JS Label Callbacks
Demonstrates using JS callback functions to process label text before it is uesd on the chart.
<%@ Page Language="C#" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dnc" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING" %>
<%@ Import Namespace="System.Drawing" %>
<script runat="server">
void Page_Load(Object sender, EventArgs e)
{
// Demonstrates using JS callback functions to process label text before it is uesd on the chart..
Chart.TempDirectory = "temp";
Chart.Debug = false;
Chart.DefaultSeries.Type = SeriesType.Line;
Chart.Size = "640x350";
Chart.Title = "Label Callbacks";
Chart.LegendBox.Orientation = dotnetCHARTING.Orientation.Bottom;
Chart.JS.Enabled = true;
Chart.YAxis.Label.Text = "Cost (Thousands)";
Chart.YAxis.FormatString = "c0";
Chart.XAxis.Label.Text = "Months";
Chart.DefaultElement.ShowValue = true;
Chart.DefaultElement.SmartLabel.Font = new Font("Arial", 9,FontStyle.Bold);
Chart.DefaultElement.SmartLabel.Text = "js: function(point){ return '(y:'+JSC.formatString(point.y,'c0')+')'}";
Chart.XAxis.DefaultTick.Label.Text = "js: function(v){var monthShortNames=['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']; return 'Month: '+ monthShortNames[v]+''; }";
Chart.YAxis.DefaultTick.Label.Text = "js: function(v){ return ''+ JSC.formatString(v/1000,'c0')+'K'; }";
// *DYNAMIC DATA NOTE*
// This sample uses random data to populate the chart. To populate
// a chart with database data see the following resources:
// - Use the getLiveData() method using the dataEngine to query a database.
// - Help File > Getting Started > Data Tutorials
// - DataEngine Class in the help file
// - Sample: features/DataEngine.aspx
SeriesCollection mySC = getRandomData();
// Add the random data.
Chart.SeriesCollection.Add(mySC);
}
SeriesCollection getRandomData()
{
string[] sNames = new string[] { "Development", "Design", "Testing", "Documentation"};
string[] eNames = new string[] { "Jan", "Feb", "Mar", "Apr" };
Random myR = new Random(8);
SeriesCollection SC = new SeriesCollection();
int a = 0;
int b = 0;
for (a = 1; a < 3; a++)
{
Series s = new Series(sNames[a-1]);
for (b = 1; b < 5; b++)
{
Element e = new Element(eNames[b-1]);
e.YValue = 500000+myR.Next(500000);
s.Elements.Add(e);
}
SC.Add(s);
}
return SC;
}
SeriesCollection getLiveData()
{
DataEngine de = new DataEngine("ConnectionString goes here");
de.ChartObject = Chart; // Necessary to view any errors the dataEngine may throw.
de.SqlStatement = "SELECT XAxisColumn, YAxisColumn FROM ....";
return de.GetSeries();
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>.netCHARTING Sample</title>
</head>
<body>
<div align="center">
<dnc:Chart ID="Chart" runat="server" />
</div>
</body>
</html>
<%@ Page Language="vb" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dnc" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING" %>
<%@ Import Namespace="System.Drawing" %>
<script runat="server">
Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
' Demonstrates using JS callback functions to process label text before it is uesd on the chart..
Chart.TempDirectory = "temp"
Chart.Debug = False
Chart.DefaultSeries.Type = SeriesType.Line
Chart.Size = "640x350"
Chart.Title = "Label Callbacks"
Chart.LegendBox.Orientation = dotnetCHARTING.Orientation.Bottom
Chart.JS.Enabled = True
Chart.YAxis.Label.Text = "Cost (Thousands)"
Chart.YAxis.FormatString = "c0"
Chart.XAxis.Label.Text = "Months"
Chart.DefaultElement.ShowValue = True
Chart.DefaultElement.SmartLabel.Font = New Font("Arial", 9,FontStyle.Bold)
Chart.DefaultElement.SmartLabel.Text = "js: function(point){ return '(y:'+JSC.formatString(point.y,'c0')+')'}"
Chart.XAxis.DefaultTick.Label.Text = "js: function(v){var monthShortNames=['Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec']; return 'Month: '+ monthShortNames[v]+''; }"
Chart.YAxis.DefaultTick.Label.Text = "js: function(v){ return ''+ JSC.formatString(v/1000,'c0')+'K'; }"
' *DYNAMIC DATA NOTE*
' This sample uses random data to populate the chart. To populate
' a chart with database data see the following resources:
' - Use the getLiveData() method using the dataEngine to query a database.
' - Help File > Getting Started > Data Tutorials
' - DataEngine Class in the help file
' - Sample: features/DataEngine.aspx
Dim mySC As SeriesCollection = getRandomData()
' Add the random data.
Chart.SeriesCollection.Add(mySC)
End Sub
Function getRandomData() As SeriesCollection
Dim sNames As String() = New String() { "Development", "Design", "Testing", "Documentation"}
Dim eNames As String() = New String() { "Jan", "Feb", "Mar", "Apr" }
Dim myR As Random = New Random(8)
Dim SC As SeriesCollection = New SeriesCollection()
Dim a As Integer = 0
Dim b As Integer = 0
For a = 1 To 2
Dim s As Series = New Series(sNames(a-1))
For b = 1 To 4
Dim e As Element = New Element(eNames(b-1))
e.YValue = 500000+myR.Next(500000)
s.Elements.Add(e)
Next b
SC.Add(s)
Next a
Return SC
End Function
Function getLiveData() As SeriesCollection
Dim de As DataEngine = New DataEngine("ConnectionString goes here")
de.ChartObject = Chart ' Necessary to view any errors the dataEngine may throw.
de.SqlStatement = "SELECT XAxisColumn, YAxisColumn FROM ...."
Return de.GetSeries()
End Function
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>.netCHARTING Sample</title>
</head>
<body>
<div align="center">
<dnc:Chart ID="Chart" runat="server" />
</div>
</body>
</html>
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