自动映射器：缺少类型映射配置或不支持的映射。

Question

错误

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

操作方法：

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);
}

当我从实体中提取客户时，我收到上述错误。为什么只有在提取后才会出现这个错误？

- AliRıza Adıyahşi

Answer 1

看起来您希望在地图上忽略城市、行业和电力供应商。

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());

我做出了这个假设，因为您是手动设置它们的。当然，您也可以为它们创建映射并进行自动映射。

- dove