📄 arbitraryticks.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
Chart.Width = Unit.Parse(600)
Chart.Height = Unit.Parse(350)
Chart.TempDirectory = "temp"
Chart.Debug = True
Chart.Title = "Adding axis ticks at arbitrary positions."
' * INTRO *
' This sample will demonstrate how how ticks can be added at any position on an axis scale.
' A numeric tick is added to the y axis and a DateTime value tick is added to the x axis.
' 1. CREATE AN AXIS TICK WITH VALUE OF 15
Dim at As New AxisTick(15)
at.Label.Color = Color.Red
' Add it to the axis.
Chart.YAxis.ExtraTicks.Add(at)
' Interval is set for demo purposes so the automatic ticks dont interfere with the custom tick.
Chart.YAxis.Interval = 10
' 2. CREATE AN AXIS TICK WITH VALUE OF Jan 17 2005
Dim at2 As New AxisTick(New DateTime(2005, 1, 17))
at2.Label.Color = Color.Red
Chart.XAxis.ExtraTicks.Add(at2)
' Set a format string to include the day part of the date.
Chart.XAxis.FormatString = "MMM d"
' 3. GET DATA
' *DYNAMIC DATA NOTE*
' This sample uses random data to populate the chart. For information on acquiring
' database data see the following resources:
' - Classic samples folder
' - Help File > Data Tutorials
' - Sample: features/DataEngine.aspx
' 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(1)
Dim dt As New DateTime(2005, 1, 1)
Dim a As Integer
For a = 0 To 0
Dim s As New Series()
s.Name = "Series " & a
Dim b As Integer
For b = 0 To 3
Dim e As New Element()
e.YValue = myR.Next(40)
e.XDateTime = dt
dt = dt.AddMonths(1)
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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