使用反射创建对象

using System.Reflection;
namespace Factory
{public class DALFactory{static DALFactory(){Assembly assembly &＃61; Assembly.Load(StaticConstant.DALDllName);DALType &＃61; assembly.GetType(Constant.DALTypeName);}private static Type DALType &＃61; null;public static IBaseDAL CreateInstance(){return (IBaseDAL)Activator.CreateInstance(DALType);}}
}

private static string DALTypeDll &＃61; ConfigurationManager.AppSettings["DALTypeDll"];public static string DALDllName &＃61; DALTypeDll.Split(&＃39;,&＃39;)[1];public static string DALTypeName &＃61; DALTypeDll.Split(&＃39;,&＃39;)[0];

"DALTypeDll" value&＃61;"程序集.BaseDAL,程序集"/>