C# 之 遍历本地文件夹下的所有文件

        /// <summary>
        /// 遍历 rootdir目录下的所有文件
        /// </summary>
        /// <param name="rootdir">目录名称</param>
        /// <returns>该目录下的所有文件</returns>
        public StringCollection GetAllFiles(string rootdir)
        {
            StringCollection result = new StringCollection();
            GetAllFiles(rootdir, result);
            return result;
        }

        /// <summary>
        /// 作为遍历文件夹中的子文件
        /// </summary>
        /// <param name="parentDir">目录名称</param>
        /// <param name="result">该目录下的所有文件</param>
        public void GetAllFiles(string parentDir, StringCollection result)
        {

            //获取目录parentDir下的所有的子文件夹
            //string[] dir = Directory.GetDirectories(parentDir);
            //for (int i = 0; i < dir.Length; i++)
            // GetAllFiles(dir[i], result);

            //获取目录parentDir下的所有的文件，并过滤得到所有的文本文件
            string[] file = Directory.GetFiles(parentDir,".txt");
            for (int i = ; i < file.Length; i++)
            {
                //FileInfo fi = new FileInfo(file[i]);
                //if (fi.Extension.ToLower() == "txt")
                //{
                    result.Add(file[i]);
                //}
            }
        }  

private   void   forFileLength(DirectoryInfo   directory)
{
    DirectoryInfo[]   directorys   =   directory.GetDirectories();
    FileInfo[]   files;
    foreach   (DirectoryInfo   di   in   directorys)
    {
        forFileLength(di);
    }
    files   =   directory.GetFiles();
    foreach(FileInfo   file   in   files)
    {
        string temp = file.DirectoryName.ToString();  //  当前路径件
        string name = file.Name;    // name 文件名
    }
}

     public void FoundFile()
    {
        DirectoryInfo di = new DirectoryInfo(Server.MapPath("~/公司/"+gongsiname));
        DataTable dt = new DataTable();
        dt.Columns.Add("imgurl", typeof(String));
        foreach (FileInfo fi in di.GetFiles())
        {
            DataRow dr = dt.NewRow();
            //dr[0] = Server.MapPath("公司/") + fi.Name;
            dr[] = "~/公司/"+gongsiname+"/"+ fi.Name;
            dt.Rows.Add(dr);

        }

        this.DataList1.DataSource = dt;
        this.DataList1.DataBind();
        //this.GridView1.DataSource = dt;
        //this.GridView1.DataBind();
    }

取出文件名，并绑定到DataList上面

    protected void Page_Load(object sender, EventArgs e)
    {
       string gongsiname=Request["gongsiname"].ToString ();

       DirectoryInfo imagesfile = new DirectoryInfo("G://公司//"+gongsiname);
       DataList1.DataSource = imagesfile.GetFiles("*.jpg");
       DataList1.DataBind();

    }