如何在自动映射器中的可查询映射中为枚举创建映射

class Program
    {
        static void Main(string[] args)
        {
            var emp1 = new Soure.Employee();
            emp1.TestEnum = Soure.MyEnum1.red;
            var emp2 = new Soure.Employee();
            emp2.TestEnum = Soure.MyEnum1.yellow;
            var empList = new List<Soure.Employee>() { emp1, emp2 }.AsQueryable();
            var mapExpr = Mapper.CreateMap<Soure.Employee, destination.Employee>();
            Mapper.CreateMap<Soure.Department, destination.Department>();
            Mapper.CreateMap<Soure.MyEnum1, destination.MyEnum2>();
            Mapper.AssertConfigurationIsValid();
            var mappedEmp = empList.Project().To<destination.Employee>();
        }  
    }

我正在将Source.Employee映射到Destination.Employee。可以映射所有属性。但是在枚举映射上，它给了我异常，无法将TestEnum映射到Int32如果我使用覆盖

var mapExpr = Mapper.CreateMap<Soure.Employee, destination.Employee>()
        .ForMember(x => x.TestEnum, opt => opt.MapFrom(s => (destination.MyEnum2)s.TestEnum));

然后它起作用了。

映射类如下面所示

namespace Soure
{
    public class Employee
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public Department dept { get; set; }
        public int age { get; set; }
        public MyEnum1 TestEnum { get; set; }
        public Employee()
        {
            this.Id = 1;
            this.Name = "Test Employee  Name";
            this.age = 10;
            this.dept = new Department();
        }
    }
    public class Department
    {
        public int Id { get; set; }
        public string DeptName { get; set; }
        Employee emp { get; set; }
        public Department()
        {
            Id = 2;
            DeptName = "Test Dept";
        }
    }
    public enum MyEnum1
    {
        red,
        yellow
    }
}
namespace destination
{
    public class Employee
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public int age { get; set; }
        public MyEnum2 TestEnum { get; set; }
        public Department dept { get; set; }
    }
    public class Department
    {
        public int Id { get; set; }
        public string DeptName { get; set; }
        Employee emp { get; set; }
    }
    public enum MyEnum2
    {
        red,
        yellow
    }
}