相关疑难解决方法(0)

我一直在玩这个,因为它看起来感觉很像记录的帖子/用户示例,但它略有不同,并不适合我.

假设以下简化设置(联系人有多个电话号码):

public class Contact
{
    public int ContactID { get; set; }
    public string ContactName { get; set; }
    public IEnumerable<Phone> Phones { get; set; }
}

public class Phone
{
    public int PhoneId { get; set; }
    public int ContactID { get; set; } // foreign key
    public string Number { get; set; }
    public string Type { get; set; }
    public bool IsActive { get; set; }
}

我希望最终能够返回一个与多个Phone对象联系的东西.这样,如果我有2个联系人,每个联系人有2个电话,我的SQL将返回一个连接,作为结果集共4行.然后Dapper将弹出2个接触对象,每个接触对象有两部手机.

这是存储过程中的SQL:

SELECT *
FROM Contacts
    LEFT …

我已经编写了这个代码来实现一对多的关系,但它不起作用:

using (var connection = new SqlConnection(connectionString))
{
   connection.Open();

   IEnumerable<Store> stores = connection.Query<Store, IEnumerable<Employee>, Store>
                        (@"Select Stores.Id as StoreId, Stores.Name, 
                                  Employees.Id as EmployeeId, Employees.FirstName,
                                  Employees.LastName, Employees.StoreId 
                           from Store Stores 
                           INNER JOIN Employee Employees ON Stores.Id = Employees.StoreId",
                        (a, s) => { a.Employees = s; return a; }, 
                        splitOn: "EmployeeId");

   foreach (var store in stores)
   {
       Console.WriteLine(store.Name);
   }
}

任何人都可以发现错误吗？

编辑:

这些是我的实体:

public class Product
{
    public int Id { get; set; }
    public string Name { get; set; }
    public …