ComboBox+TreeView

[一篮饭特稀原创，转载请注明出处http://www.cnblogs.com/wanghafan/archive/2012/05/10/2493799.html]

银光中ComboBox+TreeView构成自定义控件： 

思路1：textbox+button+treeview 缺点：不能跨ChildWindow、零散 [实现] 

思路2：ComboBox+TreeView+textbox 优点：可以跨ChildWindow [实现]+[推荐] 

思路3：ComboBox+TreeView 优点：可以跨ChildWindow、紧凑 [未实现] 

给出思路2的核心代码：

xaml:

<ComboBox Height="21" x:Name="cbTree">
    <ComboBoxItem>
     <ComboBoxItem.Content>
       <controls:TreeView x:Name="tvLeftOrgan" SelectedItemChanged="tvLeftOrgan_SelectedItemChanged"/>          
     </ComboBoxItem.Content>
    </ComboBoxItem>
   </ComboBox>
   <TextBox Height="21" x:Name="tbTree"/>    

 xaml.cs:

private void tvLeftOrgan_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
        {
            if (tvLeftOrgan.Items.Count > 0)
            {
                ComboBoxSelect tvs = new ComboBoxSelect();
                tvs.id = ((TreeViewItem)tvLeftOrgan.SelectedItem).DataContext.ToString();
                tvs.name = ((TreeViewItem)tvLeftOrgan.SelectedItem).Header.ToString();   
                tbTree.Text = tvs.name;
            }
        }

    public class ComboBoxSelect : ComboBoxItem
    {
        public string name=string.Empty;
        public string id = string.Empty;
    }

 思路3： 

与思路2大体相同，但是：

  public class info
    {
        public string name = "fdfs";
        public string id = "df";
        public info(string n, string i)
        {
            name = n;
            id = i;
                
        }
        public override string ToString()
        {
            return name;
        }
    }

        void cbTree_DropDownOpened(object sender, EventArgs e) //打开时，清空并加载treeview
        {
            cbTree.Items.Clear();
            cbTree.Items.Add(tv);
        }
        void cbTree_DropDownClosed(object sender, EventArgs e) //关闭时，清空并加载1个treeviewitem，这样可以防止选中整个treeview而不显示选中的内容
        {
            cbTree.Items.Clear();
            cbTree.Items.Add((tv.SelectedItem as TreeViewItem).Header);
            cbTree.SelectedIndex = 0;
        }