1using System;
 2using System.Reflection;//.net反射
 3using System.Configuration;
 4using MessageBoard7.IDAL;//数据层访问统一接口
 5
 6namespace MessageBoard7.DALFactory
 7...{
 8    /**//// <summary>
 9    /// 数据访问工厂，根据web.config中的配置确定访问SQLServer还是Access
10    /// </summary>
11    public class Messages
12    ...{
13        public Messages()
14        ...{
15            //
16            // TODO: 在此处添加构造函数逻辑
17            //
18        }
19        public IMessages Create()
20        ...{
21            //获取程序集名称
22            string AssemblyName = ConfigurationSettings.AppSettings["AssemblyName"];
23            //获取默认构造函数名称
24            string Constructor = ConfigurationSettings.AppSettings["Constructor"];
25            //返回IMessages接口类型对象实例
26            return (IMessages)Assembly.Load(AssemblyName).CreateInstance(Constructor);
27        }
28    }
29}
30