我在 MVC 5 中使用 AutoMapper 4.1.1,然后使用它将实体从 EF6(具有任何虚拟且无延迟加载的纯 Poco)映射到 viewModel。我遇到了一个奇怪的问题,AutoMapper 可以正确翻译它,但在其他情况下却失败了。
Dto.Person
{
public int PersonId { get; set; }
public string Name { get; set; }
public string Address { get; set; }
public string Phone { get; set; }
}
ViewModel.PersonDetailViewModel
{
public int PersonId { get; set; }
public string Name { get; set; }
public string Address { get; set; }
public string Phone { get; set; }
}
public class PagedPersons
{
public int TotalNumberOfRecords { get; set; }
public IEnumerable<Person> ListOfPersons { get; set; }
}
获取人员的函数
public IEnumerable<Person> GetAllPersons_NOPaging()
{
IEnumerable<Person> persons = new List<Person>();
persons = GetFromdatabase();
return persons;
}
public PagedPersons GetAllPersons_WithPaging()
{
int totalNumberOfRecords = 0;
IEnumerable<Person> = GetFromDatabase();
return new PagedPersons { TotalNumberOfRecords = totalNumberOfRecords, ListOfPersons = listofPersons };
}
控制器
var pagedPerson = GetAllPersons_WithPaging();
var persons = GetAllPersons_NOPaging();
AutoMapper.Mapper.CreateMap<Person, PersonDetailViewModel>();
// THROWS AN ERROR
var viewModel_1 = AutoMapper.Mapper.Map<IEnumerable<Person>, IEnumerable<PersonDetailViewModel>>(pagedPersons.ListOfPersons);
// does NOT throw error
var viewModel_2 = AutoMapper.Mapper.Map<IEnumerable<Person>, IEnumerable<PersonDetailViewModel>>(persons);
所以,我不明白我做错了什么,因为 AutoMapper 能够在 viewmodel_2 的情况下正确映射,但在 viewModel_1 上抛出以下错误。
缺少类型映射配置或不支持的映射。
映射类型:Person -> PersonDetailViewModel MyProject.Dto.Person -> MyProject.Website.ViewModels.PersonDetailViewModel
目标路径:IEnumerable`1[0]
源值:MyProject.Dto.Person