ExpressionTree and IEnumerable implementation

Question

我有以下Generic类，它接收类型T，并且必须实现IEnumerable：

public class ConfigurationHelper<T>: IEnumerable<object[]> where T: BaseTestConfiguration 
{
    public T _configuration;
    public ConfigurationHelper(configuration)
    {
        _configuration = configuration;
    }
    public IEnumerator<object[]> GetEnumerator()
    {
        ParameterExpression element = Expression.Parameter(typeof(T), "element");
        //use reflection to check the property that's a generic list
        foreach (PropertyInfo property in _configuration.GetType().GetGenericArguments()[0].GetProperties())
        {
        }
       /* HERE IS MY ISSUE */
       return _configuration.Select(x=>GET LIST<OTHERTYPE> PROPERTY)
                            .SelectMany(i => new object[] { AS MANY PROPERTIES AS OTHERTYPE  })
                            .GetEnumerator();
    }
    IEnumerator IEnumerable.GetEnumerator()
    {
        return GetEnumerator();
    }
}

从我的类型T中，我唯一知道的是只有一个属性类型List<OtherType>，我想返回一个IEnumerable<object[]>，其中包含与此OtherType中的属性一样多的项。

我想使用ExpressionTrees来实现这一点，但我不知道如何编写它。

Answer 1

如果没有BestTestConfiguration的定义，就真的做不了什么。如果你能提供，我会更改代码。请检查以下代码我试图从我的理解做什么：

class Program
    {
        public static void Main(string[] args)
        {
            var helper = new ConfigurationHelper<BestTestConfiguration>(new BestTestConfiguration()
            {
                Objects = new List<string>()
                {
                    "testing 1",
                    "testing 2"
                }
            });
            var item = helper.GetEnumerator();
            Console.ReadLine();
        }

    }
    public class ConfigurationHelper<T> : IEnumerable<object[]> where T : BestTestConfiguration
    {
        public T Configuration;
        public ConfigurationHelper(T configuration)
        {
            Configuration = configuration;
        }
        public IEnumerator<object[]> GetEnumerator()
        {
            ParameterExpression element = Expression.Parameter(typeof(T), "element");
            //use reflection to check the property that's a generic list
            var items = new List<object[]>();
            foreach (PropertyInfo property in Configuration.GetType().GetProperties().Where(x => x.PropertyType.IsGenericType))
            {
                var valueOfProperty = Configuration.GetType().GetProperty(property.Name).GetValue(Configuration, null);
                items.Add(new object[] {valueOfProperty});
            }
            return items.GetEnumerator();
        }
        IEnumerator IEnumerable.GetEnumerator()
        {
            return GetEnumerator();
        }
    }
    public class BestTestConfiguration
    {
        public List<string> Objects { get; set; }
    }