关于泛型的一个简单问题

Question

        List<QuestionMain> reQuestionMain = new List<QuestionMain>();
        reQuestionMain= RunProcGetVO(sql,str);
        int n= Convert.ToInt32(reQuestionMain.Count);
        for(int i=0;i<n;i++)
        {
            QuestionChild singleQuestionChild = new QuestionChild();
            singleQuestionChild.PK_Question = reQuestionMain[i].PK_Question.ToString();
            List<QuestionChild> singleQuestionChilds = new QuestionChildDA().RunProcGetTable1(singleQuestionChild);
  
            for (int b = 0; b < singleQuestionChilds.Count; b++)
            {
                singleQuestionChild.Destination = Convert.ToString(singleQuestionChilds[b].Destination);
                singleQuestionChild.Operator = Convert.ToString(singleQuestionChilds[b].Operator);
                singleQuestionChild.PK_Corp = Convert.ToString(singleQuestionChilds[b].PK_Corp);
                singleQuestionChild.PK_Product = Convert.ToString(singleQuestionChilds[b].PK_Product);
                singleQuestionChild.PK_QuesChild = Convert.ToString(singleQuestionChilds[b].PK_QuesChild);
                ...........
               singleQuestionChild.U9 = Convert.ToString(singleQuestionChilds[b].U9);
                singleQuestionChild.U10 = Convert.ToString(singleQuestionChilds[b].U10);
                reQuestionMain[3].QuestionChild.Add(singleQuestionChild);                
            }
        }
        return reQuestionMain;
    }为什么执行完之后List<QuestionMan>的每一条记录里的属性List<QuestinChild>的条数是一样的，我想要的结果是List<QuestinChild>的值是查询出来的结果，查询的结果肯定是不一样的啊？也就是说查询结果是什么，该属性的值就是什么的，帮忙看看！

Answer 1

    public IList<SysMenuEntity> MenuGetALL(string Parameters)
        {
            IList<SysMenuEntity> result = new List<SysMenuEntity>();
            StringBuilder StrSql = new StringBuilder();
            StrSql.AppendFormat("  SELECT * FROM Sys_Menu WHERE MenuName Like '%{0}%' ", Parameters);            using (SqlDataReader SqlDatar = SQLHelper.ExecuteReader(SQLHelper.ConnectionStringLocalTransaction, CommandType.Text, StrSql.ToString()))
            {
                SysMenuEntity MenuEntity;
                while (SqlDatar.Read())
                {
                    MenuEntity = this.SetMenuReader(SqlDatar);
                    result.Add(MenuEntity);
                }
            }
            return result;
        }
        private SysMenuEntity SetMenuReader(SqlDataReader SqlDatar)
        {
            SysMenuEntity MenuEntity = new SysMenuEntity();
            try
            {
                MenuEntity.Id = SqlDatar.GetInt32(0);
                MenuEntity.MenuNo = SqlDatar.GetString(1);
                MenuEntity.MeunName = SqlDatar.GetString(2);
                MenuEntity.BLRoot = SqlDatar.GetBoolean(3);
                MenuEntity.BLSubMenu = SqlDatar.GetBoolean(4);
                MenuEntity.MenuTitle = SqlDatar.GetString(5);
                MenuEntity.MenuIcoPath = SqlDatar.GetString(6);
                MenuEntity.CreateUser = SqlDatar.GetString(8);
            }
            catch
            {
                throw;
            }
            return MenuEntity;
        }

Answer 2

List <QuestionMain> reQuestionMain = new List <QuestionMain>();
reQuestionMain= RunProcGetVO(sql,str); 
int n= Convert.ToInt32(reQuestionMain.Count); 
for(int i=0;i <n;i++) 
{ 
    QuestionChild singleQuestionChild = new QuestionChild(); 
    singleQuestionChild.PK_Question = reQuestionMain[i].PK_Question.ToString(); 
    List <QuestionChild> singleQuestionChilds = new QuestionChildDA().RunProcGetTable1(singleQuestionChild); 
    reQuestionMain[i].QuestionChild.AddRange(singleQuestionChilds); 
} 
return reQuestionMain; 
你这段代码实在是没看明白
singleQuestionChilds已经是泛型了
为什么还每个属性都要赋值给singleQuestionChild
直接添加进reQuestionMain不就得了么

Answer 3

恩，是我的代码太繁琐了！可是为什么我用了您的方法后，就是在执行完reQuestionMain[i].QuestionChild.AddRange(singleQuestionChilds)后，为什么没一条reQuestionMain记录里的QuestionChild都是一样的呢，和我想要的不一样呢，还请指教！