Question

我在我的方法中使用了AutoMapper但是没有用。请帮我纠正。

public virtual IEnumerable<TViewModel> FindAllByCriteria(Expression<Func<TModel, bool>> predicate   = null, params Expression<Func<TModel, object>>[] includeProperties)
    {
        IQueryable<TModel> items = RepositoryContainer<TRepository>().FindAll();
        if (includeProperties != null)
        {
            foreach (var includeProperty in includeProperties)
            {
                items = items.Include(includeProperty);
            }
        }
        var destination_VMList = new List<TViewModel>();
        var source_tModelList = new List<TModel>();
        source_tModelList = predicate != null ? items.Where(predicate).ToList() : items.ToList();

        Mapper.Map(source_tModelList, destination_VMList); // Error happened!

        return destination_VMList;
    }

错误讯息：

Missing type map configuration or unsupported mapping.

Mapping types:
Tag -> TagViewModel
Jahan.Blog.Model.Tag -> Jahan.Blog.ViewModel.TagViewModel

Destination path:
List`1[0]

Source value:
System.Data.Entity.DynamicProxies.Tag_F1F5C39705DF9507B542CCC1A519D0757945F8E00B19F4F20C89F81DF8358563

Answer 1

您必须先配置地图：

Mapper.CreateMap<Tag , TagViewModel>();

然后你可以这样映射：

var destination_VMList = Mapper.Map<IEnumerable<TModel>, IEnumerable<TViewModel>>(source_tModelList);

自动映射器不起作用。

1 个答案: