好的,这就是HierarchicalDataTemplate会拯救你的。诀窍是您将需要使用两个不同的层次结构模板,因为这里有一个三级层次结构。我构建了一个简单的UserControl
为了显示。首先,这里是一些创建模型数据的隐藏代码,类似于您所拥有的:
public partial class ThreeLevelTreeView : UserControl
{
public ArrayList DeviceGroups { get; private set; }
public ThreeLevelTreeView()
{
DeviceInstance inst1 = new DeviceInstance() { Name = "Instance1" };
DeviceInstance inst2 = new DeviceInstance() { Name = "Instance2" };
DeviceInstance inst3 = new DeviceInstance() { Name = "Instance3" };
DeviceInstance inst4 = new DeviceInstance() { Name = "Instance4" };
DeviceType type1 = new DeviceType() { Name = "Type1", DeviceInstances = new ArrayList() { inst1, inst2 } };
DeviceType type2 = new DeviceType() { Name = "Type2", DeviceInstances = new ArrayList() { inst3 } };
DeviceType type3 = new DeviceType() { Name = "Type3", DeviceInstances = new ArrayList() { inst4 } };
DeviceType type4 = new DeviceType() { Name = "Type4" };
DeviceGroup group1 = new DeviceGroup() { Name = "Group1", DeviceTypes = new ArrayList() { type1, type2 } };
DeviceGroup group2 = new DeviceGroup() { Name = "Group2", DeviceTypes = new ArrayList() { type3, type4 } };
DeviceGroups = new ArrayList() { group1, group2 };
InitializeComponent();
}
}
public class DeviceGroup
{
public string Name { get; set; }
public ArrayList DeviceTypes { get; set; }
}
public class DeviceType
{
public string Name { get; set; }
public ArrayList DeviceInstances { get; set; }
}
public class DeviceInstance
{
public string Name { get; set; }
}
这里没什么困难,但请注意你应该使用ObservableCollection
代替ArrayList
如果您想动态添加和删除集合。现在让我们看看该控件的 XAML:
<UserControl x:Class="TestWpfApplication.ThreeLevelTreeView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:TestWpfApplication"
DataContext="{Binding RelativeSource={RelativeSource Self}}">
<TreeView ItemsSource="{Binding DeviceGroups}">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding DeviceTypes}">
<HierarchicalDataTemplate.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding DeviceInstances}">
<TextBlock Text="{Binding Name}"/>
</HierarchicalDataTemplate>
</HierarchicalDataTemplate.ItemTemplate>
<TextBlock Text="{Binding Name}"/>
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
这是结果:
替代文本http://img684.imageshack.us/img684/6281/ Threeleveltreeview.png