winform上datagridview 数据绑定的问题

Question

datagridview 的datasource为list<userinfo>,而userinfo实体里面有别的实体(sex)，所以在页面绑定的时候，dataPropertyName="sex.title",结果页面并没有显示，高手快来

Answer 1

dataPropertyName="sex.title"==================dataPropertyName=sex.title;这对吗？？

Answer 2

如果写成dataPropertyName=“sex”，那么就显示这个sex实体信息了，但是我不能显示我指定的title那个属性

Answer 3

我试了n种写法，dataPropertyName=“sex<title>”,dataPropertyName=“sex{title}”...没有一次成功

Answer 4

重点看一下定义类的那两句注释     public class Student
        {
            private int stuId;            public int StuId
            {
                get { return stuId; }
                set { stuId = value; }
            }
            private string stuName;            public string StuName
            {
                get { return stuName; }
                set { stuName = value; }
            }
            private Sex stuSex;            public Sex StuSex
            {
                set { stuSex = value; }//这里设置成只写
            }
            public Student() { }
            public Student(int id, string name, Sex stusex)
            {
                this.StuId = id;
                this.StuName = name;
                this.StuSex = stusex;
            }
            //另外增加一个只读属性 
            public string Sex
            {
                get { return stuSex.StuSex; }
            }
        }
        public class Sex
        {
            private string stuSex;            public string StuSex
            {
                get { return stuSex; }
                set { stuSex = value; }
            }
            public Sex() { }
            public Sex(string sex)
            {
                this.StuSex = sex;
            }
        }
//调用
        Student[] student = new Student[]
            { 
                new Student ( 1, "Hello",new Sex("男") ) ,
                new Student ( 2, "World",new Sex("女"))
            };
//绑定dgv
this.dataGridView1.DataSource = student;