TreeNode.NextNode 属性

定义

命名空间:

System.Windows.Forms

程序集:

System.Windows.Forms.dll

获取下一个同级树节点。

public:
 property System::Windows::Forms::TreeNode ^ NextNode { System::Windows::Forms::TreeNode ^ get(); };

public System.Windows.Forms.TreeNode NextNode { get; }

[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.TreeNode NextNode { get; }

member this.NextNode : System.Windows.Forms.TreeNode

[<System.ComponentModel.Browsable(false)>]
member this.NextNode : System.Windows.Forms.TreeNode

Public ReadOnly Property NextNode As TreeNode

属性值

TreeNode

TreeNode，表示下一个同级树节点。

属性

BrowsableAttribute

示例

下面的代码示例在确定TreeNode是否已选中传入项以及要选择哪个TreeNode项后，选择相应的TreeNode选项。 此示例要求具有FormTreeView包含多个TreeNode对象的控件TreeNodeCollection。 它还需要具有以下 ComboBox 项：“Previous”、“PreviousVisible”、“NextVisible”、“NextVisible”、“First”和“Last”。

void SelectNode( TreeNode^ node )
{
   if ( node->IsSelected )
   {
      
      // Determine which TreeNode to select.
      String^ str = myComboBox->Text;
      if ( str->Equals( "Previous" ) )
               node->TreeView->SelectedNode = node->PrevNode;
      else
      if ( str->Equals( "PreviousVisible" ) )
               node->TreeView->SelectedNode = node->PrevVisibleNode;
      else
      if ( str->Equals( "Next" ) )
               node->TreeView->SelectedNode = node->NextNode;
      else
      if ( str->Equals( "NextVisible" ) )
               node->TreeView->SelectedNode = node->NextVisibleNode;
      else
      if ( str->Equals( "First" ) )
               node->TreeView->SelectedNode = node->FirstNode;
      else
      if ( str->Equals( "Last" ) )
               node->TreeView->SelectedNode = node->LastNode;
   }

   node->TreeView->Focus();
}

private void SelectNode(TreeNode node)
{
    if(node.IsSelected)
    {
        // Determine which TreeNode to select.
        switch(myComboBox.Text)
        {
            case "Previous":
                node.TreeView.SelectedNode = node.PrevNode;
                break;
            case "PreviousVisible":
                node.TreeView.SelectedNode = node.PrevVisibleNode;
                break;
            case "Next":
                node.TreeView.SelectedNode = node.NextNode;
                break;
            case "NextVisible":
                node.TreeView.SelectedNode = node.NextVisibleNode;
                break;
            case "First":
                node.TreeView.SelectedNode = node.FirstNode;
                break;
            case "Last":
                node.TreeView.SelectedNode = node.LastNode;
                break;
        }
    }
    node.TreeView.Focus();
}

Private Sub SelectNode(node As TreeNode)
   If node.IsSelected Then
      ' Determine which TreeNode to select.
      Select Case myComboBox.Text
         Case "Previous"
            node.TreeView.SelectedNode = node.PrevNode
         Case "PreviousVisible"
            node.TreeView.SelectedNode = node.PrevVisibleNode
         Case "Next"
            node.TreeView.SelectedNode = node.NextNode
         Case "NextVisible"
            node.TreeView.SelectedNode = node.NextVisibleNode
         Case "First"
            node.TreeView.SelectedNode = node.FirstNode
         Case "Last"
            node.TreeView.SelectedNode = node.LastNode
      End Select
   End If
   node.TreeView.Focus()
End Sub

注解

是NextNode树节点父TreeNode级属性中TreeNodeCollectionNodes存储的下一个同TreeNode级。 如果没有下一个树节点，则 NextNode 属性返回 null。

另请参阅

• PrevNode
• LastNode
• FirstNode