protected void ReadFile()     //讀取文件夾，文件 
    { 
        string savePath = @"common"; 
        StringBuilder outstring = new StringBuilder(); 
        string absSavePath = Server.MapPath(savePath); 
        string[] Directorys = Directory.GetDirectories(absSavePath + @"/" + Page.User.Identity.Name); 
        //for (int i = 0; i < Directorys.Length; i++) 
        //{ 
        //    Response.Write(Directorys[i] + " <br/ >"); 
        //} 
        //Response.Write("Directorys count：" + Directorys.Length + "個  <br/ >--------- <br >"); 
        string[] Files = Directory.GetFiles(absSavePath + @"" + Page.User.Identity.Name, "*"); 
        outstring.Append("<ul>"); 
        for (int i = 0; i < Files.Length; i++) 
        { 
            if (Path.GetFileName(Files[i]) != "Thumbs.db") 
            { 
                outstring.Append("<li><img src=/"common/" + Path.GetFileName(Files[i]) + "/" style=/"width:100px;height:100px;/" /><br/><input type=/"checkbox/" value=/"common/" + Path.GetFileName(Files[i]) + "/" name=/"picname/" onclick=/"getpicid();/" id=/"imgid" + i.ToString() + "/" /><label for=/"imgid" + i.ToString() + "/">" + Path.GetFileName(Files[i]) + "</label></li>"); 
            } 
        } 
        outstring.Append("</ul>"); 
        Response.Write(outstring.ToString()); 
    }

 

//刪除文件 
        string[] strpicname = Request["imgids"].Split(new char[] { ',' }); 
        for (int i = 0; i < strpicname.Length; i++) 
        { 
            File.Delete(Server.MapPath(strpicname[i].ToString())); 
        } 

//循環遍歷復選框 
<script language="javascript" type="text/javascript" defer="defer"> 
    var imgnum = document.getElementsByTagName("input"); 
    var imgids = ""; 
    function getpicid() 
    { 
        document.getElementById("hidimgid").value = ""; 
        for (var i=0;i<imgnum.length;i++) 
        { 
            if ( imgnum[i].type == "checkbox" && imgnum[i].name == "picname" && imgnum[i].checked) 
            { 
                imgids += imgids == "" ? imgnum[i].value : "," + imgnum[i].value; 
            } 
        } 
        document.getElementById("hidimgid").value = imgids; 
    } 
    </script>