📄 emptyelements1.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>Empty Element 1</TITLE>
<script runat="server">
Sub Page_Load(sender As [Object], e As EventArgs)
Chart.Type = ChartType.ComboSideBySide 'Horizontal;
Chart.Width = Unit.Parse(600)
Chart.Height = Unit.Parse(200)
Chart.TempDirectory = "temp"
Chart.Use3D = True
Chart.Debug = True
Chart.LegendBox.Position = LegendBoxPosition.None
' This sample will demonstrate advanced empty element handling. (Modes)
' Changing the default series type will show how different types behave with empty elements.
Chart.DefaultSeries.Type = SeriesType.AreaLine
' First we get our data, if you would like to get the data from a database you need to use
' the data engine. See sample: features/dataEngine.aspx. Or the dataEngine tutorial in the help file.
Dim mySC As SeriesCollection = getData()
' EmptyElementMode.None
mySC(3).EmptyElement.Mode = EmptyElementMode.None
mySC(3).Name = "Mode: None"
' EmptyElementMode.Ignore;
mySC(0).EmptyElement.Mode = EmptyElementMode.Ignore
mySC(0).Name = "Mode: Ignore"
' EmptyElementMode.Fill;
mySC(1).EmptyElement.Mode = EmptyElementMode.Fill
mySC(1).Name = "Mode: Fill"
' EmptyElementMode.TreatAsZero;
mySC(2).EmptyElement.Mode = EmptyElementMode.TreatAsZero
mySC(2).Name = "Mode: TreatAsZero"
' Add the random data.
Chart.SeriesCollection.Add(mySC)
End Sub 'Page_Load
Function getData() As SeriesCollection
Dim sc As New SeriesCollection()
Dim s1 As New Series()
s1.Elements.Add(New Element("1", 8))
s1.Elements.Add(New Element("2", 8))
s1.Elements.Add(New Element("3", Double.NaN))
s1.Elements.Add(New Element("4", Double.NaN))
s1.Elements.Add(New Element("5", 5))
s1.Elements.Add(New Element("6", 5))
Dim s2 As New Series()
s2.Elements.Add(New Element("1", 8))
s2.Elements.Add(New Element("2", 8))
s2.Elements.Add(New Element("3", Double.NaN))
s2.Elements.Add(New Element("4", Double.NaN))
s2.Elements.Add(New Element("5", 5))
s2.Elements.Add(New Element("6", 5))
Dim s3 As New Series()
s3.Elements.Add(New Element("1", 5))
s3.Elements.Add(New Element("2", 5))
s3.Elements.Add(New Element("3", Double.NaN))
s3.Elements.Add(New Element("4", Double.NaN))
s3.Elements.Add(New Element("5", 8))
s3.Elements.Add(New Element("6", 8))
Dim s4 As New Series()
s4.Elements.Add(New Element("1", 5))
s4.Elements.Add(New Element("2", 5))
s4.Elements.Add(New Element("3", Double.NaN))
s4.Elements.Add(New Element("4", Double.NaN))
s4.Elements.Add(New Element("5", 8))
s4.Elements.Add(New Element("6", 8))
sc.Add(s2)
sc.Add(s1)
sc.Add(s4)
sc.Add(s3)
Return sc
End Function 'getData
</script>
</HEAD>
<BODY>
<br>
<DIV align="center">
<dotnet:Chart id="Chart" runat="server" Width="568px" Height="344px">
</dotnet:Chart>
</DIV>
</BODY>
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