📄 elementtemplate.aspx
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<%@ Page Language="VB" Debug="true" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<script runat="server">
Function getRandomData() As SeriesCollection
Dim SC As New SeriesCollection()
Dim myR As New Random()
Dim a As Integer
For a = 1 To 4
Dim s As New Series()
s.Name = "Series " + CStr(a)
Dim b As Integer
For b = 1 To 4
Dim e As New Element()
e.Name = "Element " + CStr(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
Sub Page_Load(sender As [Object], e As EventArgs)
Chart.Type = ChartType.Combo
Chart.TempDirectory = "temp"
Chart.Debug = True
'//////////////////// Using templates //////////////////////
' In this sample we will demonstrate how templates can be used.
' Lets start with the x axis tick labels. The ticks are groups of elements with the same name.
' For this group we will show what percenrage of the total data this group represents with the
' %YPercentOfTotal token. We will also show the average value of the group.
Chart.XAxis.TickLabel.Text = "%Name (%YPercentOfTotal) Avg:%YAverage"
' Because the y axis is a value axis templates can't be used on it.
' The element labels can also be modified with these templates. Lets show the value, what percent the
' group the element makes up and what percent of the total the element is.
' First in order to show the values we have to set the ShowValue property.
Chart.DefaultSeries.DefaultElement.ShowValue = True
Chart.DefaultSeries.DefaultElement.LabelTemplate = "%YValue (G: %YPercentOfGroup) (T: %YPercentOfTotal)"
' OR ( These properties are the same )
Chart.DefaultSeries.DefaultElement.SmartLabel.Text = "%YValue (G: %YPercentOfGroup) (T: %YPercentOfTotal)"
' Even more info can be shown by using templates in tool tips. These are supported for elements and legend entries.
' We'll add a tool tip to the elements here.
Chart.DefaultSeries.DefaultElement.ToolTip = "%name is " + ControlChars.Cr + "%YPercentOfSeries of %SeriesName"
'//////////////////// Embeding format string into templates //////////////////////
' We can embed format string into our chart by using this syntax: <(token),(FormatString)>
' To demonstrate we will overwrite the 1st elements template to show the value as currency.
' To begin we will get our data
Dim sc As SeriesCollection = getRandomData()
' The template will look like this:
sc(0).Elements(0).LabelTemplate = "<%YValue,Currency>"
' Just another example for the second series
sc(1).Elements(0).LabelTemplate = "<%YValue,{0:#0.000}>"
'//////////////////// Creating clickable charts using templates //////////////////////
' We dont have any where to redirect so lets pretend site.aspx is a website that will understand
' the info we're going to send
Chart.DefaultSeries.DefaultElement.URL = "clicked.aspx?series=%SeriesName&element=%Name"
' Note: You may also use Element/LegendEntry.URLTarget = "_blank" for example to specify the link target.
' Add the random data.
Chart.SeriesCollection.Add(sc)
End Sub 'Page_Load
</script>
<HTML><HEAD><TITLE>Elements Template</TITLE></HEAD>
<BODY>
<DIV align=center>
<dotnet:Chart id="Chart" runat="server"/>
</DIV>
</BODY>
</BODY>
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