提取目录下的文件

提取directoryPath目录下的所有文件.包括该目录下的文件，以及该目录下的子目录下的文件，等。
其中 this.tableArr 为ArrayList, DynamicTable  为一detail类.

    /***提取文件***/#region /***提取文件***/
        public void GetDrive(string  directoryPath)
        {
            try
            {
                DirectoryInfo info = new DirectoryInfo(directoryPath); 
                if (info.Exists)
                {
                    //提取文件
                    FillFileList(info); 
                    //循环提取子目录下的所有文件
                    GetDirectories(info.GetDirectories());
                }
            }
            catch (Exception err)
            {
                MessageBox.Show(this,err.Message.ToString(),"提取目录",MessageBoxButtons.OK,MessageBoxIcon.Information);
            }
        
        }


        /**//// <summary>
        /// 循环提取子目录下的所有文件
        /// </summary>
        /// <param name="subDirs">DirectoryInfo[]</param>
        private void GetDirectories(DirectoryInfo[] subDirs)
        {

            DirectoryInfo[] subSubDirs;
            try
            {
                foreach (DirectoryInfo subDir in subDirs)
                {
                    FillFileList(subDir);

                    subSubDirs = subDir.GetDirectories();
                    if (subSubDirs.Length != 0)
                    {
                        GetDirectories(subSubDirs);
                    }
                }
            }
            catch (Exception err)
            {
                MessageBox.Show(this,err.Message.ToString(),"提取子目录",MessageBoxButtons.OK,MessageBoxIcon.Information);
            }
            
        }

        /**//// <summary>
        /// 根据DirectoryInfo对象填充文件列表
        /// </summary>
        /// <param name="dirObj"></param>
        /// <returns></returns>
        private bool FillFileList(DirectoryInfo dirObj)
        {
            if(dirObj == null)
                return false;
    
            FileInfo[] files;
            try
            {
                files = dirObj.GetFiles();
            }
            catch(IOException ex)
            {
                MessageBox.Show("请将磁盘或光盘插入驱动器"+dirObj.Name+"中。系统提示："+ex.Message);
                return false;
            }
            catch(Exception err)
            {
                MessageBox.Show(this,err.Message.ToString(),"提取文件",MessageBoxButtons.OK,MessageBoxIcon.Information);
                return false;
            }
 
            try
            {

                foreach(FileInfo tmpfile in files)
                {
                    arrCount++;

                    DynamicTable dtClass=new DynamicTable();
                    dtClass.ID=arrCount;
                    dtClass.FileName=tmpfile.Name;
                 
                    string  fullPath=tmpfile.FullName;
                    fullPath=fullPath.Trim();
                    //提取相对路径
                    dtClass.RelativePath=GetRelativePath(fullPath);
    ……                        
                    this.tableArr.Add(dtClass);
            
                }
                return true; 
            }
            catch (Exception err)
            {
                MessageBox.Show(this,err.Message.ToString(),"构造表格类",MessageBoxButtons.OK,MessageBoxIcon.Information);
                return false;
            }
        }

        #endregion