1.非MVVM模式:下载源代码WpfApplication1.zip
<TreeView Height="200" PreviewMouseRightButtonDown="TreeViewItem_PreviewMouseRightButtonDown" HorizontalAlignment="Left" Margin="12,0,0,0" Name="treeView1" VerticalAlignment="Top" Width="120">
<TreeViewItem Header="哈哈">
<TreeViewItem Header="呵呵"/>
<TreeViewItem Header="嘿嘿" />
<TreeViewItem Header="哈哈哈哈" />
</TreeViewItem>
<TreeViewItem Header="呵呵">
<TreeViewItem Header="呵呵呵呵" />
<TreeViewItem Header="呵呵呵呵呵呵" />
</TreeViewItem>
<TreeView.ContextMenu>
<ContextMenu>
<MenuItem Header="点我" Name="miClickMe" Click="miClickMe_Click"/>
<MenuItem Header="别点我" Name="miDontClickMe" Click="miDontClickMe_Click"/>
</ContextMenu>
</TreeView.ContextMenu>
</TreeView>
XAML
private void TreeViewItem_PreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
var treeViewItem = VisualUpwardSearch<TreeViewItem>(e.OriginalSource as DependencyObject) as TreeViewItem;
if (treeViewItem != null)
{
treeViewItem.Focus();
e.Handled = true;
}
}static DependencyObject VisualUpwardSearch<T>(DependencyObject source)
{
while (source != null && source.GetType() != typeof(T))
source = VisualTreeHelper.GetParent(source);return source;
}private void miClickMe_Click(object sender, RoutedEventArgs e)
{
var node = treeView1.SelectedItem as TreeViewItem;
MessageBox.Show("点我" + node.Header);
}private void miDontClickMe_Click(object sender, RoutedEventArgs e)
{
var node = treeView1.SelectedItem as TreeViewItem;
MessageBox.Show("别点我" + node.Header);
}
C#
2.MVVM模式: 下载源代码MVVM模式.zip
1)添加引用:System.Windows.Interactivity.dll。
2)添加MVVMLight引用:GalaSoft.MvvmLight.Extras.WPF4.dll 下载dll
3)添加Prism框架引用:Microsoft.Practices.Prism.dll 下载dll
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:cmd="clr-namespace:GalaSoft.MvvmLight.Command;assembly=GalaSoft.MvvmLight.Extras.WPF4"
Title="MainWindow" Height="350" Width="525">
<Grid>
<TreeView Height="200" HorizontalAlignment="Left" Margin="12,0,0,0" Name="treeView1" VerticalAlignment="Top" Width="120">
<TreeViewItem Header="哈哈">
<TreeViewItem Header="呵呵"/>
<TreeViewItem Header="嘿嘿" />
<TreeViewItem Header="哈哈哈哈" />
</TreeViewItem>
<TreeViewItem Header="呵呵">
<TreeViewItem Header="呵呵呵呵" />
<TreeViewItem Header="呵呵呵呵呵呵" />
</TreeViewItem>
<TreeView.ContextMenu>
<ContextMenu>
<MenuItem Header="点我" Name="miClickMe" />
<MenuItem Header="别点我" Name="miDontClickMe"/>
</ContextMenu>
</TreeView.ContextMenu>
<i:Interaction.Triggers>
<i:EventTrigger EventName="PreviewMouseRightButtonDown">
<cmd:EventToCommand Command="{Binding SelectTreeNodeCommand}" PassEventArgsToCommand="True" />
</i:EventTrigger>
</i:Interaction.Triggers>
</TreeView>
</Grid>
</Window>
XAML
public class MainViewModel:NotificationObject
{
public ICommand SelectTreeNodeCommand { get; set; }public MainViewModel()
{
SelectTreeNodeCommand = new DelegateCommand<RoutedEventArgs>(SelectTreeNodeCommandExec);
}private void SelectTreeNodeCommandExec(RoutedEventArgs e)
{
var treeViewItem = VisualUpwardSearch<TreeViewItem>(e.OriginalSource as DependencyObject) as TreeViewItem;if (treeViewItem == null) return;
treeViewItem.Focus();
e.Handled = true;
}private static DependencyObject VisualUpwardSearch<M>(DependencyObject source)
{
while (source != null && source.GetType() != typeof(M))
{
if (source is Visual || source is Visual3D)
source = VisualTreeHelper.GetParent(source);
else
source = LogicalTreeHelper.GetParent(source);
}
return source;
}}
ViewModel
WPF MVVM TreeView 实现 右键选中 右键菜单