获取列表计数属性

Question

我有两个班级：

public class a
{
    public List<b> b { get; set; }

    public c c { get; set; }
}

public class c
{
    public int count { get {  return ?????????? } }
}

我想在班级Count

中返回a.b的{​​{1}}属性

Answer 1

您可以a依赖c并从那里访问b

public class a
{
    public a() {
        b = new List<b>();
        c = new c(this);
    }

    public List<b> b { get; set; }

    public c c { get; set; }
}

public class c
{
    private a _a;
    public c(a _a) { this._a = _a; }

    public int count { get {  return _a.b.Count; } }
}