C#遍历文件夹及其子目录的完整实现方法

本文实例讲述了c#遍历文件夹及其子目录的完整实现方法。分享给大家供大家参考，具体如下：

using system;
using system.collections;
using system.collections.generic;
using system.io;
using system.security.accesscontrol;
using system.text;
namespace consoleapplication1
{
  class program
  {
    static void main(string[] args)
    {
      console.writeline("stt");
      string str = @"e:\";
      if (!str.endswith("\\"))
      {
        str += "\\";
      }
      ilist<fileinfo> lst = getfiles(str);
      if (!directory.exists(str))
      {
        try
        {
          directory.createdirectory(str);
        }
        catch(exception e)
        {
          console.writeline(e.message);
          console.readkey();
          return;
        }
      }
      if (file.exists(str + "test.txt"))
      {
        file.delete(str + "test.txt");
      }
      fileinfo file = new fileinfo(str + "test.txt");
      if (!file.directory.exists)
      {
        directory.createdirectory(file.directoryname);
      }
      using (streamwriter outfilewriter = new streamwriter(str + "test.txt", false, encoding.utf8))
      {
        stringbuilder sb = new stringbuilder();
        foreach (fileinfo item in lst)
        {
          sb.append("\"");
          sb.append(item.fullname);
          sb.append("\"");
          sb.append(",");
          sb.append("\r\n");
        }
        sb.remove(sb.length - 2, 2);
        outfilewriter.writeline(sb.tostring());
        outfilewriter.flush();
        outfilewriter.close();
      }
      console.writeline("end");
      console.readkey();
    }
    private static void getdirectorys(string strpath, ref list<string> lstdirect)
    {
      directoryinfo difliles = new directoryinfo(strpath);
      directoryinfo[] diarr = difliles.getdirectories();
      //directorysecurity directorysecurity = null;
      foreach (directoryinfo di in diarr)
      {
        try
        {
          //directorysecurity = new directorysecurity(di.fullname, accesscontrolsections.access);
          //if (!directorysecurity.areaccessrulesprotected)
          //{
          lstdirect.add(di.fullname);
          getdirectorys(di.fullname, ref lstdirect);
          //}
        }
        catch
        {
          continue;
        }
      }
    }
    /// <summary>
    /// 遍历当前目录及子目录
    /// </summary>
    /// <param name="strpath">文件路径</param>
    /// <returns>所有文件</returns>
    private static ilist<fileinfo> getfiles(string strpath)
    {
      list<fileinfo> lstfiles = new list<fileinfo>();
      list<string> lstdirect = new list<string>();
      lstdirect.add(strpath);
      directoryinfo difliles = null;
      getdirectorys(strpath, ref lstdirect);
      foreach (string str in lstdirect)
      {
        try
        {
          difliles = new directoryinfo(str);
          lstfiles.addrange(difliles.getfiles());
        }
        catch
        {
          continue;
        }
      }
      return lstfiles;
    }
  }
}

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希望本文所述对大家c#程序设计有所帮助。