C#删除目录和目录下的所有文件

  /// <summary>
  ///
  /// </summary>
  /// <param name="Fid"></param>
  /// <param name="fname"></param>
  /// <param name="FPath"></param>
  /// <param name="IsDel"></param>
  public void RemoteDownData(string Fid,string fname,string FPath,bool IsDel)
  {
   DirectoryInfo Dir = new DirectoryInfo(FPath);
   if(!Dir.Exists)
    Dir.Create();
   else
   {
    if(IsDel)
    {
     foreach(FileInfo file in Dir.GetFiles())
     {
      file.Delete();
     }
    }
   }
   PbaseUpdate Pbase = new PbaseUpdate();
   DataTable DtCode =Pbase.GetDatetable(null,"select FCODE,FID from DNC_PRODUCTPROGRAM_CODE where fid='"+Fid+"'");
   if(DtCode.Rows.Count<=0)return;
   byte[] buffer=(byte[])DtCode.Rows[0][0];
   FPath = FPath + fname;
   FileStream Fs = File.OpenWrite(FPath);
   Fs.Write(buffer,0,buffer.Length);
   Fs.Close();
   DtCode.Dispose();
  }
  /// <summary>
  ///
  /// </summary>
  /// <param name="FPath"></param>
  public bool  RemoteDelDir(string FPath)
  {
   FileInfo RFile = new FileInfo(FPath);
   if( RFile.Exists)
   {
    return SigleFileDel(FPath);
   }
   else
   {
    DirectoryInfo Dir = new DirectoryInfo(FPath);
    if(!Dir.Exists)return false;
    if(Dir.GetFiles().Length <= 0)
    {
     Dir.Delete();
     return true;
    }
    else
    {
     foreach(FileInfo file in Dir.GetFiles())
     {
      string FilePath = file.FullName;
      if(!SigleFileDel(FilePath))
       return false;
     }
     Dir.Delete();
     return true;
    }
   }
  }
  private bool SigleFileDel(string  FilePath)
  {
   FileInfo file = new FileInfo(FilePath);
   if(file.Exists)
   {
    file.Delete();
    return true;
   }
   else
   {
    return false;
   }
  }
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