Little Registry Cleaner/Common Tools/TreeViewAdv/Tree/TreeNodeAdv.cs

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using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Runtime.Serialization;
using System.Security.Permissions;

namespace Common_Tools.TreeViewAdv.Tree
{
	[Serializable]
	public sealed class TreeNodeAdv : ISerializable
	{
		#region NodeCollection
		private class NodeCollection : Collection<TreeNodeAdv>
		{
			private TreeNodeAdv _owner;

			public NodeCollection(TreeNodeAdv owner)
			{
				_owner = owner;
			}

			protected override void ClearItems()
			{
				while (this.Count != 0)
					this.RemoveAt(this.Count - 1);
			}

			protected override void InsertItem(int index, TreeNodeAdv item)
			{
				if (item == null)
					throw new ArgumentNullException("item");

				if (item.Parent != _owner)
				{
					if (item.Parent != null)
						item.Parent.Nodes.Remove(item);
					item._parent = _owner;
					item._index = index;
					for (int i = index; i < Count; i++)
						this[i]._index++;
					base.InsertItem(index, item);
				}

				if (_owner.Tree != null && _owner.Tree.Model == null)
				{
					_owner.Tree.SmartFullUpdate();
				}
			}

			protected override void RemoveItem(int index)
			{
				TreeNodeAdv item = this[index];
				item._parent = null;
				item._index = -1;
				for (int i = index + 1; i < Count; i++)
					this[i]._index--;
				base.RemoveItem(index);

				if (_owner.Tree != null && _owner.Tree.Model == null)
				{