Header="Root"> <TreeViewItem Header="Child 1"></TreeViewItem> <TreeViewItem Header="Child 2"></TreeViewItem> </TreeViewItem></TreeView>为节点添加图标:<TreeView Name="treeView"> <TreeViewItem }"> </TreeViewItem> <TreeViewItem Header="Child 2" HeaderTemplate="{StaticResource ItemTemplate}"> </TreeViewItem> </TreeViewItem></TreeView><DataTemplate x:Key="ItemTemplate </<em>TreeViewItem</em>> </<em>TreeViewItem</em>> </TreeView> </Grid></Window
Header="TreeView"> <TreeViewItem Header="TranslateTransform"/> <TreeViewItem Header="RotateTransform"/> <TreeViewItem Header="ScaleTransform"/> < TreeViewItem Header="SkewTransform"/> <TreeViewItem Header="TransformGroup"/> <TreeViewItem Header="MatrixTransform"/> </TreeViewItem> <TreeView.ItemContainerStyle > <Style TargetType="{x:Type <em>TreeViewItem</em>}" > <Setter Property="cal
TreeView选择事件执行两次 Very often, we need to execute some code in SelectedItemChanged depending on the selected TreeViewItem sender, RoutedPropertyChangedEventArgs<object> e) { //节点(是子节点或者是根节点) TreeViewItem item = treeView1.SelectedItem as TreeViewItem; //获取父节点 TreeViewItem parent = item.Parent as TreeViewItem; //判断父节点是否存在 if (parent !
ViewModel 对象不知道 TreeViewItem 的存在,也不能约束他们,所以期望 ViewModel 对象把 TreeViewItem 带到视野中是没有意义的。 objects. /// 暴露可被应用到 TreeViewItem 对象的附加行为。 treeViewItem) { return (bool)treeViewItem.GetValue(IsBroughtIntoViewWhenSelectedProperty ); } public static void SetIsBroughtIntoViewWhenSelected(TreeViewItem treeViewItem, bool value as TreeViewItem; if (item !
新建WPF应用程序,在界面上添加TreeView控件,最直接简单的用法是在TreeView下添加TreeViewItem节点,然后设置它的header,如果你的层级关系固定,内容比较少,可以直接采用这种方式 <TreeView> <TreeViewItem Header="食物"> <TreeViewItem Header="水果"> <TreeViewItem Header="苹果"></TreeViewItem> <TreeViewItem Header="梨子"></TreeViewItem> </TreeViewItem > <TreeViewItem Header="蔬菜"> <TreeViewItem Header="大白菜"></TreeViewItem> <TreeViewItem Header="空心菜"></TreeViewItem> </TreeViewItem> </TreeViewItem> </TreeView> 我们还可以使用绑定的方式进行数据展示
foreach (var item in this.RootNode) { TreeViewItem rootItem = new TreeViewItem() { Header = item.Name, Tag = item.Id }; treeView.Items.Add ); } }); } private void TreeViewItem_SelectedItemChanged( sender, RoutedPropertyChangedEventArgs<object> e) { var parentItem = e.NewValue as TreeViewItem { TreeViewItem newChildItem = new TreeViewItem() { Header = item.Name
param> private void ItemCheckbox_Click(object sender, RoutedEventArgs e) { TreeViewItem summary> /// <param name="item"></param> /// <returns></returns> private static TreeViewItem parentTreeViewItem = parent as TreeViewItem; return (parentTreeViewItem ! summary> /// <param name="item"></param> private static void UpdateParentCheckedState(TreeViewItem item) { //取得父节点 TreeViewItem parent = GetParentTreeViewItem(item);
代码如下: <TreeViewItem> <TreeViewItem.Template> <ControlTemplate> <Button HorizontalAlignment CommandParameter="PageMain" Style="{StaticResource NullButton}"></Button> </ControlTemplate> </TreeViewItem.Template > </TreeViewItem> <TreeViewItem> <TreeViewItem.Template> <ControlTemplate> <Button > </TreeViewItem> /* 省略了框架其他元素代码 */ <Frame x:Name="frameMain" Content="{Binding FrameSource,Mode=TwoWay 由于<em>TreeViewItem</em>没有Command的依赖属性,所以我们修改了他的模板,然后用模板内的Button的Command属性绑定了VM中的ChangeFrameSourceCommand属性。
方法一 这个方法是参考《【翻译】WPF 中附加行为的介绍 Introduction to Attached Behaviors in WPF》文章中的将 TreeViewItem(树状列表项)带到视野中的方法 ,我稍微改造了一下,使其同时支持 DataGridRow 和 TreeViewItem,并且之后如果有其它受支持的类型也可以方便地扩展。 row.Selected -= OnItemSelected; break; } case TreeViewItem treeViewItem: { if ((bool)e.NewValue) treeViewItem.Selected += OnItemSelected; else treeViewItem.Selected -= OnItemSelected
called twice Very often, we need to execute some code in SelectedItemChanged depending on the selected TreeViewItem
/> <local2:MultiValueConverter x:Key="MultiValueConverter" /> <Style TargetType="{x:Type <em>TreeViewItem</em> Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type <em>TreeViewItem</em> treeItem = control.ItemContainerGenerator.ContainerFromItem(item) as <em>TreeViewItem</em>; = VisualUpwardSearch<<em>TreeViewItem</em>>(e.OriginalSource as DependencyObject) as <em>TreeViewItem</em>; //让其选中 if (<em>treeViewItem</em> !
InitParentMenu(tMenu); foreach (var tm in tMenu) { var ttvi = new TreeViewItem m.OrderNum); foreach (var sm in sMenu) { var stvi = new TreeViewItem , RoutedPropertyChangedEventArgs<object> e) { var item = MenuTV.SelectedItem as TreeViewItem
TreeViewItem更新: 将 TreeViewItem 展开状态暴露为根节点事件 为 TreeView 添加了一个路由事件,以便开发者能够便捷地追踪 TreeViewItem 展开状态的变化。
Grouping》、《MSDN Sample Code:Grouping and Virtualization》、《Problem: ListView Virtualization》 《Virtualizing TreeViewItem MS 自己的相关资源: 《MSDN Control Performance》、《How to: Find a TreeViewItem in a TreeView》(如何在 UIV 的情况下找到控件)、
其实这个只需要设置一下ItemContainerStyle的Style就可以了,如下 <TreeView.ItemContainerStyle> <Style TargetType="{x:Type <em>TreeViewItem</em>
今天我先做一个完全用样式加工的例子,有时间我再把它做深加工写成一下通能形式 我们要先把treeView重写一下 public class TreeListView : TreeView { //这两个默认的是TreeViewItem TreeListViewItem; return _isTreeLVI; } } public class TreeListViewItem : TreeViewItem
<Condition Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type <em>TreeViewItem</em> <Condition Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type TreeViewItem
在NbTreeView控件TreeViewItem填充内容项,当设置IsExpanded属性为true表示展开,如果想获取选中状态使用IsSelected。
Trigger> </ControlTemplate.Triggers> </ControlTemplate> <Style TargetType="<em>TreeViewItem</em> Property="Template"> <Setter.Value> <ControlTemplate TargetType="<em>TreeViewItem</em>
Trigger> </ControlTemplate.Triggers> </ControlTemplate> <Style TargetType="<em>TreeViewItem</em> Property="Template"> <Setter.Value> <ControlTemplate TargetType="<em>TreeViewItem</em>