Question

 public class ClientViewModel
    {
        [Required(ErrorMessage = "The Client Code field is required.")]  
        public string ClientCode { get; set; }
        [Required(ErrorMessage = "The Company Legal Name field is required.")]  
        public string CompanyLegalName { get; set; }
        public string Notes { get; set; }
        public string Address { get; set; }
        public string City { get; set; }
        public string State { get; set; }
        public string Zip { get; set; }
        public Nullable<DateTime> ScheduledDate { get; set; }
        public Nullable<decimal> AmountDiscount { get; set; }
    }

    public class Client
    {
        public string ClientCode { get; set; }   
        public string CompanyLegalName { get; set; }
        public string Notes { get; set; }
        public string Address { get; set; }
        public string City { get; set; }
        public string State { get; set; }
        public string Zip { get; set; }
        public Nullable<DateTime> ScheduledDate { get; set; }
        public Nullable<decimal> AmountDiscount { get; set; }
    }

编辑：

异常详细信息：AutoMapper.AutoMapperMappingException：缺少类型   地图配置或不支持的映射。

映射类型：客户端 - ＆gt; ClientViewModel myapp.Models.Client - ＆gt;   myapp.Models.ClientViewModel

目标路径：ClientViewModel

来源价值：myapp.Models.Client

我的Client＆amp; ClientViewModel具有完全相同数量的道具，下面是我正在使用的代码及其抛出错误，但没有获得太多信息，我在这里缺少什么？

Client client = context.Clients.Where(x => x.CustomerID == id).FirstOrDefault();
ClientViewModel clientViewModel = Mapper.Map<Client, ClientViewModel>(client);

发生了“AutoMapper.AutoMapperMappingException”类型的异常在AutoMapper.dll中但未在用户代码中处理

Answer 1

您忘记创建地图了。将其添加到您的代码中（在调用Mapper类之前）：

Mapper.CreateMap<Client, ClientViewModel>();
ClientViewModel cvm = Mapper.Map<Client, ClientViewModel>(client);

Working demo on dotnetfiddle

Answer 2

在调用Map之前。您需要调用CreateMap：

Mapper.CreateMap<Client, ClientViewModel>();

通常，您可以在应用程序初始化代码/类中调用它，例如在global.asax.cs中。

＆＃39; AutoMapper.AutoMapperMappingException＆＃39;发生在AutoMapper.dll中

2 个答案: