樹形控制項TreeView的序列化

最近自己做了一個小軟體，一個檔案瀏覽器，與windows的資源管理員相比，可以查看檔案內容，而不用外部程式開啟，支援多種檔案格式，以後準備加入基於內容的搜尋（打算用開源的dotLucene組件）。其中需要將樹形控制項序列化，查了很多資料，在codeproject找到一個vb.net寫的，找了一個代碼轉換器轉成了C#,修改了一下，改成了二進位序列化。貼在下面供需要的參考。

原文地址：

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

我修改過的C#源碼：

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

namespace testAll
{
 /// <summary>
 /// TreeView序列化類
 /// </summary>
 public class TreeViewDataAccess
 {
  public TreeViewDataAccess(){}
  
  /// <summary>
  /// TreeViewData
  /// </summary>
  [Serializable()]
  public struct TreeViewData
  {
   public TreeNodeData[] Nodes;

   /// <summary>
   /// 遞迴初始化TreeView資料
   /// </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>
   /// 通過TreeViewData彈出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建構函式
   /// </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>
  /// 載入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>
  /// 儲存TreeView到檔案
  /// </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();

  }
 }

 
}