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Posted 22 Apr 2002

dotNETSender - Windows Messenger like GUI for net send command

, 7 May 2002
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Windows Messenger like GUI for net send command
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Sample Image - MainDlg.jpg

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dotNETSender is a simple application which provides a neat GUI for the windows “net send” command. It looks like MSN Messenger; you can add/delete/edit contacts in the contact list. If the contact’s computer is turned off, the corresponding node will show an offline icon. When minimized, the application runs in the system tray.


This is a good piece of code for beginners to get an idea about threading in C#, delegates and events, registry operations, file operations and invoking another process from within the program.

Sample Image

The elements in the tree are mapped to objects in the contact list. The

class encapsulates the functionality and properties of a contact. The ContactList class holds a collection of Contact objects as a array property. The functions in the NetSender class are used to send messages and also to check whether a contact’s machine is turned off or not.

When the Refresh function in ContactList class runs, it fires an event, the form class is subscribed to this event and when it receives the event, the tree view gets refreshed.

After being minimised to the tray, the hidden application window can be restored by double-clicking the system tray icon.

How to Build the Application

  1. Extract all files in to a folder.
  2. Open dotNETSender.sln file in the Visual Studio .NET editor.
  3. Build the application.


This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here


About the Author

Sunil TG
Architect Siemens
India India
No Biography provided

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Comments and Discussions

GeneralMy vote of 1 Pin
mjanulaitis123418-May-10 4:59
membermjanulaitis123418-May-10 4:59 
RantDoes not work on Server 2008 Pin
mjanulaitis123418-May-10 4:59
membermjanulaitis123418-May-10 4:59 
QuestionWhat is "System Name" that should be entered ? Pin
adamnguyen19-Nov-08 8:49
memberadamnguyen19-Nov-08 8:49 
AnswerRe: Rebuild Error. Pin
Sunil TG26-Oct-08 4:28
memberSunil TG26-Oct-08 4:28 
GeneralPing Code Pin
thebeekeeper15-Dec-06 4:59
memberthebeekeeper15-Dec-06 4:59 
GeneralCannot run Project Pin
awsedrftgy31-Jul-05 0:21
memberawsedrftgy31-Jul-05 0:21 
GeneralSystem Name Pin
folkienux3-Feb-05 0:46
memberfolkienux3-Feb-05 0:46 
GeneralCannot send message! Pin
Krishna Rathod18-Oct-04 23:58
memberKrishna Rathod18-Oct-04 23:58 
GeneralRegistry Key Permission Pin
benoit_laflamme4-Oct-04 19:53
memberbenoit_laflamme4-Oct-04 19:53 
GeneralRe: Registry Key Permission Pin
folkienux3-Feb-05 0:49
memberfolkienux3-Feb-05 0:49 
GeneraldotNETSender is really good! Pin
lmmmm17-Sep-04 7:41
memberlmmmm17-Sep-04 7:41 
Generaldoes this application need .NET framework to be installed Pin
lava_kushal6-Sep-04 19:51
memberlava_kushal6-Sep-04 19:51 
GeneralRe: does this application need .NET framework to be installed Pin
Sunil TG16-Sep-04 22:56
memberSunil TG16-Sep-04 22:56 
GeneralHelp wanted in building a GUI .Net Remoting Pin
nutkase29-Mar-04 21:35
membernutkase29-Mar-04 21:35 
QuestionCustom groups? Pin
shiner24726-Jan-04 13:56
membershiner24726-Jan-04 13:56 
AnswerRe: Custom groups? Pin
Sunil TG16-Sep-04 22:59
memberSunil TG16-Sep-04 22:59 
QuestionVS 6.0 or C++? Pin
AntonDel9-Aug-03 7:36
memberAntonDel9-Aug-03 7:36 
AnswerRe: VS 6.0 or C++? Pin
Sunil TG10-Aug-03 6:33
memberSunil TG10-Aug-03 6:33 
GeneralThank You Pin
DesScorp4-Aug-03 14:05
memberDesScorp4-Aug-03 14:05 
Although this project is primarily for teaching C#, the author helped me solve a practical problem. One of my networks is a small setup of less than 15 people, but with offices dispersed throughout the building. Email is overkill for a single line of information or question, and constant phone calls are annoying. On some older legacy machines (running 9X), I just set up WinPopup. Moving newer XP and Win 2000 machines into the network has complicated matters for instant messaging. Setting up an Exchange-based messaging service, or a Jabber server just seemed like overkill and too much work for a network this size. Your app works much like Winpopup, so it was easy for users to handle. I might even learn a little C# now....
GeneralNet Sender Pin
Anonymous4-Aug-03 6:21
sussAnonymous4-Aug-03 6:21 
GeneralNo Download of Code Pin
ARL21-Jul-03 18:18
memberARL21-Jul-03 18:18 
GeneralRe: No Download of Code Pin
Sunil TG24-Jul-03 6:25
memberSunil TG24-Jul-03 6:25 
GeneralStill Icon Error Pin
pochacco20-Jun-03 19:22
memberpochacco20-Jun-03 19:22 
GeneralRe: Still Icon Error Pin
Sunil TG24-Jul-03 6:29
memberSunil TG24-Jul-03 6:29 
Generalexcellent! here are a couple tips: Pin
ben creitz13-Jun-03 6:09
sussben creitz13-Jun-03 6:09 

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