强类型化的PreviousPage

Question

我在App_Code中创建了个C#文件
 public struct RegistrationInformation
    {
        private string firstname;
        public string Firstname
        {
            get { return firstname; }
            set { firstname = value; }
        }
        private string lastname;
        public string Lastname
        {
            get { return lastname; }
            set { lastname = value; }
        }
        private string email;
        public string Email
        {
            get { return email; }
            set { email = value; }
        }
        private string selectedEvent;
        public string SelectedEvent
        {
            get { return selectedEvent; }
            set { selectedEvent = value; }
        }
    }
在Defaulst.aspx.cs中 为啥点不出来？就是调用不了啊？
    public RegistrationInfomation RegistrationInformation
    {
        get
        {
            RegistrationInfomation ri = new RegistrationInfomation();
            ri.
            
        }
    }
请问哪出错了吗？

Answer 1

RegistrationInformation  有命名空间吗？