小编use*_*801的帖子

我参考这篇文章:

WPF TreeView HierarchicalDataTemplate - 绑定到具有多个子集合的对象

并修改树结构,如:

Root
  |__Group
       |_Entry
           |_Source

在Entry.cs中:

public class Entry
{
    public int Key { get; set; }
    public string Name { get; set; }

    public ObservableCollection<Source> Sources { get; set; }

    public Entry()
    {
        Sources = new ObservableCollection<Source>();
    }

    public ObservableCollection<object> Items
    {
        get
        {
            ObservableCollection<object> childNodes = new ObservableCollection<object>();

            foreach (var source in this.Sources)
                childNodes.Add(source);

            return childNodes;
        }
    }
}

在Source.cs中:

public class Source
{
    public int Key { get; set; }
    public …