public class LogAnalyzer
        {
            private IWebService service;
            private IEmailService email;

            public IWebService Service
            {
                get { return service; }
                set { service = value; }
            }

            public IEmailService Email
            {
                get { return email; }
                set { email = value; }
            }

            public void Analyze(string fileName)
            {
                if (fileName.Length < 8)
                {
                    try
                    {
                        service.LogError("the file name is to short" + fileName);
                    }
                    catch (Exception e)
                    {
                        email.SendEmail("From@test.com", "To@test.com", "IWebServiceFailed", e.Message);
                    }
                }
            }
        }

        public interface IWebService { void LogError(string log); }
        public interface IEmailService {
            string ErrorMsg { get; set; }
            void SendEmail(string from, string to, string log, string errorMsg);
        }