WPF TreeView层次绑定

Question

我刚开始学习WPF。我需要绑定对象(分层结构)文件夹。

public class Folder
{
    public Folder()
    {
        this.Name = string.Empty;
        this.Modules = new ObservableCollection<Module>();
        this.Folders = new List<Folder>();
        this.HasChild = false;
    }

    public Folder(Folder parent)
    {
        this.Name = string.Empty;
        this.Modules = new ObservableCollection<Module>();
        this.Folders = new List<Folder>();
        this.HasChild = false;
        this.Parent = parent;
    }

    public bool HasChild { get; set; }

    public string Name { get; set; }

    public List<Folder> Folders { get; set; }

    public ObservableCollection<Module> Modules { get; set; }

    public Folder Parent { get; set; }

    public Folder IfItemExists(string name)
    {
        foreach (Folder folder in Folders)
        {
            if (folder.Name == name)
            {
                return folder;
            }
        }

        return null;
    }
}

将其添加到TreeView中。我正在这样做。

   <TreeView Name="treeView" Margin="5">
        <TreeView.ItemTemplate>
            <HierarchicalDataTemplate ItemsSource="{Binding Path=Folders}" DataType="{x:Type ModulesUpToDateChecker:Folder}">
                <HierarchicalDataTemplate.ItemTemplate>
                    <DataTemplate>
                        <TextBlock Text="{Binding Path=Name}"></TextBlock>
                    </DataTemplate>
                </HierarchicalDataTemplate.ItemTemplate>
            </HierarchicalDataTemplate>
        </TreeView.ItemTemplate>
    </TreeView>

我只看到一个空的文档面板。该对象已写入内容。每个子元素都有自己的子元素，其类型相同。

- Baranovskiy Dmitry

Answer 1

一个HierarchicalDataTemplate已经是一个DataTemplate（它从中派生出来）。因此，只需跳过在您的HierarchicalDataTemplate中的ItemTemplate和DataTemplate部分，如下所示：

<TreeView Name="treeView" Margin="5">
  <TreeView.Resources>
    <HierarchicalDataTemplate ItemsSource="{Binding Path=Folders}" DataType="{x:Type WpfApplication220:Folder}">
      <TextBlock Text="{Binding Path=Name}"></TextBlock>
    </HierarchicalDataTemplate>
  </TreeView.Resources>
</TreeView>

噢，你需要在程序中或者标记中设置你的树形视图的ItemsSource。

treeView.ItemsSource = ..yourFolderList..

- SvenG

Answer 2

试着做这个：

 <TreeView Name="treeView" Margin="5">
    <TreeView.ItemTemplate>
        <HierarchicalDataTemplate ItemsSource="{Binding Path=Folders}" DataType="x:Type ModulesUpToDateChecker:Folder}">
           <Grid>
             <TextBlock Text="{Binding Path=Name}"></TextBlock>
           </Grid>
        </HierarchicalDataTemplate>
    </TreeView.ItemTemplate>
</TreeView>

- Raúl Otaño