using System;

using System.Collections;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("IEnumerable<string> {0}", IsGenericEnumerable<IEnumerable<string>>());

        Console.WriteLine("IEnumerable {0}", IsGenericEnumerable<IEnumerable>());

        Console.WriteLine("IList<string> {0}", IsGenericEnumerable<IList<string>>());

        Console.WriteLine("List<string> {0}", ImplementsGenericEnumerable<List<string>>());

        Console.WriteLine("KeyValuePair<int,string> {0}", ImplementsGenericEnumerable<KeyValuePair<int,string>>());

    }

    public static bool IsGenericEnumerable<T>()

    {

        return typeof(T).IsGenericType && typeof(T).GetGenericTypeDefinition() == typeof(IEnumerable<>);

    }

    public static bool ImplementsGenericEnumerable<T>()

    {

        return typeof(T).IsGenericType && typeof(T).GenericTypeArguments.Length == 1 && typeof(IEnumerable<>).MakeGenericType(typeof(T).GenericTypeArguments).IsAssignableFrom(typeof(T));

    }

}