Added direct message capabilities.

README.md

@@ -37,6 +37,9 @@ and/or read tweets from your account:
 	foreach (var tweet in tweets)
 		Console.WriteLine("{0}: {1}", tweet.UserName, tweet.Text);
 
+	// Send a DM to your followers
+	twitter.SendMessage("Hello there!!", "<TWITTERHANDLE>")
+
 Copyright and license
 ---------------------
 

src/TinyTwitter/TinyTwitter.cs

@@ -44,6 +44,54 @@ public void UpdateStatus(string message)
 				.Execute();
 		}
 
+		public bool SendMessage(string message, string screenName)
+		{
+		    var userId = GetIdByScreenName(screenName);
+
+		    var eventObj =  new
+		    {
+			type = "message_create",
+			message_create = new
+			{
+			    target = new
+			    {
+				recipient_id = userId
+			    },
+			    message_data = new {text = message}
+			},
+		    };
+
+		    try
+		    {
+			new RequestBuilder(oauth, "POST",
+				"https://api.twitter.com/1.1/direct_messages/events/new.json")
+			    .Execute(true, eventObj);
+			return true;
+		    }
+		    catch
+		    {
+			return false;
+		    }
+
+		}
+
+		public string GetIdByScreenName(string screenName)
+		{
+		    var response = new RequestBuilder(oauth, "GET", "https://api.twitter.com/1.1/users/show.json")
+			.AddParameter("screen_name", screenName)
+			.Execute();
+
+		    dynamic deserializedResponse = new JavaScriptSerializer().DeserializeObject(response);
+
+		    if (deserializedResponse != null && deserializedResponse["id_str"] != null)
+		    {
+			return deserializedResponse["id_str"].ToString();
+		    }
+
+		    return null;
+
+		}
+
 		public IEnumerable<Tweet> GetHomeTimeline(long? sinceId = null, long? maxId = null, int? count = 20)
 		{
 			return GetTimeline("https://api.twitter.com/1.1/statuses/home_timeline.json", sinceId, maxId, count, "");
@@ -125,8 +173,8 @@ public RequestBuilder AddParameter(string name, string value)
 				return this;
 			}
 
-			public string Execute()
-			{
+			public string Execute(bool isSendMessage = false, object eventObj = null)
+			    {
 				var timespan = GetTimestamp();
 				var nonce = CreateNonce();
 
@@ -138,14 +186,21 @@ public string Execute()
 
 				var request = (HttpWebRequest)WebRequest.Create(GetRequestUrl());
 				request.Method = method;
-				request.ContentType = "application/x-www-form-urlencoded";
+				request.ContentType = isSendMessage ? "application/json": "application/x-www-form-urlencoded";
 
 				request.Headers.Add("Authorization", headerValue);
 
-				WriteRequestBody(request);
+				if (isSendMessage && eventObj != null)
+				{
+				    WriteRequestBody(request, eventObj);
+				}
+				else
+				{
+				    WriteRequestBody(request);
+				}
 
 				// It looks like a bug in HttpWebRequest. It throws random TimeoutExceptions
-				// after some requests. Abort the request seems to work. More info: 
+				// after some requests. Abort the request seems to work. More info:
 				// http://stackoverflow.com/questions/2252762/getrequeststream-throws-timeout-exception-randomly
 
 				var response = request.GetResponse();
@@ -154,16 +209,16 @@ public string Execute()
 
 				using (var stream = response.GetResponseStream())
 				{
-					using (var reader = new StreamReader(stream))
-					{
-						content = reader.ReadToEnd();
-					}
+				    using (var reader = new StreamReader(stream))
+				    {
+					content = reader.ReadToEnd();
+				    }
 				}
 
 				request.Abort();
 
 				return content;
-			}
+			    }
 
 			private void WriteRequestBody(HttpWebRequest request)
 			{
@@ -175,6 +230,20 @@ private void WriteRequestBody(HttpWebRequest request)
 					stream.Write(requestBody, 0, requestBody.Length);
 			}
 
+			public void WriteRequestBody(HttpWebRequest request, object eventObj)
+			    {
+				using (var streamWriter = new StreamWriter(request.GetRequestStream()))
+				{
+				    string json = new JavaScriptSerializer().Serialize( new
+				    {
+					@event = eventObj
+				    });
+
+				    streamWriter.Write(json);
+				}
+
+			    }
+
 			private string GetRequestUrl()
 			{
 				if (method != "GET" || customParameters.Count == 0)