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Annotation Construction

Demonstrates a simple and quick way to create multiple annotations with similar styling.

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<%@ Page Language="C#" Description="dotnetCHARTING Component" %>

<%@ Register TagPrefix="dnc" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING" %>
<%@ Import Namespace="System.Drawing" %>
<%@ Import Namespace="System.Drawing.Drawing2D" %>
<%@ Import Namespace="dotnetCHARTING.Mapping" %>

<script runat="server">

void Page_Load(Object sender, EventArgs e)
{
// Demonstrates a simple and quick way to create multiple annotations with similar styling.

Chart.Size = "600x350";
//Chart.Title = ".netCHARTING Sample";
Chart.TempDirectory = "temp";
Chart.Debug = true;

// First create an annotation with parameters used for all others:

Annotation dA = new Annotation();

dA.Background.Color = Color.DarkOrange;
dA.Background.ShadingEffectMode = ShadingEffectMode.Background1;
dA.DefaultCorner = BoxCorner.Square;
dA.Label.Font = new Font("Arial", 10, FontStyle.Bold);
dA.Label.Color = Color.White;
dA.DynamicSize = false;
dA.Padding = 10;
dA.Size = new Size(150, 25);

// Now add annotation use the above styling using an annotation constructors that lets you pass a default annotation.

Annotation a1 = new Annotation("The first annotation", dA);
a1.Position = new Point(35, 50);

Annotation a2 = new Annotation("The second annotation", dA);
a2.Position = new Point(35, 80);

Annotation a3 = new Annotation("The third annotation", dA);
a3.Position = new Point(35, 110);

Annotation a4 = new Annotation("The fourth annotation", dA);
a4.Position = new Point(35, 140);

Chart.Annotations.Add(a1,a2,a3,a4);

// *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()
{
Random myR = new Random(1);
SeriesCollection SC = new SeriesCollection();
for (int a = 1; a < 5; a++)
{
Series s = new Series("Series " + a.ToString());
for (int b = 1; b < 5; b++)
{
Element e = new Element("Element " + b.ToString());
e.YValue = myR.Next(50);
s.Elements.Add(e);
}
SC.Add(s);
}
return SC;
}

SeriesCollection getLiveData()
{
DataEngine de = new DataEngine(ConfigurationManager.AppSettings["DNCConnectionString"]);
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" %>
<%@ Import Namespace="System.Drawing.Drawing2D" %>
<%@ Import Namespace="dotnetCHARTING.Mapping" %>

<script runat="server">

Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
' Demonstrates a simple and quick way to create multiple annotations with similar styling.

Chart.Size = "600x350"
'Chart.Title = ".netCHARTING Sample";
Chart.TempDirectory = "temp"
Chart.Debug = True

' First create an annotation with parameters used for all others:

Dim dA As Annotation = New Annotation()

dA.Background.Color = Color.DarkOrange
dA.Background.ShadingEffectMode = ShadingEffectMode.Background1
dA.DefaultCorner = BoxCorner.Square
dA.Label.Font = New Font("Arial", 10, FontStyle.Bold)
dA.Label.Color = Color.White
dA.DynamicSize = False
dA.Padding = 10
dA.Size = New Size(150, 25)

' Now add annotation use the above styling using an annotation constructors that lets you pass a default annotation.

Dim a1 As Annotation = New Annotation("The first annotation", dA)
a1.Position = New Point(35, 50)

Dim a2 As Annotation = New Annotation("The second annotation", dA)
a2.Position = New Point(35, 80)

Dim a3 As Annotation = New Annotation("The third annotation", dA)
a3.Position = New Point(35, 110)

Dim a4 As Annotation = New Annotation("The fourth annotation", dA)
a4.Position = New Point(35, 140)

Chart.Annotations.Add(a1,a2,a3,a4)

' *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 myR As Random = New Random(1)
Dim SC As SeriesCollection = New SeriesCollection()
For a As Integer = 1 To 4
Dim s As Series = New Series("Series " & a.ToString())
For b As Integer = 1 To 4
Dim e As Element = New Element("Element " & b.ToString())
e.YValue = myR.Next(50)
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(ConfigurationManager.AppSettings("DNCConnectionString"))
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>

Sample FilenameAnnotationConstruction.aspx
Version5.3
Uses DatabaseNo

JS Charting

Gallery

Annotation Construction