TreeNode.Handle 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

取得樹狀節點的控制代碼。

public:
 property IntPtr Handle { IntPtr get(); };

public IntPtr Handle { get; }

[System.ComponentModel.Browsable(false)]
public IntPtr Handle { get; }

member this.Handle : nativeint

[<System.ComponentModel.Browsable(false)>]
member this.Handle : nativeint

Public ReadOnly Property Handle As IntPtr

屬性值

IntPtr

nativeint

樹狀節點控制代碼。

屬性

BrowsableAttribute

範例

下列程式碼範例會取得 TreeNode 已折迭的 ，並使用其 Handle 屬性建立其複本。 原始 TreeNode 的 會從 TreeNodeCollection 中移除，並將複本新增至集合。 此範例會要求您具有 Form 控制項 TreeView 的 。 控制項 TreeView 應該有兩個以上的根節點，每個節點至少有一個子節點。

private:
   void treeView1_AfterCollapse( Object^ /*sender*/, TreeViewEventArgs^ e )
   {
      // Create a copy of the e.Node from its Handle.
      TreeNode^ tn = TreeNode::FromHandle( e->Node->TreeView, e->Node->Handle );
      tn->Text = String::Concat( tn->Text, "Copy" );

      // Remove the e.Node so it can be replaced with tn.
      e->Node->Remove();

      // Add tn to the TreeNodeCollection.
      treeView1->Nodes->Add( tn );
   }

private void treeView1_AfterCollapse(object sender, TreeViewEventArgs e)
{
   // Create a copy of the e.Node from its Handle.
   TreeNode tn = TreeNode.FromHandle(e.Node.TreeView, e.Node.Handle);
   tn.Text += "Copy";
   // Remove the e.Node so it can be replaced with tn.
   e.Node.Remove();
   // Add tn to the TreeNodeCollection.
   treeView1.Nodes.Add(tn);
}

Private Sub treeView1_AfterCollapse(sender As Object, _
  e As TreeViewEventArgs) Handles treeView1.AfterCollapse
   ' Create a copy of the e.Node from its Handle.
   Dim tn As TreeNode = TreeNode.FromHandle(e.Node.TreeView, e.Node.Handle)
   tn.Text += "Copy"
   ' Remove the e.Node so it can be replaced with tn.
   e.Node.Remove()
   ' Add tn to the TreeNodeCollection.
   treeView1.Nodes.Add(tn)
End Sub

備註

如果參考 屬性時 Handle 尚未建立控制碼，則會建立它。