tip formats for data points and trend lines
            string scatterToolTip = "title='{dataSetName}: Response time at {x} TPS: {value} sec'";
            string trendToolTip = "title='Slope = {slope|4} sec/TPS; Intercept = {intercept|4} sec'"
                ;

            // Create a XYChart object of size 450 x 420 pixels
            XYChart c = new XYChart(450, 420);

            // Set the plotarea at (55, 65) and of size 350 x 300 pixels, with white background and
            // a light grey border (0xc0c0c0). Turn on both horizontal and vertical grid lines with
            // light grey color (0xc0c0c0)
            c.setPlotArea(55, 65, 350, 300, 0xffffff, -1, 0xc0c0c0, 0xc0c0c0, -1);

            // Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt
            // Times Bold Italic font. Set the background and border color to Transparent.
            c.addLegend(50, 30, false, "Times New Roman Bold Italic", 12).setBackground(
                Chart.Transparent);

            // Add a title to the chart using 18 point Times Bold Itatic font.
            c.addTitle("Server Performance", "Times New Roman Bold Italic", 18);

            // Add titles to the axes using 12pt Arial Bold Italic font
            c.yAxis().setTitle("Response Time (sec)", "Arial Bold Italic", 12);
            c.xAxis().setTitle("Server Load (TPS)", "Arial Bold Italic", 12);

            // Set the axes line width to 3 pixels
            c.yAxis().setWidth(3);
            c.xAxis().setWidth(3);

            // Add a scatter layer using (dataX0, dataY0)
            ScatterLayer scatter1 = c.addScatterLayer(dataX0, dataY0, "Server AAA",
                Chart.DiamondSymbol, 11, 0x008000);
            scatter1.setHTMLImageMap("", "", scatterToolTip);

            // Add a trend line layer for (dataX0, dataY0)
            TrendLayer trend1 = c.addTrendLayer2(dataX0, dataY0, 0x008000);
            trend1.setLineWidth(3);
            trend1.setHTMLImageMap("", "", trendToolTip);

            // Add a scatter layer for (dataX1, dataY1)
            ScatterLayer scatter2 = c.addScatterLayer(dataX1, dataY1, "Server BBB",
                Chart.TriangleSymbol, 9, 0x6666ff);
            scatter2.setHTMLImageMap("", "", scatterToolTip);

            // Add a trend line layer for (dataX1, dataY1)
            TrendLayer trend2 = c.addTrendLayer2(dataX1, dataY1, 0x6666ff);
            trend2.setLineWidth(3);
            trend2.setHTMLImageMap("", "", trendToolTip);

            // Output the chart
            viewer.Chart = c;

            // include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("clickable");
        }
    }
}

[ASP.NET Web Forms - C# version] NetWebCharts\CSharpASP\scattertrend.aspx
(Click here on how to convert this code to code-behind style.)
<%@ Page Language="C#" Debug="true" %>
<%@ Import Namespace="ChartDirector" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>

<!DOCTYPE html>

<script runat="server">

//
// Page Load event handler
//
protected void Page_Load(object sender, EventArgs e)
{
    // The XY data of the first data series
    double[] dataX0 = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59};
    double[] dataY0 = {3.6, 2.8, 2.5, 2.3, 3.8, 3.0, 3.8, 5.0, 6.0, 3.3};

    // The XY data of the second data series
    double[] dataX1 = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59};
    double[] dataY1 = {1.6, 1.8, 0.8, 0.5, 1.3, 1.5, 2.3, 2.4, 2.9, 1.5};

    // Tool tip formats for data points and trend lines
    string scatterToolTip = "title='{dataSetName}: Response time at {x} TPS: {value} sec'";
    string trendToolTip = "title='Slope = {slope|4} sec/TPS; Intercept = {intercept|4} sec'";

    // Create a XYChart object of size 450 x 420 pixels
    XYChart c = new XYChart(450, 420);

    // Set the plotarea at (55, 65) and of size 350 x 300 pixels, with white background and a light
    // grey border (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
    // (0xc0c0c0)
    c.setPlotArea(55, 65, 350, 300, 0xffffff, -1, 0xc0c0c0, 0xc0c0c0, -1);

    // Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt Times Bold
    // Italic font. Set the background and border color to Transparent.
    c.addLegend(50, 30, false, "Times New Roman Bold Italic", 12).setBackground(Chart.Transparent);

    // Add a title to the chart using 18 point Times Bold Itatic font.
    c.addTitle("Server Performance", "Times New Roman Bold Italic", 18);

    // Add titles to the axes using 12pt Arial Bold Italic font
    c.yAxis().setTitle("Response Time (sec)", "Arial Bold Italic", 12);
    c.xAxis().setTitle("Server Load (TPS)", "Arial Bold Italic", 12);

    // Set the axes line width to 3 pixels
    c.yAxis().setWidth(3);
    c.xAxis().setWidth(3);

    // Add a scatter layer using (dataX0, dataY0)
    ScatterLayer scatter1 = c.addScatterLayer(dataX0, dataY0, "Server AAA", Chart.DiamondSymbol, 11,
        0x008000);
    scatter1.setHTMLImageMap("", "", scatterToolTip);

    // Add a trend line layer for (dataX0, dataY0)
    TrendLayer trend1 = c.addTrendLayer2(dataX0, dataY0, 0x008000);
    trend1.setLineWidth(3);
    trend1.setHTMLImageMap("", "", trendToolTip);

    // Add a scatter layer for (dataX1, dataY1)
    ScatterLayer scatter2 = c.addScatterLayer(dataX1, dataY1, "Server BBB", Chart.TriangleSymbol, 9,
        0x6666ff);
    scatter2.setHTMLImageMap("", "", scatterToolTip);

    // Add a trend line layer for (dataX1, dataY1)
    TrendLayer trend2 = c.addTrendLayer2(dataX1, dataY1, 0x6666ff);
    trend2.setLineWidth(3);
    trend2.setHTMLImageMap("", "", trendToolTip);

    // Output the chart
    WebChartViewer1.Image = c.makeWebImage(Chart.PNG);

    // include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("");
}

</script>

<html>
<body>
    <chart:WebChartViewer id="WebChartViewer1" runat="server" />
</body>
</html>

[ASP.NET Web Forms - VB Version] NetWebCharts\VBNetASP\scattertrend.aspx
(Click here on how to convert this code to code-behind style.)
<%@ Page Language="VB" Debug="true" %>
<%@ Import Namespace="ChartDirector" %>
<%@ Register TagPrefix="chart" Namespace="ChartDirector" Assembly="netchartdir" %>

<!DOCTYPE html>

<script runat="server">

'
' Page Load event handler
'
Protected Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)

    ' The XY data of the first data series
    Dim dataX0() As Double = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59}
    Dim dataY0() As Double = {3.6, 2.8, 2.5, 2.3, 3.8, 3.0, 3.8, 5.0, 6.0, 3.3}

    ' The XY data of the second data series
    Dim dataX1() As Double = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59}
    Dim dataY1() As Double = {1.6, 1.8, 0.8, 0.5, 1.3, 1.5, 2.3, 2.4, 2.9, 1.5}

    ' Tool tip formats for data points and trend lines
    Dim scatterToolTip As String = "title='{dataSetName}: Response time at {x} TPS: {value} sec'"
    Dim trendToolTip As String = _
        "title='Slope = {slope|4} sec/TPS; Intercept = {intercept|4} sec'"

    ' Create a XYChart object of size 450 x 420 pixels
    Dim c As XYChart = New XYChart(450, 420)

    ' Set the plotarea at (55, 65) and of size 350 x 300 pixels, with white background and a light
    ' grey border (0xc0c0c0). Turn on both horizontal and vertical grid lines with light grey color
    ' (0xc0c0c0)
    c.setPlotArea(55, 65, 350, 300, &Hffffff, -1, &Hc0c0c0, &Hc0c0c0, -1)

    ' Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt Times Bold
    ' Italic font. Set the background and border color to Transparent.
    c.addLegend(50, 30, False, "Times New Roman Bold Italic", 12).setBackground(Chart.Transparent)

    ' Add a title to the chart using 18 point Times Bold Itatic font.
    c.addTitle("Server Performance", "Times New Roman Bold Italic", 18)

    ' Add titles to the axes using 12pt Arial Bold Italic font
    c.yAxis().setTitle("Response Time (sec)", "Arial Bold Italic", 12)
    c.xAxis().setTitle("Server Load (TPS)", "Arial Bold Italic", 12)

    ' Set the axes line width to 3 pixels
    c.yAxis().setWidth(3)
    c.xAxis().setWidth(3)

    ' Add a scatter layer using (dataX0, dataY0)
    Dim scatter1 As ScatterLayer = c.addScatterLayer(dataX0, dataY0, "Server AAA", _
        Chart.DiamondSymbol, 11, &H008000)
    scatter1.setHTMLImageMap("", "", scatterToolTip)

    ' Add a trend line layer for (dataX0, dataY0)
    Dim trend1 As TrendLayer = c.addTrendLayer2(dataX0, dataY0, &H008000)
    trend1.setLineWidth(3)
    trend1.setHTMLImageMap("", "", trendToolTip)

    ' Add a scatter layer for (dataX1, dataY1)
    Dim scatter2 As ScatterLayer = c.addScatterLayer(dataX1, dataY1, "Server BBB", _
        Chart.TriangleSymbol, 9, &H6666ff)
    scatter2.setHTMLImageMap("", "", scatterToolTip)

    ' Add a trend line layer for (dataX1, dataY1)
    Dim trend2 As TrendLayer = c.addTrendLayer2(dataX1, dataY1, &H6666ff)
    trend2.setLineWidth(3)
    trend2.setHTMLImageMap("", "", trendToolTip)

    ' Output the chart
    WebChartViewer1.Image = c.makeWebImage(Chart.PNG)

    ' include tool tip for the chart
    WebChartViewer1.ImageMap = c.getHTMLImageMap("")

End Sub

</script>

<html>
<body>
    <chart:WebChartViewer id="WebChartViewer1" runat="server" />
</body>
</html>

[ASP.NET MVC - Controller] NetMvcCharts\Controllers\ScattertrendController.cs
using System;
using System.Web.Mvc;
using ChartDirector;

namespace NetMvcCharts.Controllers
{
    public class ScattertrendController : Controller
    {
        //
        // Default Action
        //
        public ActionResult Index()
        {
            ViewBag.Title = "Scatter Trend Chart";
            createChart(ViewBag.Viewer = new RazorChartViewer(HttpContext, "chart1"));
            return View("~/Views/Shared/ChartView.cshtml");
        }

        //
        // Create chart
        //
        private void createChart(RazorChartViewer viewer)
        {
            // The XY data of the first data series
            double[] dataX0 = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59};
            double[] dataY0 = {3.6, 2.8, 2.5, 2.3, 3.8, 3.0, 3.8, 5.0, 6.0, 3.3};

            // The XY data of the second data series
            double[] dataX1 = {50, 55, 37, 24, 42, 49, 63, 72, 83, 59};
            double[] dataY1 = {1.6, 1.8, 0.8, 0.5, 1.3, 1.5, 2.3, 2.4, 2.9, 1.5};

            // Tool tip formats for data points and trend lines
            string scatterToolTip = "title='{dataSetName}: Response time at {x} TPS: {value} sec'";
            string trendToolTip = "title='Slope = {slope|4} sec/TPS; Intercept = {intercept|4} sec'";

            // Create a XYChart object of size 450 x 420 pixels
            XYChart c = new XYChart(450, 420);

            // Set the plotarea at (55, 65) and of size 350 x 300 pixels, with white background and a
            // light grey border (0xc0c0c0). Turn on both horizontal and vertical grid lines with light
            // grey color (0xc0c0c0)
            c.setPlotArea(55, 65, 350, 300, 0xffffff, -1, 0xc0c0c0, 0xc0c0c0, -1);

            // Add a legend box at (50, 30) (top of the chart) with horizontal layout. Use 12pt Times
            // Bold Italic font. Set the background and border color to Transparent.
            c.addLegend(50, 30, false, "Times New Roman Bold Italic", 12).setBackground(Chart.Transparent
                );

            // Add a title to the chart using 18 point Times Bold Itatic font.
            c.addTitle("Server Performance", "Times New Roman Bold Italic", 18);

            // Add titles to the axes using 12pt Arial Bold Italic font
            c.yAxis().setTitle("Response Time (sec)", "Arial Bold Italic", 12);
            c.xAxis().setTitle("Server Load (TPS)", "Arial Bold Italic", 12);

            // Set the axes line width to 3 pixels
            c.yAxis().setWidth(3);
            c.xAxis().setWidth(3);

            // Add a scatter layer using (dataX0, dataY0)
            ScatterLayer scatter1 = c.addScatterLayer(dataX0, dataY0, "Server AAA", Chart.DiamondSymbol,
                11, 0x008000);
            scatter1.setHTMLImageMap("", "", scatterToolTip);

            // Add a trend line layer for (dataX0, dataY0)
            TrendLayer trend1 = c.addTrendLayer2(dataX0, dataY0, 0x008000);
            trend1.setLineWidth(3);
            trend1.setHTMLImageMap("", "", trendToolTip);

            // Add a scatter layer for (dataX1, dataY1)
            ScatterLayer scatter2 = c.addScatterLayer(dataX1, dataY1, "Server BBB", Chart.TriangleSymbol,
                9, 0x6666ff);
            scatter2.setHTMLImageMap("", "", scatterToolTip);

            // Add a trend line layer for (dataX1, dataY1)
            TrendLayer trend2 = c.addTrendLayer2(dataX1, dataY1, 0x6666ff);
            trend2.setLineWidth(3);
            trend2.setHTMLImageMap("", "", trendToolTip);

            // Output the chart
            viewer.Image = c.makeWebImage(Chart.PNG);

            // include tool tip for the chart
            viewer.ImageMap = c.getHTMLImageMap("");
        }
    }
}

[ASP.NET MVC - View] NetMvcCharts\Views\Shared\ChartView.cshtml
@{ Layout = null; }

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>@ViewBag.Title</title>
</head>
<body style="margin:5px 0px 0px 5px">
    <div style="font:bold 18pt verdana;">
        @ViewBag.Title
    </div>
    <hr style="border:solid 1px #000080" />
    <div>
        @{
            if (ViewBag.Viewer is Array)
            {
                // Display multiple charts
                for (int i = 0; i < ViewBag.Viewer.Length; ++i)
                {
                    @:@Html.Raw(ViewBag.Viewer[i].RenderHTML())
                }
            }
            else
            {
                // Display one chart only
                @:@Html.Raw(ViewBag.Viewer.RenderHTML())
            }
        }
    </div>
</body>
</html>