int Foo(int param1, bool param2, string param3)
        {
            try
            {
                logger.Log(string.Format("Calling {0}({1}, {2}, {3})", "Foo", param1, param2, param3);

                ..
                var returnValue = ..;
                ..

                logger.Log(string.Format("Result for call {0}({1}, {2}, {3}) => {4}", "Foo", param1, param2, param3, returnValue);

                return returnValue;

            }
            catch(Exception ex)
            {
                logger.Log(string.Format("Exception while calling {0}({1}, {2}, {3}) => {4}", "Foo", param1, param2, param3, ex);
                throw;
            }
        }