不要使用匿名类var results = from u in ds.Tables[0].AsEnumerable()
                
                      select new Person
                      {
                         
                            ID = u.Field<string>("ID").ToString().Trim(),
                            Name = u.Field<string>("Name").ToString().Trim(),
                            Age = u.Field<string>("Age").ToString().Trim(),
                            City = u.Field<string>("City").ToString().Trim(),                      };