//Written by Paul Seal for http://www.codeshare.co.uk

//Free for use by anyone however they want

//Buy me a coffee sometime, or donate on my PayPal link if you want.

​

using System;

using System.IO;

using System.Net;

using System.Text;

​

namespace Slack.Net

{

    /// <summary>

    /// This is the main class for Slack Messages

    /// </summary>

    public class Message

    {

        public string PostUrl { get; set; }

        public string Text { get; set; }

        public string Channel { get; set; }

        public string Icon_Emoji { get; set; }

        public string Username { get; set; }

        private string PostData

        {

            get

            {

                StringBuilder postData = new StringBuilder();

                postData.Append("payload={");

​

                if (!String.IsNullOrEmpty(this.Text))

                {

                    postData.Append("\"text\":\"" + this.Text + "\"");

                }

​

                if (!String.IsNullOrEmpty(this.Channel))

                {

                    postData.Append(",\"channel\":\"" + this.Channel + "\"");

                }

​

                if (!String.IsNullOrEmpty(this.Icon_Emoji))

                {

                    postData.Append(",\"icon_emoji\":\"" + this.Icon_Emoji + "\"");

                }

​

                if (!String.IsNullOrEmpty(this.Username))

                {

                    postData.Append(",\"username\": \"" + this.Username + "\"");

                }

​

                postData.Append("}");

                return postData.ToString();

            }

        }

​

        /// <summary>

        /// Constructor for the Message class

        /// </summary>

        /// <param name="postUrl">The Webhook URL</param>

        /// <param name="text">The message to send</param>

        /// <param name="channel">The channel name if you want to send the message to a different channel</param>

        /// <param name="icon_emoji">The emoji to use for the icon of the BOT user</param>

        /// <param name="username">The name to use for the BOT user</param>

        public Message(string postUrl, string text, string channel = null, string icon_emoji = null, string username = null)

        {

            PostUrl = postUrl;

            Text = text;

            Channel = channel;

            Icon_Emoji = icon_emoji;

            Username = username;

        }

​

        /// <summary>

        /// Calls the method to process the web request

        /// </summary>

        /// <returns>A string value for the response from the server</returns>

        public string Send()

        {

            return ProcessRequest(this.PostUrl, this.PostData);

        }

​

        /// <summary>

        /// Simple method for processing web requests

        /// </summary>

        /// <param name="postUrl">The url to post to</param>

        /// <param name="postData">The data to post in the web request</param>

        /// <returns>A string value for the response from the server</returns>

        private string ProcessRequest(string postUrl, string postData)

        {

            WebRequest request = WebRequest.Create(postUrl);

            request.Method = "POST";

            byte[] byteArray = Encoding.UTF8.GetBytes(postData);

            request.ContentType = "application/x-www-form-urlencoded";

            request.ContentLength = byteArray.Length;

            Stream dataStream = request.GetRequestStream();

            dataStream.Write(byteArray, 0, byteArray.Length);

            dataStream.Close();

            WebResponse response = request.GetResponse();

            dataStream = response.GetResponseStream();

            StreamReader reader = new StreamReader(dataStream);

            string responseFromServer = reader.ReadToEnd();

            reader.Close();

            dataStream.Close();

            response.Close();

            return responseFromServer;

        }

    }

    public class Program

    {

        public static void Main()

        {

            string webhookUrl = "https://hooks.slack.com/services/fake-url/not-real-url/just-for-demo-purposes";

            string text = "Testing slack integration";

            string channelName = "#general";

            string emojiIcon = ":computer:";

            string username = "codeshare.co.uk";

            Slack.Net.Message message = new Slack.Net.Message(webhookUrl, text, channelName, emojiIcon, username);

            message.Send();

        }

    }

}