请问关于面向对像的写法以下哪一种好呢？

[zengzhimin1980]

请问关于面向对像的写法以下哪一种好呢？

数据表如下:

staff表
id name departmentid
1 张三 1
2 李四 2
3 王五 1
...............


departmet表

id department
1 电脑部
2 会计部
3 行政部
............


用面向对像写程序时， 实体类modal 以下写法用哪个好呢?

写法一:
class Staff
{
int id;
public Id
{
get{return id;}
}

string name;
public Name
{
set{name=value;}
get{return name;}
}

int departmentid;
public DepartmetId
{
set{departmentid=value;}
get{return departmentid;}
}

public Staff(int id, string name, int departmentId)
{
this.id=id;
this.name=name;
this.departmentid=departmentid;
}
}

class Department
{
int departmentid;
public DepartmentId
{
get{return departmentid;}
}

string departmentname;
public DepartmentName
{
set{departmentname=value;}
get{return departmentname;}
}


public Staff(int departmentid, string departmentname)
{
this.departmentid=departmentid;
this.departmentname=departmentname;
}
}



写法二:
class Staff
{
int id;
public Id
{
get{return id;}
}

string name;
public Name
{
set{name=value;}
get{return name;}
}

Department departmentinfo;
public DepartmetInfo
{
set{departmentinfo=value;}
get{return departmentinfo;}
}

public Staff(int id, string name, Department departmentinfo)
{
this.id=id;
this.name=name;
this.departmentinfo=departmentinfo;
}
}

class Department
{
int departmentid;
public DepartmentId
{
get{return departmentid;}
}

string departmentname;
public DepartmentName
{
set{departmentname=value;}
get{return departmentname;}
}


public Staff(int departmentid, string departmentname)
{
this.departmentid=departmentid;
this.departmentname=departmentname;
}
}


我的程序是用三层结构写的，在写实体层类库是遇到这样的问题，请教一下各位应该选择写法一还是写法二呢？

[houlinghouling]

没有看出了你这两种写法有什么不同。
你可以按照一个"动软"这些都会自动生成，就那么些就可以。

[娃都会打酱油了]

还是第一种吧，这样就不必一定要定义了Department 对象才能定义Staff 对象

[zengzhimin1980]

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[zengzhimin1980]

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