C# 在WPF中获取TreeViewItem
当我单击BTNAddProvince时,如何获取Treeviewitem 在我的例子中,button的父节点是stackpanel,而我无法获取stackpanel的父节点(这是获取节点的好方法吗?) 有什么想法吗C# 在WPF中获取TreeViewItem,c#,wpf,C#,Wpf,当我单击BTNAddProvince时,如何获取Treeviewitem 在我的例子中,button的父节点是stackpanel,而我无法获取stackpanel的父节点(这是获取节点的好方法吗?) 有什么想法吗 <HierarchicalDataTemplate DataType="{x:Type MyService:Region}" ItemsSource="{Binding Path=ListOfProvince
<HierarchicalDataTemplate DataType="{x:Type MyService:Region}"
ItemsSource="{Binding Path=ListOfProvinces}">
<StackPanel Orientation="Horizontal">
<TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=Name}"/>
<TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text=" H:"/>
<TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text="{Binding Path=NumberOfHotels}"/>
<TextBlock TextAlignment="Justify" VerticalAlignment="Center" Text=" "/>
<Button Name="BTNAddProvince" Height="20" Content="+" Click="BTNAddProvince_Click"></Button>
</StackPanel>
</HierarchicalDataTemplate>
我建议您在树状视图中使用基于MVVM的设计(有关如何实现这一点的精彩文章,请参阅)。然后将按钮绑定到ViewModel的命令。这样,您就可以在项目的ViewModel上调用该命令,然后根据项目执行特定的逻辑。我建议您在TreeView中使用基于MVVM的设计(请参阅一篇很好的文章如何做到这一点)。然后将按钮绑定到ViewModel的命令。这样,您可以在项目的ViewModel上调用命令,然后根据项目执行特定的逻辑。您可以通过以下方式获得TreeView项目:
public New()
{
// This call is required by the designer.
InitializeComponent();
_Items.Add(new Company { Name = "Company1", NumberOfHotels = 5 });
_Items.Add(new Company { Name = "Company2", NumberOfHotels = 15 });
_Items.Add(new Company { Name = "Company3", NumberOfHotels = 30 });
tvItems.ItemsSource = _Items;
}
private void BTNAddProvince_Click(System.Object sender, System.Windows.RoutedEventArgs e)
{
Button button = sender as Button;
if (button == null) return;
TreeViewItem treeViewItem = GetVisualParent<TreeViewItem>(button);
}
public static T GetVisualParent<T>(Visual referencedVisual) where T : Visual
{
Visual parent = referencedVisual;
while (parent != null && !object.ReferenceEquals(parent.GetType, typeof(T))) {
parent = VisualTreeHelper.GetParent(parent) as Visual;
}
var parent1 = VisualTreeHelper.GetParent(referencedVisual);
return parent as T;
}
public New()
{
//设计器需要此调用。
初始化组件();
_Items.Add(新公司{Name=“Company1”,NumberOfHotels=5});
_Items.Add(新公司{Name=“Company2”,NumberOfHotels=15});
_Items.Add(新公司{Name=“Company3”,NumberOfHotels=30});
tviitems.ItemsSource=\u项目;
}
私有无效BTNAddProvince_单击(System.Object sender,System.Windows.RoutedEventTargets e)
{
按钮按钮=发送器为按钮;
如果(按钮==null)返回
TreeViewItem TreeViewItem=GetVisualParent(按钮);
}
公共静态T GetVisualParent(可视引用Visual),其中T:Visual
{
视觉父项=参考视觉;
while(parent!=null&&!object.ReferenceEquals(parent.GetType,typeof(T))){
parent=visualtreeheloper.GetParent(parent)作为可视对象;
}
var parent1=visualtreeheloper.GetParent(referencedvisical);
将父对象返回为T;
}
您可以通过以下方式获取TreeView项目:
public New()
{
// This call is required by the designer.
InitializeComponent();
_Items.Add(new Company { Name = "Company1", NumberOfHotels = 5 });
_Items.Add(new Company { Name = "Company2", NumberOfHotels = 15 });
_Items.Add(new Company { Name = "Company3", NumberOfHotels = 30 });
tvItems.ItemsSource = _Items;
}
private void BTNAddProvince_Click(System.Object sender, System.Windows.RoutedEventArgs e)
{
Button button = sender as Button;
if (button == null) return;
TreeViewItem treeViewItem = GetVisualParent<TreeViewItem>(button);
}
public static T GetVisualParent<T>(Visual referencedVisual) where T : Visual
{
Visual parent = referencedVisual;
while (parent != null && !object.ReferenceEquals(parent.GetType, typeof(T))) {
parent = VisualTreeHelper.GetParent(parent) as Visual;
}
var parent1 = VisualTreeHelper.GetParent(referencedVisual);
return parent as T;
}
public New()
{
//设计器需要此调用。
初始化组件();
_Items.Add(新公司{Name=“Company1”,NumberOfHotels=5});
_Items.Add(新公司{Name=“Company2”,NumberOfHotels=15});
_Items.Add(新公司{Name=“Company3”,NumberOfHotels=30});
tviitems.ItemsSource=\u项目;
}
私有无效BTNAddProvince_单击(System.Object sender,System.Windows.RoutedEventTargets e)
{
按钮按钮=发送方作为按钮;
如果(按钮==null)返回
TreeViewItem TreeViewItem=GetVisualParent(按钮);
}
公共静态T GetVisualParent(可视引用Visual),其中T:Visual
{
视觉父项=参考视觉;
while(parent!=null&&!object.ReferenceEquals(parent.GetType,typeof(T))){
parent=visualtreeheloper.GetParent(parent)作为可视对象;
}
var parent1=visualtreeheloper.GetParent(referencedvisical);
将父对象返回为T;
}
!object.ReferenceEquals(parent.GetType,typeof(T))!object.ReferenceEquals(parent.GetType,typeof(T))+1表示treeView.ItemContainerGenerator.ContainerFromItem(p),这正是我从绑定数据项获取treeView.ItemContainerGenerator.ContainerFromItem(p)所需的,谢谢。+1表示treeView.ItemContainerGenerator.ContainerFromItem(p),这正是我从绑定数据项获取treeView所需的,谢谢。