static void Main(string[] args)
{
User user = new User();
Department dept = new Department();
IUserOperation userOperation = DataAccess.CreateUserOperation();
IDeptOperation deptOperation = DataAccess.CreateDeptOperation();
userOperation.Insert(user);
userOperation.GetUser(3);
deptOperation.Insert(dept);
deptOperation.GetDepartment(4);
}
public static IDeptOperation CreateDeptOperation()
{
IDeptOperation deptOperation = null;
switch (db)
{
case "Sqlserver":
deptOperation = new SqlserverDept();
break;
case "Access":
deptOperation = new AccessDept();
break;
}
return(deptOperation);
}
static void Main(string[] args)
{
//使用抽象工厂模式,可以在工厂中生产多种产品
User user = new User();
Department dept = new Department();
//如果需要更换数据库，只需要修改下面这个改为其他数据库的工厂即可
//缺点是，当增加一个表时，需要增加表类，然后增加相关表操作类，有多少数据库就要增加多少相关表操作类
//再然后就是要修改各个数据库工厂类，在各个工厂中增加生产操作类的方法
IDB db = new SqlServer();
IUserOperation userOperation = db.CreateUserOperation();
IDeptOperation deptOperation = db.CreateDeptOperation();
userOperation.Insert(user);
userOperation.GetUser(1);
deptOperation.Insert(dept);
deptOperation.GetDepartment(2);
Console.ReadKey();
}
