WPF双击TreeviewItem子节点
我在树状视图中有一个树状视图项,该树状视图将绑定一个列表:WPF双击TreeviewItem子节点,wpf,treeview,double-click,treeviewitem,Wpf,Treeview,Double Click,Treeviewitem,我在树状视图中有一个树状视图项,该树状视图将绑定一个列表: <TreeViewItem Name="tviOffline" Foreground="Red" FontWeight="Bold" Header="Offline"> <TreeViewItem.ItemTemplate> <DataTemplate DataType="{x:Type lo
<TreeViewItem Name="tviOffline" Foreground="Red" FontWeight="Bold"
Header="Offline">
<TreeViewItem.ItemTemplate>
<DataTemplate DataType="{x:Type local:Buddy}">
<StackPanel>
<TextBlock Text="{Binding Nick}" FontSize="10" Foreground="#8CFFD528" />
</StackPanel>
</DataTemplate>
</TreeViewItem.ItemTemplate>
</TreeViewItem>
我不知道如何让每个孩子都有一个双击事件
感谢您的帮助。非常感谢。
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<EventSetter Event="MouseDoubleClick" Handler="OnItemMouseDoubleClick" />
...
...
感谢Aurelian Ribon在这方面取得了90%的成功。在Stack Exchange上的其他帖子中,双击问题似乎是众所周知的。只是将两种解决方案合并为一个答案 这是我让它在所有情况下都能工作的唯一方法:
void MyTreeView_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
{
var clickedItem = TryGetClickedItem(myTreeView, e);
if (clickedItem == null)
return;
e.Handled = true; // to cancel expanded/collapsed toggle
DoStuff(clickedItem);
}
TreeViewItem TryGetClickedItem(TreeView treeView, MouseButtonEventArgs e)
{
var hit = e.OriginalSource as DependencyObject;
while (hit != null && !(hit is TreeViewItem))
hit = VisualTreeHelper.GetParent(hit);
return hit as TreeViewItem;
}
更简单的是,我没有使用
TryGetClickedItem
,而是使用了hit.GetVisualParent()。这比预期的要容易得多。谢谢-现在我知道,如果您的事件设置为ItemContainerStyle,那么实际上不需要在可视化树中进行向上搜索来查找TreeItem。
private void OnItemMouseDoubleClick(object sender, MouseButtonEventArgs args)
{
if (sender is TreeViewItem)
{
if (!((TreeViewItem)sender).IsSelected)
{
return;
}
}
.... do stuff.
}
void MyTreeView_PreviewMouseDoubleClick(object sender, MouseButtonEventArgs e)
{
var clickedItem = TryGetClickedItem(myTreeView, e);
if (clickedItem == null)
return;
e.Handled = true; // to cancel expanded/collapsed toggle
DoStuff(clickedItem);
}
TreeViewItem TryGetClickedItem(TreeView treeView, MouseButtonEventArgs e)
{
var hit = e.OriginalSource as DependencyObject;
while (hit != null && !(hit is TreeViewItem))
hit = VisualTreeHelper.GetParent(hit);
return hit as TreeViewItem;
}