Windows Phone 7 图表控件的使用
这一讲介绍在Windows Phone 7平台下如何使用Chart,我将展示在我们的应用程序中添加Pie,Bar和其它Chart。
获取Silverlight Toolkit
首先你需要下载控件包,到Silverlight Toolkit on Codeplex,并且安装。本篇特别介绍PieSeries、BarSeries。
PieSeries控件的使用
1.添加程序集引用
在的Silverlight安装路径下可以找到System.Windows.Controls 、the System.Windows.Controls.DataVisualization.Toolkit这两个程序集(我的路径是C:\Program Files\Microsoft SDKs\Silverlight\v4.0\Toolkit\Apr10\Bin)
将这两个程序集引用。
2.添加命名空间
在使用控件的XAML页面加入命名空间。
xmlns:chart="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit"
3.添加控件
在XAML页面中添加图下代码
<chart:Chart> <chart:PieSeries /> </chart:Chart>
这只是简单的添加了控件,你还没有做任何事呢。
4. PieSeriesControl.xaml.cs
using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; using Microsoft.Phone.Controls; using System.Windows.Controls.DataVisualization.Charting; namespace Day31_ChartingControls { public partial class PieSeriesControl : PhoneApplicationPage { VideoGameCharacter[] pacman = new VideoGameCharacter[2] { new VideoGameCharacter("Resembles", 8), new VideoGameCharacter("Doesn't resemble", 2)}; public PieSeriesControl() { InitializeComponent(); PieSeries pieSeries = PieChart.Series[0] as PieSeries; pieSeries.ItemsSource = pacman; } } public class VideoGameCharacter { public string Label { get; set; } public int Value { get; set; } public VideoGameCharacter(string label, int value) { Label = label; Value = value; } } }
你会发现,我并不是直接使用PieSeries 控件,而是使用的它的父控件,Series在Series集合的第一个索引
PieSeriespieSeries = PieChart.Series[0] asPieSeries;
我也不是完全清楚,为啥直接调用 PieSeries控件而不能使用。下面我将绑定数据到PieSeries。
<chart:Chart x:Name="PieChart">
<chart:PieSeries
IndependentValueBinding="{Binding Label}"
DependentValueBinding="{Binding Value}"/>
</chart:Chart>
效果如下图
BarSeries控件的使用
同样,我们可以使用BarSeries控件,创建控件,绑定数据都一样
<chart:Chart x:Name="BarChart" Foreground="Gray" Title="Midwest City Populations"> <chart:BarSeries Title="Population" IndependentValueBinding="{Binding Name}" DependentValueBinding="{Binding Population}"/> <chart:Chart.Axes> <chart:CategoryAxis Title="City" Orientation="Y" FontStyle="Italic"/> <chart:LinearAxis Title="Population" Orientation="X" Minimum="0" Maximum="2500000" Interval="500000" ShowGridLines="True" FontStyle="Italic"/> </chart:Chart.Axes> </chart:Chart>
using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; using Microsoft.Phone.Controls; using System.Windows.Controls.DataVisualization.Charting; namespace Day31_ChartingControls { public partial class BarSeriesControl : PhoneApplicationPage { List<City> cities = new List<City> { new City { Name = "CLE", Population = 2250871 }, new City { Name = "CMH", Population = 1773120 }, new City { Name = "CVG", Population = 2155137 }, new City { Name = "DET", Population = 4425110 } }; public BarSeriesControl() { InitializeComponent(); BarSeries bs = BarChart.Series[0] as BarSeries; bs.ItemsSource = cities; } } }