📄 headerannotation.aspx

📁 掌握学习.net开发的非常好的资料
💻 ASPX
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<%@ Page Language="C#"  debug="true" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet"  Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<HTML>
	<HEAD>
		<TITLE>Header Annotation</TITLE>
		<script runat="server">


void Page_Load(Object sender,EventArgs e)
{

	Chart.Type = ChartType.Combo;//Horizontal;
	Chart.Width = 600;
	Chart.Height = 350;
	Chart.TempDirectory = "temp";
	Chart.Debug = true;
	
	
	// This sample will demonstrate how to use annotations to create a custom company header on your charts.
	
	// 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.
	SeriesCollection mySC = getRandomData();
	
	
	// Our company logo is 40 pixels high so we'll start by making some space at the top of the chart.
	Chart.MarginTop = 40;
	
	// Next we place the logo on the chart using an annotation.
	Annotation a = new Annotation(new Background("dncLogo.jpg"));
	a.Position = new Point(27,0);
	Chart.Annotations.Add(a);
	
	
	// Now we'll make an annotation for the text part.
	Annotation a2 = new Annotation("Copyright 2004 .netCHARTING. Click for details.");
	
	// We'll add a link so then this text is clicked it takes us to the site.
	a2.URL = "http://www.dotnetcharting.com";
	
	// The logo size is 103x40. We'll place the text on the right side and center the text vertically with the logo
	// my moving it down 15 pixels.
	a2.Position = new Point(130,15);
	
	// Make sure the annotation doesn't create a rectangle for the text and wrap it.
	a2.DynamicSize = false;
	
	// In order for the annotation not to draw the background, outline and so on... We'll use a shortcut to clear the colors.
	a2.ClearColors();
	
	// Add the second annotation.
	Chart.Annotations.Add(a2);
	

	// Add some random data.
	Chart.SeriesCollection.Add(mySC);
    
    
}


SeriesCollection getRandomData()
{
	SeriesCollection SC = new SeriesCollection();
	Random myR = new Random();
	for(int a = 1; a < 5; a++)
	{
		Series s = new Series();
		s.Name = "Series " + a;
		for(int b = 1; b < 5; b++)
		{
			Element e = new Element();
			e.Name = "Element " + b;
			//e.YValue = -25 + myR.Next(50);
			e.YValue = myR.Next(50);
			s.Elements.Add(e);
		}
		SC.Add(s);
	}

	// 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;
}
		</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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