C# ObjectListView TreeListView 添加多级节点

Question

我正在使用 ObjectListView.Official.2.9.1.nupkg
http://objectlistview.sourceforge.net/cs/index.html

我如何将三级孙子添加到 TreeListView 中（在“CHILD_1_1”内并使其可扩展）？

public partial class DocumentLink : Form
{
    // embedded class
    class Node
    {
        public string Name { get; private set; }
        public string Column1 { get; private set; }
        public string Column2 { get; private set; }
        public string Column3 { get; private set; }
        public List<Node> Children { get; private set; }
        public Node(string name, string col1, string col2, string col3)
        {
            this.Name = name;
            this.Column1 = col1;
            this.Column2 = col2;
            this.Column3 = col3;
            this.Children = new List<Node>();
        }
    }

    // private fields
    private List<Node> data;
    private BrightIdeasSoftware.TreeListView treeListView;

    public DocumentLink()
    {
        InitializeComponent();
        AddTree();
        InitializeData();
        FillTree();
    }

    // private methods
    private void FillTree()
    {
        // set the delegate that the tree uses to know if a node is expandable
        this.treeListView.CanExpandGetter = x => (x as Node).Children.Count > 0;
        // set the delegate that the tree uses to know the children of a node
        this.treeListView.ChildrenGetter = x => (x as Node).Children;

        // create the tree columns and set the delegates to print the desired object proerty
        var nameCol = new BrightIdeasSoftware.OLVColumn("Name", "Name");
        nameCol.AspectGetter = x => (x as Node).Name;

        var col1 = new BrightIdeasSoftware.OLVColumn("Column1", "Column1");
        col1.AspectGetter = x => (x as Node).Column1;

        var col2 = new BrightIdeasSoftware.OLVColumn("Column2", "Column2");
        col2.AspectGetter = x => (x as Node).Column2;

        var col3 = new BrightIdeasSoftware.OLVColumn("Column3", "Column3");
        col3.AspectGetter = x => (x as Node).Column3;

        // add the columns to the tree
        this.treeListView.Columns.Add(nameCol);
        this.treeListView.Columns.Add(col1);
        this.treeListView.Columns.Add(col2);
        this.treeListView.Columns.Add(col3);

        // set the tree roots
        this.treeListView.Roots = data;
    }

    private void InitializeData()
    {
        // create fake nodes
        var parent1 = new Node("PARENT1", "-", "-", "-");
        parent1.Children.Add(new Node("CHILD_1_1", "A", "X", "1"));
        parent1.Children.Add(new Node("CHILD_1_2", "A", "Y", "2"));
        parent1.Children.Add(new Node("CHILD_1_3", "A", "Z", "3"));

        var parent2 = new Node("PARENT2", "-", "-", "-");
        parent2.Children.Add(new Node("CHILD_2_1", "B", "W", "7"));
        parent2.Children.Add(new Node("CHILD_2_2", "B", "Z", "8"));
        parent2.Children.Add(new Node("CHILD_2_3", "B", "J", "9"));

        var parent3 = new Node("PARENT3", "-", "-", "-");
        parent3.Children.Add(new Node("CHILD_3_1", "C", "R", "10"));
        parent3.Children.Add(new Node("CHILD_3_2", "C", "T", "12"));
        parent3.Children.Add(new Node("CHILD_3_3", "C", "H", "14"));

        data = new List<Node> { parent1, parent2, parent3 };
    }

    private void AddTree()
    {
        treeListView = new BrightIdeasSoftware.TreeListView();
        treeListView.Dock = DockStyle.Fill;
        this.Controls.Add(treeListView);
    }
}

现在我只能添加第二个级别，如图所示。

其他使用这个 Nuget 包，我可以只使用 System.Windows.Forms.ListView 吗？
*带列的 TreeView 列表。

Answer 1

您应该能够按照将第一个 child 添加到第一个 parent 的相同方式执行此操作。
创建节点的实例，然后将其添加到parent，并向其添加其他节点...应该是这样的：

private void InitializeData()
{
    // create fake nodes
    var parent1 = new Node("PARENT1", "-", "-", "-");
    var child1 = new Node("CHILD_1_1", "A", "X", "1");
    parent1.Children.Add(child1);
    var childChild1 = new Node("CHILD_1_1_CHILD", "T", "R", "45");
    child1.Children.Add(childChild1);
    parent1.Children.Add(new Node("CHILD_1_2", "A", "Y", "2"));
    parent1.Children.Add(new Node("CHILD_1_3", "A", "Z", "3"));

    var parent2 = new Node("PARENT2", "-", "-", "-");
    parent2.Children.Add(new Node("CHILD_2_1", "B", "W", "7"));
    parent2.Children.Add(new Node("CHILD_2_2", "B", "Z", "8"));
    parent2.Children.Add(new Node("CHILD_2_3", "B", "J", "9"));

    var parent3 = new Node("PARENT3", "-", "-", "-");
    parent3.Children.Add(new Node("CHILD_3_1", "C", "R", "10"));
    parent3.Children.Add(new Node("CHILD_3_2", "C", "T", "12"));
    parent3.Children.Add(new Node("CHILD_3_3", "C", "H", "14"));

    data = new List<Node> { parent1, parent2, parent3 };
}

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