Writing code to fire the last method to throw an exception in a multi-threaded web app

public static class Extensions {
    public static void Try(this Action a, int maxTries) {
       new (Func<bool>(() => { a(); return true; })).Try(maxTries);
    }

    public static TResult Try<TResult>(this Func<TResult> f, int maxTries) {
       Exception lastException = null;

       for (int i = 0; i < maxTries; i++) {
          try {
              return f();
          } catch (Exception ex) {
              lastException = ex;
          }
       }

       throw lastException;
    }
}

// Set a property
new Action(() => myObject.Property = 5).Try(5);

// With a return value
var count = new Func<int>(() => myList.Count).Try(3);

Utilities.Try(
   () => MyObject.Property = 5
).Repeat(5);

Utilities.Try(() => {
   MyObject.Property1 = 5;
   MyObject.Property2 = 6;
   MyObject.Property3 = 7;
}).Repeat(5);

public class TryAgain
{
    public delegate void CodeToTryAgain ();

    public static void Repeat<E>(int count, CodeToTryAgain code) where E : Exception
    {
        while (count-- > 0)
        {
            try
            {
                code();
                return;
            }
            catch (E ex)
            {
                Console.WriteLine("Caught an {0} : {1}", typeof(E).Name, ex.Message);
                // ignoring it!
            }
        }
    }
}

TryAgain.Repeat<MyException>(5, delegate()
{
    ThrowTwice();
});