C# TreeView仅加载顶部节点

我尝试使用一个节点类在Silverlight中填充树视图：

class TreeNode {
    public string Caption {get; set;};
    public IEnumerable<TreeNode> Children{get; set;}

}

类树节点{
公共字符串标题{get；set；}；
公共IEnumerable子项{get；set；}
}

我的XAML如下所示：

<controls:TreeView VerticalAlignment="Stretch" 
                          x:Name="trv"
                          Height="150" >
            <controls:TreeView.ItemTemplate>
                <common:HierarchicalDataTemplate ItemsSource="{Binding Path=Children}" >
                    <TextBlock Text="{Binding Path=Caption}" />
                </common:HierarchicalDataTemplate>
            </controls:TreeView.ItemTemplate>
        </controls:TreeView>

但是，仅加载第一层元素。如果我用HerarchicalDataTemplate替换TextBlock，基本上是硬编码数据深度，则会显示第二层元素。然而，第三层不是

---

有什么想法吗？

我刚刚试过，你一定是在数据绑定部分做错了什么，因为一切都正常工作。我用下面的XAML创建了一个简单的示例

输出：

<controls:TreeView VerticalAlignment="Stretch"  
                  x:Name="trv"
                  Height="150" >
    <controls:TreeView.ItemTemplate>
        <controls:HierarchicalDataTemplate ItemsSource="{Binding Path=Children}" >
            <TextBlock Text="{Binding Path=Caption}" />
        </controls:HierarchicalDataTemplate>
    </controls:TreeView.ItemTemplate>
</controls:TreeView>

    TreeNode myNode = new TreeNode() { Caption = "Parent" };
    List<TreeNode> myChildren = new List<TreeNode>();

    myChildren.Add(new TreeNode() { Caption = "First Child" });
    myChildren.Add(new TreeNode() { Caption = "Second Child", Children = new List<TreeNode>() { new TreeNode() { Caption = "Child on 3rd Level" } } });


    myNode.Children = myChildren;
    trv.ItemsSource = new List<TreeNode>() { myNode };

XAML:

<controls:TreeView VerticalAlignment="Stretch"  
                  x:Name="trv"
                  Height="150" >
    <controls:TreeView.ItemTemplate>
        <controls:HierarchicalDataTemplate ItemsSource="{Binding Path=Children}" >
            <TextBlock Text="{Binding Path=Caption}" />
        </controls:HierarchicalDataTemplate>
    </controls:TreeView.ItemTemplate>
</controls:TreeView>

    TreeNode myNode = new TreeNode() { Caption = "Parent" };
    List<TreeNode> myChildren = new List<TreeNode>();

    myChildren.Add(new TreeNode() { Caption = "First Child" });
    myChildren.Add(new TreeNode() { Caption = "Second Child", Children = new List<TreeNode>() { new TreeNode() { Caption = "Child on 3rd Level" } } });


    myNode.Children = myChildren;
    trv.ItemsSource = new List<TreeNode>() { myNode };

代码：

<controls:TreeView VerticalAlignment="Stretch"  
                  x:Name="trv"
                  Height="150" >
    <controls:TreeView.ItemTemplate>
        <controls:HierarchicalDataTemplate ItemsSource="{Binding Path=Children}" >
            <TextBlock Text="{Binding Path=Caption}" />
        </controls:HierarchicalDataTemplate>
    </controls:TreeView.ItemTemplate>
</controls:TreeView>

    TreeNode myNode = new TreeNode() { Caption = "Parent" };
    List<TreeNode> myChildren = new List<TreeNode>();

    myChildren.Add(new TreeNode() { Caption = "First Child" });
    myChildren.Add(new TreeNode() { Caption = "Second Child", Children = new List<TreeNode>() { new TreeNode() { Caption = "Child on 3rd Level" } } });


    myNode.Children = myChildren;
    trv.ItemsSource = new List<TreeNode>() { myNode };

treenodemynode=newtreenode（）{Caption=“Parent”}；
List myChildren=新列表（）；
添加（new TreeNode（）{Caption=“First Child”}）；
添加（new TreeNode（）{Caption=“Second Child”，Children=new List（）{new TreeNode（）{Caption=“Child on 3rd Level”}}）；
myNode.Children=myChildren；
trv.ItemsSource=新列表（）{myNode}；

我懒得加载叶节点，这有点把事情搞砸了。切换到一次加载所有节点，一切正常。