📄 annotationlink.aspx
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<%@ Page Language="VB" debug="true" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<HTML>
<HEAD>
<TITLE>Annotation Link</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.ShadingEffect = True
' This sample demonstrates how you can place links anywhere on the chart using annotations.
' First we'll instantiate our annotation.
Dim a As New Annotation()
' Because we just want a text link we'll get rid of the box. You can comment this line out to see what the box looks like.
a.ClearColors()
' Set the link text
a.Label.Text = ".netCHARTING Website"
' In order to make it look like a link we'll make it blue and underlined.
a.Label.Color = Color.Blue
a.Label.Font = New Font("Arial", 8, FontStyle.Underline)
' Set the url for our link.
a.URL = "http://www.dotnetcharting.com"
' We set a point where the annotation appears
a.Position = New Point(50, 30)
' By default, the annotation will create a rectangle for the text. In order to place the text on one line we'll
' set the dynamic size property to false.
a.DynamicSize = False
' Add the annotation to our chart.
Chart.Annotations.Add(a)
' Add the random data.
Chart.SeriesCollection.Add(getRandomData())
End Sub 'Page_Load
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 " + a.ToString()
Dim b As Integer
For b = 1 To 4
Dim e As New Element()
e.Name = "Element " + b.ToString()
'e.YValue = -25 + myR.Next(50);
e.YValue = myR.Next(50)
s.Elements.Add(e)
Next b
SC.Add(s)
Next a
' Set Different Colors for our Series
SC(0).DefaultElement.Color = Color.FromArgb(49, 255, 49)
SC(1).DefaultElement.Color = Color.FromArgb(255, 255, 0)
SC(2).DefaultElement.Color = Color.FromArgb(255, 99, 49)
SC(3).DefaultElement.Color = Color.FromArgb(0, 156, 255)
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>
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