如何在c#中实施师生关系？

我想实现一个系统，它代表了课堂与学生的关系。我想施加一个限制，每个教室可以有任意数量的学生，但一个学生只能在一个教室

我创建了两个类-教室和学生。我已经在课堂上创建了一个列表。我如何确保没有人可以在两个课堂上插入同一个学生。

在C#中，给定一个

IEnumerable教室

，其中

教室

有一个属性

学生

，即

IEnumerable

---

我希望这是你的经验：

教室

public class ClassRoom
{
    private List<Student> students = new List<Student>();

    public bool Contains(Student student)
    {
        return this.students.Contains(student);
    }

    public void Add(Student student)
    {
        if (!Contains(student))
            this.students.Add(student);
        student.StudentClassRoom = this;
    }

    public void Remove(Student student)
    {
        // if this contains, remove it anyway...
        if(Contains(student))
            this.students.Remove(student);

        // but do not set ClassRoom of student if she/he does not sit in this.
        if (student.StudentClassRoom != this)
            return;

        student.StudentClassRoom = null;
    }
}

---

通过检查所有教室以确保学生尚未被插入。如果有两个子类classroom1和classroom2，如何迭代所有对象？如何获取所有教室对象？请参阅我的答案，其中classroom1和classroom2将添加到教室对象列表中。我的回答是否有帮助？如果是的话，你能标为接受吗？

public class ClassRoom
{
    private List<Student> students = new List<Student>();

    public bool Contains(Student student)
    {
        return this.students.Contains(student);
    }

    public void Add(Student student)
    {
        if (!Contains(student))
            this.students.Add(student);
        student.StudentClassRoom = this;
    }

    public void Remove(Student student)
    {
        // if this contains, remove it anyway...
        if(Contains(student))
            this.students.Remove(student);

        // but do not set ClassRoom of student if she/he does not sit in this.
        if (student.StudentClassRoom != this)
            return;

        student.StudentClassRoom = null;
    }
}

public class Student
{
    private ClassRoom stdClsRoom;
    public ClassRoom StudentClassRoom
    {
        get { return this.stdClsRoom; }
        set
        {
            if (value == this.stdClsRoom) //from null to null; from same to same;
                return;                   //do nothing

            if (this.stdClsRoom != null)  //if it set from something
            {
                ClassRoom original = this.stdClsRoom;
                this.stdClsRoom = null;  // set field to null to avoid stackoverflow
                original.Remove(this);   // remove from original
            }

            this.stdClsRoom = value;    // set field

            if (value != null)          //if it set to something
                value.Add(this);        // add to new
        }
    }
}