using System;

using System.Collections.Generic;

using System.Reflection;

​

interface IFoo { }

class FooImpl : IFoo { }

​

//https://stackoverflow.com/questions/26037469/overload-resolution-issue-for-generic-method-with-constraints

​

    class TestClass

    {

        static void Bar<T>(IEnumerable<T> value) 

            where T : IFoo

            { Console.WriteLine("static void Bar<T>(IEnumerable<T> value) called."); }

​

        static void Bar<T>(T source)

            where T : IFoo

            {Console.WriteLine("static void Bar<T>(T source) called."); }

        public static void Test()

        {

            var value = new FooImpl[0];

            Bar(value);

        }   

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: {0} ({1})", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , GetNetVersion());

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

        public static string GetNetVersion()

        {

            //https://techblog.dorogin.com/how-to-detect-net-core-version-in-runtime-ecd65ad695be

            //

            var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;

            var assemblyPath = assembly.Location.Split(new[] { '/', '\\' }, StringSplitOptions.RemoveEmptyEntries);

            int netCoreAppIndex = Array.IndexOf(assemblyPath, "Microsoft.NETCore.App");

            if (netCoreAppIndex > 0 && netCoreAppIndex < assemblyPath.Length - 2)

                return assemblyPath[netCoreAppIndex + 1];

            return null;

        }

    }

​