带有linq的Automapper如何? [英] Automapper with linq how?

问题描述

好的，我真的很难找到我需要做的很好的例子.所以，我会在这里问.

Ok, I'm really struggling with finding a good example of what I need to do. So, I'll ask here.

比方说，我有一个名为Customer的实体类(EF)和一个名为CustomerViewModel的对应视图模型类.

Let's say I have a entity class (EF) named Customer and a corresponding view-model class named CustomerViewModel.

使用AutoMapper，我创建了以下映射:

Using AutoMapper, I have created the following mappings:

 Mapper.CreateMap<CustomerViewModel, Customer>(); 
 Mapper.CreateMap<Customer, CustomerViewModel>();

我将如何修改以下代码以利用此映射?

How would I modify the following code to make use of this mapping?

    public static List<CustomerViewModel> GetCustomers()
    {
        using (var context = new GCSBaseEntities())
        {
            var query = from c in context.Customers
                        select new CustomerViewModel
                        {
                            CompanyName = c.CompanyName,
                            Id = c.Id,
                            EmailAddress = c.EmailAddress,
                            FirstName = c.FirstName,
                            LastName = c.LastName,
                            MiddleName = c.MiddleName,
                            ModifiedDate = c.ModifiedDate,
                            Phone = c.Phone,
                            SalesPerson = c.SalesPerson,
                            Suffix = c.Suffix,
                            Title = c.Title,
                            FullName = c.FirstName + " " + c.LastName
                        };

            return query.ToList();
        }
    } 

先谢谢了.

推荐答案

弄清楚了.为了避免上述错误，您必须在客户之后添加调用.AsEnumerable()，如下所示:

Figured it out. In order to avoid the aforementioned error, you have to Add the call the .AsEnumerable() after Customers like so:

     return from c in context.Customers.AsEnumerable()
        select Mapper.Map<CustomerViewModel>(c);

我是通过以下线程得到的: LINQ和AutoMapper

I got this from this thread: LINQ and AutoMapper

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