List wpf数据网格集项源列表<；对象>；

我对wpf中的DataGrid有问题

这是一门课：

class Superviser
    {
        public long Id = 0;
        public string name = "";
        public string father = "";
        public string code = "";
    }

这是一个函数，用来建立这个类对象的列表

public List<Superviser> allSuperviser()
        {
            return db.tbPersons.Where(i => i.level == StaticsObject.isSuperviser).Select(x => new Superviser
            {
                Id = x.Id,
                name = x.firstName,
                father = x.father,
                code = x.code,
            }).ToList();
        }

但当运行程序datagrid为空时

提示：列表不是空的

问题在哪里

---

如何在DataGrid上显示此列表？你好，agian，我解决了它

我换了一个班：

class Superviser
{
    public long Id { get; set; }
    public string name { get; set; }
    public string father { get; set; }
    public string code { get; set; }
    public Superviser() { }

    public Superviser(long Id, string name, string father, string code)
    {
        this.Id = Id;
        this.name = name;
        this.father = father;
        this.code = code;
    }
}

并将功能更改为：

public List<Superviser> allSuperviser()
        {
            return db.tbPersons.Where(i => i.level == StaticsObject.isSuperviser).Select(x => new Superviser { Id = x.Id, name = x.firstName + " " + x.lastName, father = x.father, code = x.code }).ToList();
        }

public List allSuperviser（）
{
返回db.tbPersons.Where（i=>i.level==StaticsObject.isSuperviser）。选择（x=>newsuperviser{Id=x.Id，name=x.firstName+“”+x.lastName，father=x.father，code=x.code}）。ToList（）；
}

问题已经解决：）

public List<Superviser> allSuperviser()
        {
            return db.tbPersons.Where(i => i.level == StaticsObject.isSuperviser).Select(x => new Superviser { Id = x.Id, name = x.firstName + " " + x.lastName, father = x.father, code = x.code }).ToList();
        }