C#使用WIN32API来遍历文件和目录[2]_安全中国

   private System.Collections.ArrayList myList = new System.Collections.ArrayList();

}//public class FileDirectoryEnumerable : System.Collections.IEnumerable

/// <summary>
/// 文件和目录的遍历器
/// </summary>
/// <remarks>本对象为Win32API函数 FindFirstFile , FindNextFile
/// 和 FindClose 的一个包装
///
/// 以下代码演示使用了 FileDirectoryEnumerator
///
/// FileDirectoryEnumerator e = new FileDirectoryEnumerator();
/// e.SearchPath = @"c:\";
/// e.Reset();
/// e.ReturnStringType = true ;
/// while (e.MoveNext())
/// {
/// System.Console.WriteLine
/// ( e.LastAccessTime.ToString("yyyy-MM-dd HH:mm:ss")
/// + " " + e.FileLength + " \t" + e.Name );
/// }
/// e.Close();
/// System.Console.ReadLine();
///
/// 编写袁永福（ http://www.xdesigner.cn ）2006-12-8</remarks>
public class FileDirectoryEnumerator : System.Collections.IEnumerator
{

   #region 表示对象当前状态的数据和属性 **********************************

   /// <summary>
   /// 当前对象
   /// </summary>
   private object objCurrentObject = null;

   private bool bolIsEmpty = false;
   /// <summary>
   /// 该目录为空
   /// </summary>
   public bool IsEmpty
   {
   get { return bolIsEmpty; }
   }
   private int intSearchedCount = 0;
   /// <summary>
   /// 已找到的对象的个数
   /// </summary>
   public int SearchedCount
   {
   get { return intSearchedCount; }
   }
   private bool bolIsFile = true;
   /// <summary>
   /// 当前对象是否为文件,若为true则当前对象为文件,否则为目录
   /// </summary>
   public bool IsFile
   {
   get { return bolIsFile; }
   }
   private int intLastErrorCode = 0;
   /// <summary>
   /// 最后一次操作的Win32错误代码
   /// </summary>
   public int LastErrorCode
   {
   get { return intLastErrorCode; }
   }
   /// <summary>
   /// 当前对象的名称
   /// </summary>
   public string Name
   {
   get
   {
   if (this.objCurrentObject != null)
   {
   if (objCurrentObject is string)
   return (string)this.objCurrentObject;
   else
   return ((System.IO.FileSystemInfo)this.objCurrentObject).Name;
   }
   return null;
   }
   }
   /// <summary>
   /// 当前对象属性
   /// </summary>
   public System.IO.FileAttributes Attributes
   {
   get { return (System.IO.FileAttributes)myData.dwFileAttributes; }
   }
   /// <summary>
   /// 当前对象创建时间
   /// </summary>
   public System.DateTime CreationTime
   {
   get
   {
   long time = ToLong(myData.ftCreationTime_dwHighDateTime, myData.ftCreationTime_dwLowDateTime);
   System.DateTime dtm = System.DateTime.FromFileTimeUtc(time);
   return dtm.ToLocalTime();
   }
   }
   /// <summary>
   /// 当前对象最后访问时间
   /// </summary>
   public System.DateTime LastAccessTime
   {
   get
   {
   long time = ToLong(myData.ftLastAccessTime_dwHighDateTime, myData.ftLastAccessTime_dwLowDateTime);
   System.DateTime dtm = System.DateTime.FromFileTimeUtc(time);
   return dtm.ToLocalTime();
   }
   }
   /// <summary>
   /// 当前对象最后保存时间
   /// </summary>
   public System.DateTime LastWriteTime
   {
   get
   {
   long time = ToLong(myData.ftLastWriteTime_dwHighDateTime, myData.ftLastWriteTime_dwLowDateTime);
   System.DateTime dtm = System.DateTime.FromFileTimeUtc(time);
   return dtm.ToLocalTime();
   }
   }
   /// <summary>
   /// 当前文件长度,若为当前对象为文件则返回文件长度,若当前对象为目录则返回0
   /// </summary>
   public long FileLength
   {
   get
   {
   if (this.bolIsFile)
   return ToLong(myData.nFileSizeHigh, myData.nFileSizeLow);
   else
   return 0;
   }
   }

   #endregion