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    <p>Just make a class out of it.</p> <p><strong>UPDATED:</strong></p> <pre><code>class TreeNode : IEnumerable&lt;TreeNode&gt; { private readonly Dictionary&lt;string, TreeNode&gt; _children = new Dictionary&lt;string, TreeNode&gt;(); public readonly string ID; public TreeNode Parent { get; private set; } public TreeNode(string id) { this.ID = id; } public TreeNode GetChild(string id) { return this._children[id]; } public void Add(TreeNode item) { if (item.Parent != null) { item.Parent._children.Remove(item.ID); } item.Parent = this; this._children.Add(item.ID, item); } public IEnumerator&lt;TreeNode&gt; GetEnumerator() { return this._children.Values.GetEnumerator(); } IEnumerator IEnumerable.GetEnumerator() { return this.GetEnumerator(); } public int Count { get { return this._children.Count; } } } </code></pre> <p>Usage will be fairly simple to statically define:</p> <pre><code>var tree = new TreeNode("Root") { new TreeNode("Category 1") { new TreeNode("Item 1"), new TreeNode("Item 2"), new TreeNode("Item 3"), }, new TreeNode("Category 2") { new TreeNode("Item 1"), new TreeNode("Item 2"), new TreeNode("Item 3"), new TreeNode("Item 4"), } }; </code></pre> <p><strong>Edit</strong></p> <p>Some more functionality for even easier creation...</p> <pre><code>public static TreeNode BuildTree(string tree) { var lines = tree.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries); var result = new TreeNode("TreeRoot"); var list = new List&lt;TreeNode&gt; { result }; foreach (var line in lines) { var trimmedLine = line.Trim(); var indent = line.Length - trimmedLine.Length; var child = new TreeNode(trimmedLine); list[indent].Add(child); if (indent + 1 &lt; list.Count) { list[indent + 1] = child; } else { list.Add(child); } } return result; } public static string BuildString(TreeNode tree) { var sb = new StringBuilder(); BuildString(sb, tree, 0); return sb.ToString(); } private static void BuildString(StringBuilder sb, TreeNode node, int depth) { sb.AppendLine(node.ID.PadLeft(node.ID.Length + depth)); foreach (var child in node) { BuildString(sb, child, depth + 1); } } </code></pre> <p><br> <strong>Usage:</strong></p> <pre><code>var tree = TreeNode.BuildTree(@" Cat1 Sub1 Item1 Item2 Item3 Sub2 Item1 Item2 Cat2 Sub1 Sub2 Item1 Item2 Sub3 Item1 Cat3 Cat4"); </code></pre>
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    1. POBuild a simple, high performance Tree Data Structure in c#
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    1. USMarcus Mangelsdorf
    1. USSimpleVar
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      1. VTUpMod
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    1. COThis is what I am looking for, very neat.
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      1. USEric Yin
    2. COI think it's not necessary to implement `ICollection<TreeNode>` here. Just `IEnumerable<TreeNode>` and an `Add()` method should be enough.
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      1. USsvick
    3. CO@svick Thanks for the tip! Edited.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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