摘要：
using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;using System.IO;public partial class _Default : System.Web.UI.Page{protec 阅读全文
摘要：
asp.net判断服务器上的目录或文件是否存在！（实例）// ======================================================= 【判断文件是否存在】[csharp]view plaincopyusingSystem.IO;//还需要命名空间，别忘了[csharp]view plaincopyif(System.IO.File.Exists("c:\\aaa.txt"))//注意双引号路径应为双斜杠{//##########有aaa.txt文件！}// ======================================= 阅读全文