📄 elementtemplate.aspx
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<%@ Page Language="C#" debug="true" Description="dotnetCHARTING Component" %>
<%@ Register TagPrefix="dotnet" Namespace="dotnetCHARTING" Assembly="dotnetCHARTING"%>
<%@ Import Namespace="System.Drawing" %>
<script runat="server">
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);
}
return SC;
}
void Page_Load(Object sender,EventArgs e)
{
Chart.Type = ChartType.Combo;
Chart.TempDirectory = "temp";
////////////////////// Using templates //////////////////////
// In this sample we will demonstrate how templates can be used.
// Lets start with the x axis tick labels. The ticks are groups of elements with the same name.
// For this group we will show what percenrage of the total data this group represents with the
// %YPercentOfTotal token. We will also show the average value of the group.
Chart.XAxis.TickLabel.Text = "%Name (%YPercentOfTotal) Avg:%YAverage";
// Because the y axis is a value axis templates can't be used on it.
// The element labels can also be modified with these templates. Lets show the value, what percent the
// group the element makes up and what percent of the total the element is.
// First in order to show the values we have to set the ShowValue property.
Chart.DefaultSeries.DefaultElement.ShowValue = true;
Chart.DefaultSeries.DefaultElement.LabelTemplate = "%YValue (G: %YPercentOfGroup) (T: %YPercentOfTotal)";
// OR ( These properties are the same )
Chart.DefaultSeries.DefaultElement.SmartLabel.Text = "%YValue (G: %YPercentOfGroup) (T: %YPercentOfTotal)";
// Even more info can be shown by using templates in tool tips. These are supported for elements and legend entries.
// We'll add a tool tip to the elements here.
Chart.DefaultSeries.DefaultElement.ToolTip = "%name is \r%YPercentOfSeries of %SeriesName";
////////////////////// Embeding format string into templates //////////////////////
// We can embed format string into our chart by using this syntax: <(token),(FormatString)>
// To demonstrate we will overwrite the 1st elements template to show the value as currency.
// To begin we will get our data
SeriesCollection sc = getRandomData();
// The template will look like this:
sc[0].Elements[0].LabelTemplate = "<%YValue,Currency>";
// Just another example for the second series
sc[1].Elements[0].LabelTemplate = "<%YValue,{0:#0.000}>";
////////////////////// Creating clickable charts using templates //////////////////////
// We dont have any where to redirect so lets pretend site.aspx is a website that will understand
// the info we're going to send
Chart.DefaultSeries.DefaultElement.URL = "clicked.aspx?series=%SeriesName&element=%Name";
// Note: You may also use Element/LegendEntry.URLTarget = "_blank" for example to specify the link target.
// Add the random data.
Chart.SeriesCollection.Add(sc);
}
</script>
<HTML><HEAD><TITLE>Elements Template</TITLE></HEAD>
<BODY>
<DIV align=center>
<dotnet:Chart id="Chart" runat="server"/>
</DIV>
</BODY>
</BODY>
</HTML>⌨️ 快捷键说明
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