How to Show Message box in Windows Service C#

Question

5.00/5 (1 vote)

See more:

Hi Developers,

Can any body will share how to show message box in Windows Service, i heard that we cannot show message box in Windows Service but using "WTSSendMessage" this we can show the message box but how to do,please help me this.

Thanks & regards
Aravidn G

Posted 26-Dec-13 20:32pm

Aravind Garre

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sergey Alexandrovich Kryukov · Answer 1 · 2013-12-26T21:10:00

You cannot and you should not try to do it. The Windows Service is supposed to keep running even if all users log off, so it can work without having a desktop to show anything.

The approach to UI related to the service is different. You should develop a separate application with should communicate with the service through some IPC mechanism, for example through an IPC channel of remoting or WCF (in this case, self-hosted in your service), but it can be a socket or named pipe based communication. One of the approaches is this: you start such application when some user logs on (there is a registry entry "Run" for this purpose) and try to connect to the service. Use this channel for communications between the service and this UI application, in particular, to show service notifications.

—SA

Aravind Garre · Answer 2 · 2013-12-27T01:43:00

C#

[DllImport("wtsapi32.dll", SetLastError = true)]
    static extern bool WTSSendMessage(
                IntPtr hServer,
                [MarshalAs(UnmanagedType.I4)] int SessionId,
                String pTitle,
                [MarshalAs(UnmanagedType.U4)] int TitleLength,
                String pMessage,
                [MarshalAs(UnmanagedType.U4)] int MessageLength,
                [MarshalAs(UnmanagedType.U4)] int Style,
                [MarshalAs(UnmanagedType.U4)] int Timeout,
                [MarshalAs(UnmanagedType.U4)] out int pResponse,
                bool bWait);

C#

bool result = false;
                  String title = "Alert";
                  int tlen = title.Length;
                  String msg = sb.ToString();
                  int mlen = msg.Length;
                  int resp = 7;
                  result = WTSSendMessage(WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, title, tlen, msg, mlen, 4, 3, out resp, true);
                  int err = Marshal.GetLastWin32Error();

How to Show Message box in Windows Service C#

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0