https://blog.youkuaiyun.com/LRG315zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/LRG315/article/details/2057737https://blog.youkuaiyun.com/LRG315/article/details/2057737LRG315Tue, 22 Jan 2008 00:12:00 +0800卸载、安装 、重装，修复.....反反复复，搞得鸡犬不宁。。。。。。最后，终于在网海里捞到：MSDN安装盘里一个DExplore 文件夹，这个文件夹里就一个DExplore.exe 安]]>https://blog.youkuaiyun.com/LRG315/article/details/2042668https://blog.youkuaiyun.com/LRG315/article/details/2042668LRG315Mon, 14 Jan 2008 00:49:00 +0800https://blog.youkuaiyun.com/LRG315/article/details/2034695https://blog.youkuaiyun.com/LRG315/article/details/2034695LRG315Fri, 11 Jan 2008 00:38:00 +0800https://blog.youkuaiyun.com/LRG315/article/details/2029558https://blog.youkuaiyun.com/LRG315/article/details/2029558LRG315Tue, 08 Jan 2008 00:49:00 +0800https://blog.youkuaiyun.com/LRG315/article/details/2027576https://blog.youkuaiyun.com/LRG315/article/details/2027576LRG315Sun, 06 Jan 2008 17:07:00 +0800https://blog.youkuaiyun.com/LRG315/article/details/2027524https://blog.youkuaiyun.com/LRG315/article/details/2027524LRG315Sun, 06 Jan 2008 16:07:00 +0800 UserList=new ListUserInfo>();//创建用户类实例User user =new User();//读取用户信息UserList   = user.GetUser();/]]>https://blog.youkuaiyun.com/LRG315/article/details/2027086https://blog.youkuaiyun.com/LRG315/article/details/2027086LRG315Sat, 05 Jan 2008 20:31:00 +0800string异：当object为null时，则：　　1．.ToString()：如果object为null，会抛出NullReferenceException异常　　2．Convert.ToString()：不会抛出NullReferenceException异常，而是返]]>https://blog.youkuaiyun.com/LRG315/article/details/2026992https://blog.youkuaiyun.com/LRG315/article/details/2026992LRG315Sat, 05 Jan 2008 18:44:00 +0800    add key="DAL" value="SqlDAL"/>  appSettings>然后，在抽象工厂里读取配置信息并创建类的实例，如：    private static readonly string Path = Configuratio]]>