wpf 如何添加WPF treeView节点点击事件获取节点值
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/24880824/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to add WPF treeView Node Click event to get the node value
提问by user3816352
I have a TreeViewin WPF. Now I want to get the TreeViewnode click event so that I can get the value of the node on which the user has clicked.
Here is the Code:
我有一个TreeView在WPF。现在我想获取TreeView节点单击事件，以便我可以获取用户单击的节点的值。这是代码：
<Grid Height="258" Width="275">
<TreeView Height="258" HorizontalAlignment="Left" Name="treeView1" VerticalAlignment="Top" Width="275">
</TreeView>
</Grid>
I have populated this TreeViewfrom the C# code. What event methode do I need to write into c# code to get the value of clicked node by the user in my c# code.
我已经TreeView从 C# 代码填充了它。我需要在 c# 代码中写入什么事件方法才能在我的 c# 代码中获取用户单击节点的值。
Please help me.
请帮我。
Here is the c#.
这是c#。
TreeViewItem treeItem = null;
treeItem = new TreeViewItem();
treeItem.Header = "Name";
Like this i have populated the TreeView
像这样我填充了 TreeView
回答by pushpraj
Since there is no Click event available for TreeViewItem or TreeView so here are possible workaround for the same
由于 TreeViewItem 或 TreeView 没有可用的 Click 事件，因此这里有可能的解决方法
you have two options from C# code
你有两个来自 C# 代码的选项
using MouseLeftButtonUpwhich will trigger every time the mouse left button is released on the item, which is similar to click
using MouseLeftButtonUpwhich 将在每次在 item 上释放鼠标左键时触发，类似于 click
void preparemethod()
{
...
TreeViewItem treeItem = null;
treeItem = new TreeViewItem();
treeItem.Header = "Name";
treeItem.MouseLeftButtonUp += treeItem_MouseLeftButtonUp;
}
void treeItem_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
//your logic here
}
or use Selected as trigger, may not trigger if a selected element is clicked
或使用 Selected 作为触发器，如果单击所选元素可能不会触发
void preparemethod()
{
...
TreeViewItem treeItem = null;
treeItem = new TreeViewItem();
treeItem.Header = "Name";
treeItem.Selected += treeItem_Selected;
}
void treeItem_Selected(object sender, RoutedEventArgs e)
{
//your logic here
}
in both of the approach the sender is the node which has been clicked. you can use as
在这两种方法中，发送者都是被点击的节点。你可以用作
example
例子
void treeItem_Selected(object sender, RoutedEventArgs e)
{
TreeViewItem item = sender as TreeViewItem;
//you can access item properties eg item.Header etc.
//your logic here
}
