csharp 方法和参数第5条

Posted 2021-05-12

        public class MessageOption
        {
            internal string FromEmailAddress { get; set; }
            internal string MessageSubject { get; set; }
            internal List<string> ToEmailAddresses { get; set; }
            internal string MessageContent { get; set; }
            internal string MessageReplyTo { get; set; }

            public MessageOption From(string value)
            {
                FromEmailAddress = value;
                return this;
            }

            public MessageOption Subject(string value)
            {
                MessageSubject = value;
                return this;
            }

            public MessageOption ReplyTo(string value)
            {
                MessageReplyTo = value;
                return this;
            }

            
            public MessageOption Content(string value)
            {
                MessageContent = value;
                return this;
            }

            public MessageOption AddTo(string emailAddress)
            {
                if (ToEmailAddresses == null)
                    ToEmailAddresses = new List<string>();

                ToEmailAddresses.Add(emailAddress);
                return this;
            }
        }