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我想實現拖放進行結合,以自定義元素TreeView控件相關的underyling元素:如何找到一個TreeViewItem
<TreeView ItemsSource="{Binding FirstGeneration}">
<TreeView.Resources>
<HierarchicalDataTemplate DataType="{x:Type NavigationTreeElement}"
ItemsSource="{Binding Children}">
<StackPanel Orientation="Horizontal" Margin="1">
<Image Source="open-16x16.png" />
<TextBlock Text="{Binding Path=DisplayName}" />
</StackPanel>
</HierarchicalDataTemplate>
</TreeView.Resources>
</TreeView>
與基礎類:
public class NavigationElement
{
public string DisplayName { get; set; }
public ObservableCollection<NavigationElement> Children { get; set; }
}
我在將呈現的TreeViewItem與底層的NavigationElement關聯時遇到問題。如果我發現一個TreeViewItem鼠標已經結束,因爲這樣的:
private static TreeViewItem GetNearestContainer(UIElement element)
{
// Walk up the element tree to the nearest tree view item.
var container = element as TreeViewItem;
while ((container == null) && (element != null))
{
element = VisualTreeHelper.GetParent(element) as UIElement;
container = element as TreeViewItem;
}
return container;
}
如何是樹型視圖與下面NavigationElement關聯?