將屬性綁定到TreeView的SelectedItem可以解決您的問題。下面的代碼表達了我正在考慮的內容。對於您擁有的兩個UC,您可以爲SelectedItem公開一個屬性。
XAML:
<TreeView x:Name="Tree1">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Items}">
<TextBlock Text="{Binding Name}" />
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>
</TreeView>
<TextBlock Text="{Binding ElementName=Tree1,Path=SelectedItem.Name}" />
實體項目
public class Item
{
public event PropertyChangedEventHandler PropertyChanged;
private string name;
private Collection<Item> items;
public Collection<Item> Items { get { return items; } }
public Item()
{
items = new Collection<Item>();
}
public string Name
{
get { return name; }
set { name = value; OnPropertyChanged("Name"); }
}
protected void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(propertyName));
}
}
}
綁定源
Item item = new Item { Name = "A" };
item.Items.Add(new Item { Name = "A_1" });
item.Items.Add(new Item { Name = "A_2" });
item.Items.Add(new Item { Name = "A_3" });
Tree1.ItemsSource = new Collection<Item>() { item };
我與項目結合沒有問題。我的問題是關於處理Item.Selected事件並從頂級代碼中獲取所選的TreeViewItem數據上下文。 – 2011-04-25 14:56:30