作者：未知 来源：月光软件站 加入时间：2005-5-13　月光软件站

最近自己做了一个小软件，一个文件浏览器，与windows的资源管理器相比，可以查看文件内容，而不用外部程序打开，支持多种文件格式，以后准备加入基于内容的搜索（打算用开源的dotLucene组件）。其中需要将树形控件序列化，查了很多资料，在codeproject找到一个vb.net写的，找了一个代码转换器转成了C#,修改了一下，改成了二进制序列化。贴在下面供需要的参考。

原文地址：

http://www.codeproject.com/vb/net/TreeViewDataAccess.asp

我修改过的C#源码：

using System;
using System.IO;
using System.Windows.Forms;
using System.Runtime.Serialization.Formatters.Binary;

namespace testAll
{
 /// <summary>
 /// TreeView串行化类
 /// </summary>
 public class TreeViewDataAccess
 {
  public TreeViewDataAccess(){}
  
  /// <summary>
  /// TreeViewData
  /// </summary>
  [Serializable()]
  public struct TreeViewData
  {
   public TreeNodeData[] Nodes;

   /// <summary>
   /// 递归初始化TreeView数据
   /// </summary>
   /// <param name="treeview"></param>
   public TreeViewData(TreeView treeview)
   {
    Nodes = new TreeNodeData[treeview.Nodes.Count];
    if (treeview.Nodes.Count == 0)
    {
     return;
    }
    for (int i = 0; i <= treeview.Nodes.Count - 1; i++)
    {
     Nodes[i] = new TreeNodeData(treeview.Nodes[i]);
    }
   }

   /// <summary>
   /// 通过TreeViewData弹出TreeView
   /// </summary>
   /// <param name="treeview"></param>
   public void PopulateTree(TreeView treeview)
   {
    if (this.Nodes == null || this.Nodes.Length == 0)
    {
     return;
    }
    treeview.BeginUpdate();
    for (int i = 0; i <= this.Nodes.Length - 1; i++)
    {
     treeview.Nodes.Add(this.Nodes[i].ToTreeNode());
    }
    treeview.EndUpdate();
   }
  }

  /// <summary>
  /// TreeNodeData
  /// </summary>
  [Serializable()]
  public struct TreeNodeData
  {
   public string Text;
   public int ImageIndex;
   public int SelectedImageIndex;
   public bool Checked;
   public bool Expanded;
   public object Tag;
   public TreeNodeData[] Nodes;

   /// <summary>
   /// TreeNode构造函数
   /// </summary>
   /// <param name="node"></param>
   public TreeNodeData(TreeNode node)
   {
    this.Text = node.Text;
    this.ImageIndex = node.ImageIndex;
    this.SelectedImageIndex = node.SelectedImageIndex;
    this.Checked = node.Checked;
    this.Expanded = node.IsExpanded;
    this.Nodes = new TreeNodeData[node.Nodes.Count];

    if ((!(node.Tag == null)) && node.Tag.GetType().IsSerializable)
    {
     this.Tag = node.Tag;
    }
    else
    {
     this.Tag = null;
    }
    if (node.Nodes.Count == 0)
    {
     return;
    }
    for (int i = 0; i <= node.Nodes.Count - 1; i++)
    {
     Nodes[i] = new TreeNodeData(node.Nodes[i]);
    }
   }

   /// <summary>
   /// TreeNodeData返回TreeNode
   /// </summary>
   /// <returns></returns>
   public TreeNode ToTreeNode()
   {
    TreeNode ToTreeNode = new TreeNode(this.Text, this.ImageIndex, this.SelectedImageIndex);
    ToTreeNode.Checked = this.Checked;
    ToTreeNode.Tag = this.Tag;
    if (this.Expanded)
    {
     ToTreeNode.Expand();
    }
    if (this.Nodes == null && this.Nodes.Length == 0)
    {
     return null;
    }
    if(ToTreeNode != null && this.Nodes.Length == 0)
    {
     return ToTreeNode;
    }
    for (int i = 0; i <= this.Nodes.Length - 1; i++)
    {
     ToTreeNode.Nodes.Add(this.Nodes[i].ToTreeNode());
    }
    return ToTreeNode;
   }
  }
  /// <summary>
  /// 加载TreeView
  /// </summary>
  /// <param name="treeView"></param>
  /// <param name="path"></param>
  public static void LoadTreeViewData(TreeView treeView, string path)
  {

   BinaryFormatter ser = new BinaryFormatter();
   Stream file = new FileStream(path,FileMode.Open,FileAccess.Read,FileShare.Read);
   TreeViewData treeData = ((TreeViewData)(ser.Deserialize(file)));
   treeData.PopulateTree(treeView);
   file.Close();

  }

  /// <summary>
  /// 保存TreeView到文件
  /// </summary>
  /// <param name="treeView"></param>
  /// <param name="path"></param>
  public static void SaveTreeViewData(TreeView treeView, string path)
  {
   BinaryFormatter ser = new BinaryFormatter();
   Stream file = new FileStream(path,FileMode.Create);
   ser.Serialize(file,new TreeViewData(treeView));
   file.Close();

  }
 }

 
}

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