Question

我是Automapper的新手。通过以下链接，我试图了解它的实际效果。

我使用的是Automapper v 5.2.0

class Program
{
    static void Main(string[] args)
    {
        //PLEASE IGNORE NAMING CONVENTIONS FOR NOW.Sorry!!
        //on Startup 
        AppMapper mapperObj = new AppMapper();
        mapperObj.Mapping();

        DAL obj = new DAL();
        var customer = obj.AddCustomers();


    }
}

class Customer
{
    public int CustomerId { get; set; }

    public string CustName { get; set; }
}


class CustomerTO
{
    public int CustId { get; set; }

    public object CustData { get; set; }
}


class AppMapper
{
    public void Mapping()
    {
        var config = new MapperConfiguration(cfg =>
                    {
                        cfg.CreateMap<Customer, CustomerTO>();
                    });

        IMapper mapper = config.CreateMapper();

    }
}

class DAL
{
    public IEnumerable<CustomerTO> AddCustomers()
    {
        List<Customer> customers = new List<Customer>();
        customers.Add(new Customer() { CustName = "Ram", CustomerId = 1 });
        customers.Add(new Customer() { CustName = "Shyam", CustomerId = 2 });
        customers.Add(new Customer() { CustName = "Mohan", CustomerId = 3 });
        customers.Add(new Customer() { CustName = "Steve", CustomerId = 4 });
        customers.Add(new Customer() { CustName = "John", CustomerId = 5 });

        return customers;   //throws error

    }
}

错误 - 无法将类型System.Collections.Generic.List'隐式转换为 'System.Collections.Generic.IEnumerable'。存在显式转换（您是否错过了演员？）

如何将List<Customer>映射到List<CustomerTO>？

请注意，Customer我的string类型的属性名称为Custname CustomerTO CustData我的名称为object的属性为project.mouseenter(function() { var project = $(this).hasClass('disable'); if(!project){ var colourDuration = 750, colourDelay = 550; $(this).find('.colour-block').stop(true,false).velocity({left:'100%'},{duration: colourDuration, delay: colourDelay, complete: function() { $(this).addClass('disable'); }}); $(this).find('p').stop(true,false).velocity({height:'26px'},{duration: 500, delay: 225}); $(this).find('button').stop(true,false).velocity({height:'26px'},{duration: 500, delay: 225}); } }); project.mouseleave(function() { var project = $(this).hasClass('disable'); if(!project){ var colourDuration = 750, colourDelay = 550; $(this).find('.colour-block').stop(true,false).velocity({left:0},{duration: colourDuration, delay: colourDelay, complete: function() { $(this).removeClass('disable'); }}); $(this).find('p').stop(true,false).velocity({height:0},{duration: 500, delay: 225}); $(this).find('button').stop(true,false).velocity({height:0},{duration: 500, delay: 225}); } }); 1}}。那么我该如何映射这个不同的名称属性呢？

感谢。

Answer 1

对要映射的类型中的属性使用相同的名称是我们AutoMapper的最简单方法。这样你现在的配置就可以了。

但是，如果您不这样做，则需要指定属性的映射方式，如下所示

cfg.CreateMap<Customer, CustomerTO>()
.ForMember(dto => dto.CustData, opt => opt.MapFrom(entity => entity.CustName))
.ForMember(dto => dto.CustId, opt => opt.MapFrom(entity, entity.CustomerId));

我假设您要将CustName直接映射到CustData以上，这样就行了。

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