TreeNodeCollection.AddRange(TreeNode[]) 方法

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

将先前创建的一组树节点添加到集合中。

public:
 virtual void AddRange(cli::array <System::Windows::Forms::TreeNode ^> ^ nodes);

public virtual void AddRange (System.Windows.Forms.TreeNode[] nodes);

abstract member AddRange : System.Windows.Forms.TreeNode[] -> unit
override this.AddRange : System.Windows.Forms.TreeNode[] -> unit

Public Overridable Sub AddRange (nodes As TreeNode())

参数

nodes

TreeNode[]

表示要添加到集合中的树节点的 TreeNode 对象数组。

例外

ArgumentNullException

nodes 为 null。

ArgumentException

nodes 是另一 TreeView 的子级。

示例

下面的代码示例将 从 复制到TreeNodeCollection临时 Array，然后使用 方法将 数组的内容添加到另一个TreeViewAddRange数组。TreeView TreeNodeCollection使用 Clear 方法清除源TreeView中的 。 此示例要求有两 TreeView 个控件，一个控件包含对象的集合 TreeNode 。

private:
   void MyButtonAddAllClick( Object^ /*sender*/, EventArgs^ /*e*/ )
   {
      
      // Get the 'myTreeNodeCollection' from the 'myTreeViewBase' TreeView.
      TreeNodeCollection^ myTreeNodeCollection = myTreeViewBase->Nodes;
      
      // Create an array of 'TreeNodes'.
      array<TreeNode^>^myTreeNodeArray = gcnew array<TreeNode^>(myTreeViewBase->Nodes->Count);
      
      // Copy the tree nodes to the 'myTreeNodeArray' array.
      myTreeViewBase->Nodes->CopyTo( myTreeNodeArray, 0 );
      
      // Remove all the tree nodes from the 'myTreeViewBase' TreeView.
      myTreeViewBase->Nodes->Clear();
      
      // Add the 'myTreeNodeArray' to the 'myTreeViewCustom' TreeView.
      myTreeViewCustom->Nodes->AddRange( myTreeNodeArray );
   }

private void MyButtonAddAllClick(object sender, EventArgs e)
{
   // Get the 'myTreeNodeCollection' from the 'myTreeViewBase' TreeView.
   TreeNodeCollection myTreeNodeCollection = myTreeViewBase.Nodes;
   // Create an array of 'TreeNodes'.
   TreeNode[] myTreeNodeArray = new TreeNode[myTreeViewBase.Nodes.Count];
   // Copy the tree nodes to the 'myTreeNodeArray' array.
   myTreeViewBase.Nodes.CopyTo(myTreeNodeArray,0);
   // Remove all the tree nodes from the 'myTreeViewBase' TreeView.
   myTreeViewBase.Nodes.Clear();
   // Add the 'myTreeNodeArray' to the 'myTreeViewCustom' TreeView.
   myTreeViewCustom.Nodes.AddRange(myTreeNodeArray);
}

Private Sub MyButtonAddAllClick(sender As Object, e As EventArgs)
   ' Get the 'myTreeNodeCollection' from the 'myTreeViewBase' TreeView.
   Dim myTreeNodeCollection As TreeNodeCollection = myTreeViewBase.Nodes
   ' Create an array of 'TreeNodes'.
   Dim myTreeNodeArray(myTreeViewBase.Nodes.Count-1) As TreeNode
   ' Copy the tree nodes to the 'myTreeNodeArray' array.
   myTreeViewBase.Nodes.CopyTo(myTreeNodeArray, 0)
   ' Remove all the tree nodes from the 'myTreeViewBase' TreeView.
   myTreeViewBase.Nodes.Clear()
   ' Add the 'myTreeNodeArray' to the 'myTreeViewCustom' TreeView.
      myTreeViewCustom.Nodes.AddRange(myTreeNodeArray)
End Sub

注解

TreeNode数组中包含的nodes对象追加到集合的末尾。

可以使用 AddRange 方法将一组以前创建TreeNode的对象快速添加到集合中，而不是使用 Add 方法手动将每个TreeNode对象添加到集合中。

若要删除 TreeNode 之前添加的 Remove，请使用 、 RemoveAt或 Clear 方法。

另请参阅

• Add(String)
• CopyTo(Array, Int32)