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Legend Box Multiple

How multiple chart areas can have their data placed in separate legend boxes.

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<%@ Page Language="C#" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>.netCHARTING Sample</title>
<script runat="server">

void Page_Load(Object sender,EventArgs e)
{

Chart.Type = ChartType.Combo;//Horizontal;
Chart.Width = 600;
Chart.Height = 350;
Chart.TempDirectory = "temp";
Chart.Debug = true;
Chart.DefaultLegendBox.ClearColors();
// Demonstrates how multiple chart areas can have their data placed in separate legend boxes.
// By default all the data is placed in the main legend box, however, if you instantiate a legend box for a
// particular chart area, it's data will automatically be placed in it.

// *DYNAMIC DATA NOTE*
// This sample uses random data to populate the chart. To populate
// a chart with database data see the following resources:
// - Classic samples folder
// - Help File > Data Tutorials
// - Sample: features/DataEngine.aspx
SeriesCollection mySC = getRandomData();

// Set up chart areas. For more info see sample: ChartAreaRelationships.aspx --------------
Axis y1 = new Axis();
Axis y2 = new Axis();
mySC[0].YAxis = y1;
mySC[1].YAxis = y1;
mySC[2].YAxis = y2;
mySC[3].YAxis = y2;

ChartArea ca2 = new ChartArea();
ChartArea ca3 = new ChartArea();
ChartArea ca4 = new ChartArea();

Chart.ChartArea.SeriesCollection.Add(mySC[0]);
ca2.SeriesCollection.Add(mySC[1]);
ca3.SeriesCollection.Add(mySC[2]);
ca4.SeriesCollection.Add(mySC[3]);

Chart.ExtraChartAreas.Add(ca2);
Chart.ExtraChartAreas.Add(ca3);
Chart.ExtraChartAreas.Add(ca4);
Chart.ChartAreaLayout.Mode = ChartAreaLayoutMode.HorizontalPriority;

// --------------

// Now we'll instantiate legend boxes for 2 of our areas. The main chart area already has a legend box.
ca2.LegendBox = new LegendBox();
ca3.LegendBox = new LegendBox();

// Orient the legend boxes in different positions.
ca3.LegendBox.Orientation = dotnetCHARTING.Orientation.Left;
ca2.LegendBox.Orientation = dotnetCHARTING.Orientation.Right;
Chart.ChartArea.LegendBox.Orientation = dotnetCHARTING.Orientation.Top;

// Another option besides instantiating a legend box for a chart area is to instruct the tite box to act as the legend box.
ca4.TitleBox.Position = TitleBoxPosition.FullWithLegend;

// This is all that is required, however, to control properties of this legend a box we'll need to instantiate a legend box
// and set them there. We will do so now.
ca4.LegendBox = new LegendBox();
ca4.LegendBox.LabelStyle.Font = new Font("Verdana",8);
// The same can be achieved by setting a font for the default entry
ca4.LegendBox.DefaultEntry.LabelStyle.Font = new Font("Verdana",8);

}

SeriesCollection getRandomData()
{
SeriesCollection SC = new SeriesCollection();
Random myR = new Random();
for(int a = 1; a < 5; a++)
{
Series s = new Series();
s.Name = "Series " + a;
for(int b = 1; b < 5; b++)
{
Element e = new Element();
e.Name = "Element " + b;
//e.YValue = -25 + myR.Next(50);
e.YValue = myR.Next(50);
s.Elements.Add(e);
}
SC.Add(s);
}

return SC;
}
</script>
</head>
<body>
<div style="text-align:center">
<dotnet:Chart id="Chart" runat="server" Width="568px" Height="344px">
</dotnet:Chart>
</div>
</body>
</html>

<%@ Page Language="vb" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>.netCHARTING Sample</title>
<script runat="server">

Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)

Chart.Type = ChartType.Combo 'Horizontal;
Chart.Width = 600
Chart.Height = 350
Chart.TempDirectory = "temp"
Chart.Debug = True
Chart.DefaultLegendBox.ClearColors()
' Demonstrates how multiple chart areas can have their data placed in separate legend boxes.
' By default all the data is placed in the main legend box, however, if you instantiate a legend box for a
' particular chart area, it's data will automatically be placed in it.

' *DYNAMIC DATA NOTE*
' This sample uses random data to populate the chart. To populate
' a chart with database data see the following resources:
' - Classic samples folder
' - Help File > Data Tutorials
' - Sample: features/DataEngine.aspx
Dim mySC As SeriesCollection = getRandomData()

' Set up chart areas. For more info see sample: ChartAreaRelationships.aspx --------------
Dim y1 As Axis = New Axis()
Dim y2 As Axis = New Axis()
mySC(0).YAxis = y1
mySC(1).YAxis = y1
mySC(2).YAxis = y2
mySC(3).YAxis = y2

Dim ca2 As ChartArea = New ChartArea()
Dim ca3 As ChartArea = New ChartArea()
Dim ca4 As ChartArea = New ChartArea()

Chart.ChartArea.SeriesCollection.Add(mySC(0))
ca2.SeriesCollection.Add(mySC(1))
ca3.SeriesCollection.Add(mySC(2))
ca4.SeriesCollection.Add(mySC(3))

Chart.ExtraChartAreas.Add(ca2)
Chart.ExtraChartAreas.Add(ca3)
Chart.ExtraChartAreas.Add(ca4)
Chart.ChartAreaLayout.Mode = ChartAreaLayoutMode.HorizontalPriority

' --------------

' Now we'll instantiate legend boxes for 2 of our areas. The main chart area already has a legend box.
ca2.LegendBox = New LegendBox()
ca3.LegendBox = New LegendBox()

' Orient the legend boxes in different positions.
ca3.LegendBox.Orientation = dotnetCHARTING.Orientation.Left
ca2.LegendBox.Orientation = dotnetCHARTING.Orientation.Right
Chart.ChartArea.LegendBox.Orientation = dotnetCHARTING.Orientation.Top

' Another option besides instantiating a legend box for a chart area is to instruct the tite box to act as the legend box.
ca4.TitleBox.Position = TitleBoxPosition.FullWithLegend

' This is all that is required, however, to control properties of this legend a box we'll need to instantiate a legend box
' and set them there. We will do so now.
ca4.LegendBox = New LegendBox()
ca4.LegendBox.LabelStyle.Font = New Font("Verdana",8)
' The same can be achieved by setting a font for the default entry
ca4.LegendBox.DefaultEntry.LabelStyle.Font = New Font("Verdana",8)

End Sub

Function getRandomData() As SeriesCollection
Dim SC As SeriesCollection = New SeriesCollection()
Dim myR As Random = New Random()
For a As Integer = 1 To 4
Dim s As Series = New Series()
s.Name = "Series " & a
For b As Integer = 1 To 4
Dim e As Element = New Element()
e.Name = "Element " & b
'e.YValue = -25 + myR.Next(50);
e.YValue = myR.Next(50)
s.Elements.Add(e)
Next b
SC.Add(s)
Next a

Return SC
End Function
</script>
</head>
<body>
<div style="text-align:center">
<dotnet:Chart id="Chart" runat="server" Width="568px" Height="344px">
</dotnet:Chart>
</div>
</body>
</html>

Sample FilenameLegendBoxMultiple.aspx
VersionLegacy (Pre 3.0)
Uses DatabaseNo

JS Charting

Gallery

Legend Box Multiple