User表和Department表
代码语言：javascript复制 class User
{
private int _id;
public int Id
{
get { return _id; }
set { _id = value; }
}
private string _name;
public string Name
{
get { return _name; }
set { _name = value; }
}
}
class Department
{
private int _id;
public int Id
{
get { return _id; }
set { _id = value; }
}
private string _name;
public string Name
{
get { return _name; }
set { _name = value; }
}
}IUser类（Department类相类似）
代码语言：javascript复制 interface IUser
{
void Insert(User user);
User GetUser(int id);
}
class SqlserverUser : IUser
{
public void Insert(User user)
{
Console.WriteLine("在SQL Server中User表增加一条记录");
}
public User GetUser(int id)
{
Console.WriteLine("在SQL Server中根据ID得到User表的一条记录");
return null;
}
}
class AccessUser : IUser
{
public void Insert(User user)
{
Console.WriteLine("在Access中User表增加一条记录");
}
public User GetUser(int id)
{
Console.WriteLine("在Access中根据ID得到User表的一条记录");
return null;
}
}DataAccess类
代码语言：javascript复制 class DataAccess
{
private static readonly string AssemblyName = "抽象工厂";
//直接写字符串获得db类型
//private static readonly string db = "Sqlserver";
//private static readonly string db = "Access";
//读配置文件获得db类型
private static readonly string db = ConfigurationManager.AppSettings["DB"];
public static IUser CreateUser()
{
string className = AssemblyName "." db "User";
return (IUser)Assembly.Load(AssemblyName).CreateInstance(className);
}
public static IDepartment CreateDepartment()
{
string className = AssemblyName "." db "Department";
return (IDepartment)Assembly.Load(AssemblyName).CreateInstance(className);
}
}App.config配置文件
代码语言：javascript复制<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="DB" value="Sqlserver"/>
</appSettings>
</configuration>客户端代码
代码语言：javascript复制 User user = new User();
IUser iu = DataAccess.CreateUser();
iu.Insert(user);
iu.GetUser(1);
Department dept = new Department();
IDepartment id = DataAccess.CreateDepartment();
id.Insert(dept);
id.GetDepartment(1);
Console.ReadKey();UML图
