在不知道名称的情况下获取对foreach绑定内集合的引用

   public static void Main()

   {

       TestMethod();

   }

   public static void TestMethod()

   {

       ArrayList list = new ArrayList() { 1, 2, 3, 4, 5 };

       foreach (var item in list)

       {

           // 获取对list集合的引用

           Type type = typeof(Program);

           FieldInfo[] fields = type.GetFields(BindingFlags.NonPublic | BindingFlags.Instance);

           foreach (var field in fields)

           {

               if (field.FieldType == typeof(IEnumerable))

               {

                   IEnumerable collection = (IEnumerable)field.GetValue(this);

                   Console.WriteLine(collection);

               }

           }

       }

   }

   public static void Main()

   {

       TestMethod();

   }

   public static void TestMethod()

   {

       ArrayList list = new ArrayList() { 1, 2, 3, 4, 5 };

       foreach (var item in list)

       {

           // 获取对list集合的引用

           var iterator = list.GetEnumerator();

           Type iteratorType = iterator.GetType();

           var field = iteratorType.GetField("list", BindingFlags.NonPublic | BindingFlags.Instance);

           var collection = (IEnumerable)field.GetValue(iterator);

           Console.WriteLine(collection);

       }

   }