automapper Missing type map configuration or unsupported mapping.?

问题:

ERROR

Missing type map configuration or unsupported mapping.  Mapping types: Cities_C391BA93C06F35100522AFBFA8F6BF3823972C9E97D5A49783829A4E90A03F00 -> IEnumerable`1 System.Data.Entity.DynamicProxies.Cities_C391BA93C06F35100522AFBFA8F6BF3823972C9E97D5A49783829A4E90A03F00 -> System.Collections.Generic.IEnumerable`1[[OsosPlus2.Core.DataAccess.Cities, OsosPlus2.Core, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]  Destination path: CustomerViewModel.Cities.Cities  Source value: System.Data.Entity.DynamicProxies.Cities_C391BA93C06F35100522AFBFA8F6BF3823972C9E97D5A49783829A4E90A03F00 

Action Method:

public ActionResult _EditCustomer(int CustomerId) {     Customers customer = entity.Customers.FirstOrDefault(x => x.sno == CustomerId);     CustomerViewModel customerViewModel = new CustomerViewModel();     customerViewModel = AutoMapper.Mapper.Map<Customers, CustomerViewModel>(customer);      customerViewModel.Sectors = entity.Sectors;     customerViewModel.Cities = entity.Cities;     customerViewModel.PowerSuppliers = entity.PowerSuppliers;      return PartialView(customerViewModel); } 

When I fetch customer from entity, I get above error. Why only I get this error after fetching?

回答1:

It looks like you want to ignore Cities, Sectors and PowerSuppliers from your mapping.

Mapper.CreateMap<Customers, CustomerViewModel>()                 .ForMember(c => c.Sectors, option => option.Ignore())                 .ForMember(c => c.Cities , option => option.Ignore())                 .ForMember(c => c.PowerSuppliers , option => option.Ignore()); 

I made this assumption since you are setting them manually. Of course you could create mappings for these and automap them as well.

文章来源: automapper Missing type map configuration or unsupported mapping.?