Windows 窗体
TreeView
控件显示节点的层次结构，类似于 Windows 资源管理器左窗格中显示的文件和文件夹。 通过设置
ContextMenuStrip
属性，你可以在用户右键单击
TreeView
控件时向他们提供上下文相关操作。 通过将
ContextMenuStrip
组件与单个
TreeNode
项相关联，可以将自定义的快捷菜单功能级别添加到
TreeView
控件。
使用适当的属性设置实例化
TreeView
控件，创建根
TreeNode
，然后添加子节点。
实例化
ContextMenuStrip
组件，然后为要在运行时提供的每个操作添加一个
ToolStripMenuItem
。
将相应
TreeNode
的
ContextMenuStrip
属性设置为创建的快捷菜单。
设置此属性后，右键单击节点时将显示快捷菜单。
下面的代码示例创建一个基本的
TreeView
以及与
TreeView
的根
TreeNode
相关联的
ContextMenuStrip
。 你需要将菜单选项自定义为适合你开发的
TreeView
的菜单选项。 此外，还需要编写代码来处理这些菜单项的
Click
事件。
// Declare the TreeView and ContextMenuStrip
private:
TreeView^ menuTreeView;
private:
System::Windows::Forms::ContextMenuStrip^ docMenu;
public:
void InitializeMenuTreeView()
// Create the TreeView.
menuTreeView = gcnew TreeView();
menuTreeView->Size = System::Drawing::Size(200, 200);
// Create the root node.
TreeNode^ docNode = gcnew TreeNode("Documents");
// Add some additional nodes.
docNode->Nodes->Add("phoneList.doc");
docNode->Nodes->Add("resume.doc");
// Add the root nodes to the TreeView.
menuTreeView->Nodes->Add(docNode);
// Create the ContextMenuStrip.
docMenu = gcnew System::Windows::Forms::ContextMenuStrip();
//Create some menu items.
ToolStripMenuItem^ openLabel = gcnew ToolStripMenuItem();
openLabel->Text = "Open";
ToolStripMenuItem^ deleteLabel = gcnew ToolStripMenuItem();
deleteLabel->Text = "Delete";
ToolStripMenuItem^ renameLabel = gcnew ToolStripMenuItem();
renameLabel->Text = "Rename";
//Add the menu items to the menu.
docMenu->Items->AddRange(gcnew array<ToolStripMenuItem^>{openLabel,
deleteLabel, renameLabel});
// Set the ContextMenuStrip property to the ContextMenuStrip.
docNode->ContextMenuStrip = docMenu;
// Add the TreeView to the form.
this->Controls->Add(menuTreeView);
// Declare the TreeView and ContextMenuStrip
private TreeView menuTreeView;
private ContextMenuStrip docMenu;
public void InitializeMenuTreeView()
// Create the TreeView.
menuTreeView = new TreeView();
menuTreeView.Size = new Size(200, 200);
// Create the root node.
TreeNode docNode = new TreeNode("Documents");
// Add some additional nodes.
docNode.Nodes.Add("phoneList.doc");
docNode.Nodes.Add("resume.doc");
// Add the root nodes to the TreeView.
menuTreeView.Nodes.Add(docNode);
// Create the ContextMenuStrip.
docMenu = new ContextMenuStrip();
//Create some menu items.
ToolStripMenuItem openLabel = new ToolStripMenuItem();
openLabel.Text = "Open";
ToolStripMenuItem deleteLabel = new ToolStripMenuItem();
deleteLabel.Text = "Delete";
ToolStripMenuItem renameLabel = new ToolStripMenuItem();
renameLabel.Text = "Rename";
//Add the menu items to the menu.
docMenu.Items.AddRange(new ToolStripMenuItem[]{openLabel,
deleteLabel, renameLabel});
// Set the ContextMenuStrip property to the ContextMenuStrip.
docNode.ContextMenuStrip = docMenu;
// Add the TreeView to the form.
this.Controls.Add(menuTreeView);
' Declare the TreeView and ContextMenuStrip
Private menuTreeView As TreeView
Private docMenu As ContextMenuStrip
Public Sub InitializeMenuTreeView()
' Create the TreeView.
menuTreeView = New TreeView()
menuTreeView.Size = New Size(200, 200)
' Create the root node.
Dim docNode As New TreeNode("Documents")
' Add some additional nodes.
docNode.Nodes.Add("phoneList.doc")
docNode.Nodes.Add("resume.doc")
' Add the root nodes to the TreeView.
menuTreeView.Nodes.Add(docNode)
' Create the ContextMenuStrip.
docMenu = New ContextMenuStrip()
'Create some menu items.
Dim openLabel As New ToolStripMenuItem()
openLabel.Text = "Open"
Dim deleteLabel As New ToolStripMenuItem()
deleteLabel.Text = "Delete"
Dim renameLabel As New ToolStripMenuItem()
renameLabel.Text = "Rename"
'Add the menu items to the menu.
docMenu.Items.AddRange(New ToolStripMenuItem() _
{openLabel, deleteLabel, renameLabel})
' Set the ContextMenuStrip property to the ContextMenuStrip.
docNode.ContextMenuStrip = docMenu
' Add the TreeView to the form.
Me.Controls.Add(menuTreeView)
End Sub
ContextMenuStrip
TreeView 控件
