automapper缺少类型映射配置或不支持的映射。

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 

行动方法：

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

当我从实体获取客户时，我得到了上述错误。 为什么我只是在获取后出现此错误？

Answer 1

看起来您想忽略映射中的Cities，Sectors和PowerSuppliers。

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

我做了这个假设，因为你手动设置它们。 当然，您可以为这些创建映射并自动化它们。