📄 legendboxelement.aspx
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<%@ Page Language="VB" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<HTML>
<HEAD>
<TITLE>.netCHARTING Sample</TITLE>
<script runat="server">
Sub Page_Load(sender As [Object], e As EventArgs)
Chart.Type = ChartType.Combo 'Horizontal;
Chart.Width = Unit.Parse(600)
Chart.Height = Unit.Parse(350)
Chart.TempDirectory = "temp"
Chart.Debug = True
' This sample will demonstrate how to use a legend box to refer to particular elements.
' *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()
' First we make the marker appear on the column and set larger size.
mySC(3).Elements(1).ForceMarker = True
mySC(3).Elements(1).Marker.Size = 10
' Initialize the new legend box and make it only show the marker and name.
Dim newLegend As New LegendBox()
newLegend.Template = "%Icon%Name"
' Initialize the new legend entry.
Dim newEntry As New LegendEntry()
newEntry.Name = "Important " + ControlChars.Lf + "Element"
' Setup the marker for the legend entry
newEntry.Marker.Type = ElementMarkerType.FivePointStar
newEntry.Marker.Size = 10
newEntry.SeriesType = SeriesType.Marker
' Ensure the same color is used for the marker as the element.
newEntry.Marker.Color = Chart.Palette(3)
' Add the entry to the legend and the legend to the chart.
newLegend.ExtraEntries.Add(newEntry)
Chart.ExtraLegendBoxes.Add(newLegend)
' Add the random data.
Chart.SeriesCollection.Add(mySC)
End Sub 'Page_Load
Function getRandomData() As SeriesCollection
Dim SC As New SeriesCollection()
Dim myR As New Random()
Dim a As Integer
For a = 0 To 3
Dim s As New Series()
s.Name = "Series " & a
Dim b As Integer
For b = 0 To 3
Dim e As 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 'getRandomData
</script>
</HEAD>
<BODY>
<DIV align="center">
<dotnet:Chart id="Chart" runat="server" Width="568px" Height="344px">
</dotnet:Chart>
</DIV>
</BODY>
</HTML>
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