RetryLogic.cs

// From StackOverflow
// Ref: http://stackoverflow.com/questions/1563191/c-sharp-cleanest-way-to-write-retry-logic
public static class Retry
{
   public static void Do(Action action, TimeSpan retryInterval, int retryCount = 3)
   {
       Do<object>(() => 
       {
           action();
           return null;
       }, retryInterval, retryCount);
   }
   public static T Do<T>(Func<T> action, TimeSpan retryInterval, int retryCount = 3)
   {
       var exceptions = new List<Exception>();

       for (int retry = 0; retry < retryCount; retry++)
       {
          try
          { 
              return action();
          }
          catch (Exception ex)
          { 
              exceptions.Add(ex);
              Thread.Sleep(retryInterval);
          }
       }

       throw new AggregateException(exceptions);
   }
}

public void TestDo()
{
  Retry.Do(() => SomeFunctionThatCanFail(), TimeSpan.FromSeconds(1));

  Retry.Do(SomeFunctionThatCanFail, TimeSpan.FromSeconds(1));

  int result = Retry.Do(SomeFunctionWhichReturnsInt, TimeSpan.FromSeconds(1), 4);
}