using System;

using System.Collections.Generic;

using System.Linq;

public static class Program

{

    static IEnumerable<int> TestCases3(Action<int, Exception> exceptionHandler = null)

    {

        foreach (var item in Enumerable.Range(0, 10))

        {

            int value = default(int);

            try

            {

                switch (item)

                {

                    case 2:

                    case 5:

                        throw new ApplicationException("This bit failed");

                    default:

                        value = item;

                        break;

                }

            }

            catch(Exception e)

            {

                if (exceptionHandler != null)

                {

                    exceptionHandler(item, e);

                    continue;

                }

                else

                    throw;

            }

            yield return value;

        }

    }

    public static IEnumerable<T> CatchExceptions<T> (this IEnumerable<T> src, Action<Exception> action = null) {

        using (var enumerator = src.GetEnumerator()) {

            bool next = true;

​

            while (next) {

                try {

                    next = enumerator.MoveNext();

                } catch (Exception ex) {

                    if (action != null) {

                        action(ex);

                    }

                    continue;

                }

​

                if (next) {

                    yield return enumerator.Current;

                }

            }

        }

    }

​

    public static void Main()

    {

​

        Console.WriteLine(string.Join(", ", Enumerable.Range(-1,3).Select(v=>1/v).CatchExceptions().ToArray()));

        Console.WriteLine(string.Join(", ", TestCases3(null).Select(v=>1/v).CatchExceptions().ToArray()));  

        Console.WriteLine(string.Join(", ", TestCases3().Select(v=>1/v).CatchExceptions((e) => Console.WriteLine("Caught: {0}", e.Message)).ToArray()));    

    }

}