Question

我需要在wpf中为树视图绑定递归子节点。但我真的不知道如何使它工作。这就是我找到的

ObservableCollection<Animal> animals = new ObservableCollection<Animal>();
animals.Add(new Animal("California Newt"));
animals.Add(new Animal("Tomato Frog"));
animals.Add(new Animal("Green Tree Frog"));
animals.Add(new Animal("Frog"));
AnimalCategories.Add(new AnimalCategory("Amphibians", animals));

animals = new ObservableCollection<Animal>();
animals.Add(new Animal("Golden Silk Spider"));
animals.Add(new Animal("Black Widow Spider"));
AnimalCategories.Add(new AnimalCategory("Spiders", animals))

需要在树视图上绑定的列表，这里是它的结构

AnimalCategory类：

Class AnimalCategory 
    Private _category As String
    Public Property Category As String
        Get
            Return _category
        End Get
        Set(ByVal value As String)
            _category = value
        End Set
    End Property
    Private _animals As ObservableCollection(Of Animal)
    Public ReadOnly Property Animals() As ObservableCollection(Of Animal)
        Get

            If _animals Is Nothing Then
                _animals = New ObservableCollection(Of Animal)()
            End If

            Return _animals
        End Get
    End Property

    Public Sub New()
    End Sub
    Public Sub New(category As String, animals As ObservableCollection(Of Animal))
        _category = category
        _animals = animals
    End Sub
End Class

动物类：

Class Animal
    Private _name As String
    Public Property Name As String
        Get
            Return _name
        End Get
        Set(ByVal value As String)
            _name = value
        End Set


    End Property
    Public Sub New()
    End Sub
    Public Sub New(name As String)
        _name = name
    End Sub
End Class

我的xaml代码是..！

<TreeView x:Name="radTreeView"   Background="#4E4E4E" x:FieldModifier="public"  ItemsSource="{x:Static local:cntlWPFMMTreeView.AnimalCategories}"
        ScrollViewer.HorizontalScrollBarVisibility="Visible" ScrollViewer.VerticalScrollBarVisibility="Visible">
<telerik:RadTreeView.ItemTemplate>
        <HierarchicalDataTemplate ItemsSource="{Binding Animals}">
            <TextBlock  Text="{Binding Category}" />
            <HierarchicalDataTemplate.ItemTemplate>
                <DataTemplate>
                    <TextBlock Text="{Binding Name}"/>
                </DataTemplate>
            </HierarchicalDataTemplate.ItemTemplate>
        </HierarchicalDataTemplate>
    </telerik:RadTreeView.ItemTemplate>
</TreeView>

使用上面的代码我可以绑定一个级别的父子hiereachy，如下所示，

Buit我需要像下面的动态

那样绑定多层次的层次结构

如何在WPF中执行此操作..？

Answer 1

您可以将一个控件的值与另一个控件的datacontext绑定为 -

Binding =“{Binding Path = DataContext.MyBindingProperty，ElementName = MyMainWindow}

根据您的要求修改此行。

希望它有所帮助！

Answer 2

两件事：您必须向动物类添加一个ObservableCollections of Animals。并且您必须使用ItemsSource =“{Binding Animals}”将HierarchicalDataTemplate的ItemTemplate更改为另一个HierarchicalDataTemplate。

在treeview wpf中绑定多级层次结构数据

2 个答案: