本例中获取的是所有的晚辈！首先定义家庭成员类：
public class FamilyMember { /// <summary> /// 身份 /// </summary> public string identity { get; set; } public int level { get; set; } /// <summary> /// 父亲 /// </summary> public string father { get; set; } }
然后，定义递归方法：
/// <summary> /// 递归获取晚辈 /// </summary> /// <param name="members"></param> /// <param name="m"></param> /// <returns></returns> public static List<FamilyMember> GetYoungers(List<FamilyMember> members, FamilyMember m) { var result = new List<FamilyMember>(); //获取该员工的直属下级 var subordinate = members.Where(e => e.father == m.identity).ToList(); //如果存在直属下级 if (subordinate != null) { result.AddRange(subordinate); foreach (var subo in subordinate) { result.AddRange(GetYoungers(members, subo)); } } return result; }
方法解释：
首先，既然是递归，肯定是自己调用自己；
然后，在方法体内部：
既然要获取所有的下属（晚辈），首先要获取自己的直属下属，并将结果存入“下属”集合中；
然后通过递归，获取 “直属下属的直属下属”，同样存入“下属”集合中；
最后，返回“下属”集合。
递归测试：
/// <summary> /// 测试递归 /// </summary> public static void CheckRecursion() { List<FamilyMember> list = new List<FamilyMember> { new FamilyMember{ identity = "үү", level = 1, father = ""}, new FamilyMember{ identity = "爸爸", level = 2, father = "үү"}, new FamilyMember{ identity = "叔叔", level = 2, father = "үү"}, new FamilyMember{ identity = "自己", level = 3, father = "爸爸"}, new FamilyMember{ identity = "弟弟", level = 3, father = "爸爸"}, new FamilyMember{ identity = "堂兄", level = 3, father = "叔叔"}, new FamilyMember{ identity = "堂弟", level = 3, father = "叔叔"}, new FamilyMember{ identity = "儿子", level = 4, father = "自己"}, new FamilyMember{ identity = "女儿", level = 4, father = "自己"}, new FamilyMember{ identity = "侄子", level = 4, father = "弟弟"}, new FamilyMember{ identity = "ֶŮ", level = 4, father = "弟弟"} }; var self = new FamilyMember { identity = "үү", level = 1, father = "" }; var youngers = GetYoungers(list, self).OrderBy(p => p.level).ToList(); if(youngers != null) { foreach(var p in youngers) { Console.WriteLine(p.identity); } } }
调用该方法即可查看效果：
来源：博客园
作者：遇见未来
链接：https://www.cnblogs.com/zhangchaoran/p/11592772.html