首先就是其图表控件集合中新增了两种类型，分别为：Area,Bubble(区域图和冒泡图)。下面就是其演示效果：

　　首先，我们要创建一个SL应用，并在项目中加载对下面DLL文件的引用(来自下载的源码包)：

　　System.Windows.Controls.DataVisualization.Toolkit.dll

　　然后在相应的XAML文件中添加对控件的声明，如下：

 <UserControl x:Class="Silverlight_ToolKit3.DataVisualization"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    <!--引用声明-->
    xmlns:controlsToolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Toolkit"
    xmlns:chartingToolkit="clr-namespace:System.Windows.Controls.DataVisualization.Charting;assembly=System.Windows.Controls.DataVisualization.Toolkit"
    Width="800" Height="300">
    <Grid x:Name="LayoutRoot" Background="White">    
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="400"/>
           <ColumnDefinition Width="400"/>
        </Grid.ColumnDefinitions>
        <!--控件定义-->
        <chartingToolkit:Chart x:Name="AreaEmployeeList" Grid.Row="0" Grid.Column="0" Title="区域图" />
        <chartingToolkit:Chart x:Name="BubbleEmployeeList" Grid.Row="0" Grid.Column="1" Title="气泡图" /> 
    </Grid>
</UserControl>

　 因为要显示数据，所以我直接将数据对象集合“硬编码”到CS文件中，如下：

　　public List GetEmployeeList()
　　{
　　List employeeList = new List();
　　employeeList.Add(new EmployeeInfo { EmployeeID = 1, EmployeeName = "大林", Salary = 1000, City = "合肥" });
　　employeeList.Add(new EmployeeInfo { EmployeeID = 2, EmployeeName = "小林", Salary = 1000, City = "合肥" });
　　employeeList.Add(new EmployeeInfo { EmployeeID = 3, EmployeeName = "张三", Salary = 1000, City = "合肥" });
　　employeeList.Add(new EmployeeInfo { EmployeeID = 4, EmployeeName = "李四", Salary = 1500, City = "天津" });
　　employeeList.Add(new EmployeeInfo { EmployeeID = 5, EmployeeName = "王五", Salary = 2000, City = "上海" });
　　return employeeList;
　　}
　　public List GetOtherEmployeeList()
　　{
　　List employeeList = new List();
　　employeeList.Add(new EmployeeInfo { EmployeeID = 6, EmployeeName = "赵六", Salary = 800, City = "北京" });
　　employeeList.Add(new EmployeeInfo { EmployeeID = 7, EmployeeName = "尤七", Salary = 2100, City = "武汉" });
　　employeeList.Add(new EmployeeInfo { EmployeeID = 8, EmployeeName = "马八", Salary = 1209, City = "海口" });
　　employeeList.Add(new EmployeeInfo { EmployeeID = 9, EmployeeName = "许九", Salary = 1600, City = "海口" });
　　employeeList.Add(new EmployeeInfo { EmployeeID = 10, EmployeeName = "代十", Salary = 2300, City = "海口" });
　　return employeeList;
　　}
　　public class EmployeeInfo
　　{
　　public int EmployeeID { set; get; }
　　public string EmployeeName { set; get; }
　　public int Salary { set; get; }
　　public int[] Cost { get; set; }
　　public string City { set; get; }
　　}

　　因为这两个控件都支持多数据源绑定，所以我用了两个方法分别获取对象集合，分别是:

　   GetEmployeeList();
　　GetOtherEmployeeList();

　　接着，就要对相应的图表控件进行初始化和数据绑定操作了，首先是“区域图表控件”，其代码如下：

　　#region 区域图
　　AreaSeries areaSeries1 = new AreaSeries();
　　areaSeries1.ItemsSource = GetEmployeeList();
　　areaSeries1.IndependentValueBinding = new System.Windows.Data.Binding("EmployeeID");
　　areaSeries1.DependentValueBinding = new System.Windows.Data.Binding("Salary");
　　AreaEmployeeList.Series.Add(areaSeries1);
　　AreaSeries areaSeries2 = new AreaSeries();
　　areaSeries2.ItemsSource = GetOtherEmployeeList();
　　areaSeries2.IndependentValueBinding = new System.Windows.Data.Binding("EmployeeID");
　　areaSeries2.DependentValueBinding = new System.Windows.Data.Binding("Salary");
　　areaSeries2.Foreground = new SolidColorBrush(Colors.Red);
　　AreaEmployeeList.Series.Add(areaSeries2);
　　#endregion

　　上面代码依次声明了两个AreaSeries实例用于绑定两个数据源， 同时对第二个AreaSeries实例指定了红色背景来加以区别。当然对于AreaSeries的声明也可以放在XAML中进行定义，形如：
　　
<chartingToolkit:Chart Title="Typical Use">
     <chartingToolkit:Chart.Series>
         <chartingToolkit:AreaSeries
             Title="Particulate Levels"
             IndependentValueBinding="{Binding EmployeeID}"
             DependentValueBinding="{Binding Salary}"/>
     </chartingToolkit:Chart.Series>
 </chartingToolkit:Chart>

　　　注：我这样写只是想演示如何使用代码方式来初始化控件和绑定数据。

　　上面是关于Area图，下面再看一下Bubble图的初始化方法，其实因为ToolKit中的图表设计使用了统一的接口，因此不同的图表在具体实现时有些相似，下面的代码与上面的Area代码相差无几：

     #region 气泡图
　　BubbleSeries bubbleSeries1 = new BubbleSeries();
　　bubbleSeries1.ItemsSource = GetEmployeeList();
　　bubbleSeries1.IndependentValueBinding = new System.Windows.Data.Binding("EmployeeID");
　　bubbleSeries1.DependentValueBinding = new System.Windows.Data.Binding("Salary");
　　bubbleSeries1.AnimationSequence = AnimationSequence.LastToFirst;
　　BubbleEmployeeList.Series.Add(bubbleSeries1);
　　BubbleSeries bubbleSeries2 = new BubbleSeries();
　　bubbleSeries2.ItemsSource = GetOtherEmployeeList();
　　bubbleSeries2.IndependentValueBinding = new System.Windows.Data.Binding("EmployeeID");
　　bubbleSeries2.DependentValueBinding = new System.Windows.Data.Binding("Salary");
　　BubbleEmployeeList.Series.Add(bubbleSeries2);
　　bubbleSeries1.AnimationSequence = AnimationSequence.FirstToLast;
　　#endregion

　　大家看到了吧，唯一的区别就在BubbleSeries上，而不是Area图表的AreaSeries。最后补充一下，因为当前版本与之前我写的文章使用的版本不同，导致如果想向图表的X,Y轴添加‘标题属性’所使用的类不同，在3.0里可用如下代码向X,Y轴绑定标题名称：

　　Action chartModifier = (chart) =>
　　{
　　DisplayAxis dateAxis = new CategoryAxis { Orientation = AxisOrientation.X, Title = "雇员ID", FontStyle = FontStyles.Italic, ShowGridLines = true, FontSize = 14f };
　　AreaEmployeeList.Axes.Add(dateAxis);
　　DisplayAxis valueAxis = new CategoryAxis { Orientation = AxisOrientation.Y, Title = "薪水", FontStyle = FontStyles.Normal, ShowGridLines = true};
　　AreaEmployeeList.Axes.Add(valueAxis);
　　};
　　chartModifier(AreaEmployeeList);

　　这样，其显示效果就会变成如下图所示(注：Y轴单位数值会从左侧变到右侧)：