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Google Chat Desktop Application using Jabber.Net

, 20 Mar 2009 Public Domain
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A simple Google chat ( gtalk ) application using Jabber.Net


This is a simple Google chat ( gtalk ) desktop application developed in C#. With this application, we can easily chat with our Gmail contacts. This application serves as a best approach for developers to start with the chat application for Gmail.


This application is developed using a .NET open source library, This library contains a set of .NET controls for sending and receiving extensible messaging and presence protocol (XMPP), also known as the Jabber.

Using the Code

After installing the Jabber.Net library, you can see the list of Jabber.Net controls in the Visual Studio toolbox. Now, add the JabberClient control to the form and assign the user name and password.

User = txtUserName.Text;
Pwd = txtPassword.Text;
jabberClient1.User = User;
jabberClient1.Server = "";
jabberClient1.Password = Pwd;
jabberClient1.AutoRoster = true;

Now, add a RosterTree control to populate the contact list and assign the instance of the roster manager and the presence manager to the roster tree control.

rm = new RosterManager();
rm.Stream = jabberClient1;
rm.AutoSubscribe = true;
rm.AutoAllow = jabber.client.AutoSubscriptionHanding.AllowAll;
rm.OnRosterBegin += new bedrock.ObjectHandler(rm_OnRosterBegin);
rm.OnRosterEnd += new bedrock.ObjectHandler(rm_OnRosterEnd);
rm.OnRosterItem += new RosterItemHandler(rm_OnRosterItem);

The RosterManager will add the contact list to the roster tree and the PresenceManager will add a notification for the contact whether the contact is in online or offline mode.

pm = new PresenceManager();
pm.Stream = jabberClient1;

rosterTree1.RosterManager = rm;
rosterTree1.PresenceManager = pm;

After assigning all of the above, we have to call the connect() method to login with the given credentials and populate the roster tree with the contact list.

jabberClient1.OnAuthenticate += new bedrock.ObjectHandler(jabberClient1_OnAuthenticate);

On double clicking a contact in the contact list will open a chat window, through which the user can send messages using the following function:


private void SendMessage()
	jabber.protocol.client.Message reply = 
		new jabber.protocol.client.Message(_jabberClient.Document);
    if (rtbSendMessage.Text != "\n" && rtbSendMessage.Text != " ")
        reply.Body = rtbSendMessage.Text;
        if (reply.Body != "")
            reply.To = _mailId;
            string sentMsg = _jabberClient.User + " Says : " + 
					rtbSendMessage.Text + "\n";
            rtbSendMessage.Text = "";

The JabberClient is registered with an onMessage event to receive whenever an incoming message arrives. This is handled by the following function:

public void _jabberClient_OnMessage
	(object sender, jabber.protocol.client.Message msg)
   if (!this.ReceiveFlag)
       if (msg.From.Bare == this.MailId)
           if (msg.Body != "")
               string receivedMsg = msg.From.User + " Says : " + msg.Body + "\n";
               msg.Body = "";


  • Released in March 2009


This article, along with any associated source code and files, is licensed under A Public Domain dedication


About the Author

Software Developer
India India
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Comments and Discussions

QuestionNeed help setting Subscription to "both" PinmemberMember 1047794224-Feb-15 16:25 
Questioncan we send or receive files like messages? Pinmembershashank76814-Dec-14 20:25 
Questionsend images Pinmemberkazemfallahi137117-Sep-13 4:15 
GeneralMy vote of 5 PinmemberMember 919827214-Jun-13 22:56 
Questionaltering it PinmemberKeith Aiden17-May-13 7:16 
QuestionThe user name and password login unsuccessful Pinmemberlanyan_hhb29-Jan-13 16:20 
QuestionAny updates? Pinmemberkiquenet.com18-Jan-13 2:38 
QuestionJoin Group Chat Pinmembertithsochinda10-Jan-13 0:28 
Dear sir,
This is is very good, but I cannot find how to join chat room in your example,
so please let me know how can I join chat room.
I'm looking for your reply,
Thanks in advanced
GeneralMy vote of 5 PinmemberAnkita M5-Nov-12 0:10 
QuestionCan We Get Previously Set Status Message [modified] Pinmemberkarthikeyanthangavel2-Nov-12 0:35 
GeneralMy vote of 5 Pinmembergaga blues22-Oct-12 5:13 
GeneralMy vote of 5 Pinmemberarunraju2-Aug-12 0:02 
QuestionDoubt PinmemberSIVA111118-Jul-12 1:10 
QuestionStatus PinmemberInfinity82717-Apr-12 12:21 
AnswerRe: Status Pinmembernaoufal zerai18-Aug-12 20:07 
GeneralRe: Status PinmemberInfinity82719-Aug-12 11:59 
GeneralRe: Status Pinmembernaoufal zerai24-Aug-12 12:28 
GeneralRe: Status PinmemberInfinity82724-Aug-12 15:41 
GeneralRe: Status Pinmembernaoufal zerai30-Aug-12 4:46 
GeneralRe: Status PinmemberInfinity82730-Aug-12 12:33 
QuestionBug on incoming message PinmemberMember 826597110-Feb-12 8:14 
GeneralMy vote of 4 Pinmemberandrewsroys19-Jan-12 23:35 
QuestionShow only online contacts or online contacts on top Pinmemberdivac1218-Jan-12 13:45 
GeneralMy vote of 5 Pinmemberkonduc14-Jun-11 2:41 
GeneralMy vote of 5 PinmemberNetDave30-Mar-11 11:28 

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