<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> void Select_Change(Object sender, Even
TreeView控件是一种常见的用户界面元素,用于展示层次结构的数据,如文件系统、组织结构或任何具有父子关系的数据集合。悬停菜单(Hover Menu)则是一种交互设计,当用户将鼠标悬停在某个特定元素...
ItemContainerStyleSelector:用于根据节点数据选择不同的样式。 VirtualizingStackPanel.IsVirtualizing:表示是否启用虚拟化来优化TreeView的性能。 VirtualizingStackPanel.VirtualizationMode:表示虚拟化的模式,有Standard、Recycling和None三种模式可选。 🔎2.常用场景 WPF中TreeView控件常用场景有: 文件和文件夹结构展示——...
ObjectSelectorEditor.ApplyTreeViewThemeStyles(TreeView) 方法参考 反馈 定义命名空间: System.ComponentModel.Design 程序集: System.Windows.Forms.Design.dll 修改Windows 窗体TreeView控件以使用新的资源管理器样式主题。 C# 复制 public static void ApplyTreeViewThemeStyles (System.Windows.Forms.Tre...
PerformSelect() 从关联的数据源中检索数据。 (继承自 HierarchicalDataBoundControl) RaiseBubbleEvent(Object, EventArgs) 将所有事件源及其信息分配给控件的父级。 (继承自 Control) RaiseCallbackEvent(String) 使用指定参数引发回调事件。 RaisePostBackEvent(String) 启用TreeView 控件以处理将窗体发送到服务器...
class YjStructParaSelectitem;class YjAddStructItemDelegate: public QStyledItemDelegate{Q_OBJECTpublic:YjAddStructItemDelegate(QObject *parent);~YjAddStructItemDelegate();QWidget* createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override;...
[System.ComponentModel.Bindable(true)]publicobjectSelectedItem {get; } Property Value Object The selected object in theTreeView, ornullif no item is selected. The default value isnull. Attributes BindableAttribute Examples The following example shows how to get the value of theSelectedItemproperty. ...
privatevoidTreeView1_BeforeSelect(Object sender, TreeViewCancelEventArgs e){ System.Text.StringBuilder messageBoxCS =newSystem.Text.StringBuilder(); messageBoxCS.AppendFormat("{0} = {1}","Node", e.Node ); messageBoxCS.AppendLine(); messageBoxCS.AppendFormat("{0} = {1}","Action", e.Action ...
NewNode.SelectAction = TreeNodeSelectAction.None; // Add the new node to the ChildNodes collection of the parent node. node.ChildNodes.Add(NewNode); } } } DataSet RunQuery(String QueryString) { // Declare the connection string. This example uses Microsoft SQL Server and connects to the...
NewNode.SelectAction = TreeNodeSelectAction.None; // Add the new node to the ChildNodes collection of the parent node. node.ChildNodes.Add(NewNode); } } } DataSet RunQuery(String QueryString) { // Declare the connection string. This example uses Microsoft SQL Server and connects to the //...