如何：將捷徑功能表附加至 TreeView 節點

Windows Forms TreeView 控制項會顯示節點的階層，類似於在 [Windows 檔案總管] 左窗格中顯示的檔案和資料夾。 藉由設定 ContextMenuStrip 屬性，您就可以在使用者在 TreeView 控制項按右鍵時，將內容有區別的作業提供給使用者。 藉由將 ContextMenuStrip 元件與個別 TreeNode 項目產生關聯，您就可以將自訂的 [捷徑功能表] 功能層級新增至 TreeView 控制項。

以程式設計方式建立 [捷徑功能表] 與 TreeNode 的關聯

1. 使用適當的屬性設定具現化 TreeView 控制項、建立根 TreeNode，然後新增子節點。

2. 具現化 ContextMenuStrip 元件，然後針對您想要在執行階段提供的每個作業新增 ToolStripMenuItem。

3. 將適當 ContextMenuStrip 的 TreeNode 屬性設定為您建立的 [捷徑功能表]。

4. 若設定此屬性，當您在節點上按右鍵時，就會顯示 [捷徑功能表]。

下列程式碼範例會建立與 TreeView 的根 ContextMenuStrip 相關聯的基本 TreeNode 和 TreeView。 您必須將功能表選項自訂為符合您所開發的 TreeView。 此外，您會想要撰寫程式碼來處理這些功能表項目的 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

另請參閱

• ContextMenuStrip
• TreeView 控制項