I try to automatically shut down an wpf application at midnight with:
Dispatcher.BeginInvokeShutdown(DispatcherPriority.Normal);
This works very well in general, but when there is a message box opening waiting for user response, the application fails to shutdown. Is there a way to shut down the application regardless of the opening messagebox?
For WPF Applications use
Application.Current.Shutdown();
Maybe you can use Environment.Exit (immediately exits...very naughty to do on a GUI app) or find the MessageBox window and send them a close message, or hook the creation of any native MessageBox Dialogs (...i.e. track the Window handle, so you can then close them).
Close C# Console Application after MessageBox click
Force to close MessageBox programmatically
http://social.msdn.microsoft.com/forums/en-US/winforms/thread/d3f89686-e4d0-4bb1-9052-31abef2a9d2a/
Closing Applications
Right way to close WPF GUI application: GetCurrentProcess().Kill(), Environment.Exit(0) or this.Shutdown()
http://msdn.microsoft.com/en-us/magazine/cc188920.aspx
And a very very naughty way:
Process.GetCurrentProcess().Kill()
Related
I want to close another program that does not have a main window.
It runs in background.
So process.CloseMainWindow() will not work,
And using process.kill() will lose some data.
Is there a graceful way to close this kind of program without losing data for example by means of SendMessage or something else?
It's just a small program puts a tray icon in task bar not a windows service
In that case it must have a message pump and so you can post a Windows WM_QUIT message to the process. When the target process processes it message pump and encounters this message, it will gracefully quit. Alternatively, you may post WM_CLOSE but then you need to know which window (it still works if the window is invisible).
I want to properly close any application (not kill) running in system tray. I have tried SendKeys() but it fails. Sending Alt+F4, Alt+F then x all fail because tray applications have no main window. Any idea how to do that? the objective to to properly exit an application that performs some inner tasks upon exiting, running in system tray without terminating, just like when its titlebar exit button is clicked.
There is no simple answer to this. Each and every application has its own way of controlling life time. You can even write Forms application that does not respond to [Alt F4] to shut it down.
The only way you can an arbitrary process of which you know nothing (other than that it has put an icon into the system tray), is to terminate the process. And that, as Gian Paolo pointed out, is just not cricket.
From what you have written on the comments on the other answers, it sounds like you merely want to close a specific app. You can do this with the taskkill utility.
I'm running a simple .NET Windows Forms application. When I click the close button, the Windows form gets closed, but the process is not closing. When I look at the Task Manager, I see that the process for the application is still live, as a background process.
Can somebody explain why that is? Am I missing some function when it's closing?
You need to call
Application.Exit();
in your Form's closing event.
Application.Exit
Informs all message pumps that they must terminate, and then closes all application windows after the messages have been processed. This is the code to use if you are have called Application.Run (WinForms applications), this method stops all running message loops on all threads and closes all windows of the application.
// WinForms app
System.Windows.Forms.Application.Exit();
Put this code on you from's closing event.
The main reason for not close properly, When your application works with the multi threading. You should use the following, it's works for me as well.
Application.ExitThread();
In my project I have a MessageBox that pops up from time to time.
When I'm playing a game and the MessageBox appears, the game is minimized and I'm back to the desktop.
This might depend from app to app, but this specific app/game minimizes when MessageBox appears.
How to avoid this behavior? Is there anything I can do to the MessageBox to make it lose focus/not activated ? I tried to look at the MessageBox methods but no luck.
It sounds like you want the message box to be able to display while the rest of your code is still running. Type of messagebox you are using is modal and needs to be closed until it allows you to interact with the other open window.
I suggest you start a new thread for the message box so that the thread can continue to run allowing you to be able to interact with the other windows.
I have this problem:
I built an application in c# .net 2.0 that is on the tray bar and everything works fine: if I click the close menu (that i've added) I call Close(); of the main form and everything is ok.
my problem is: if a person shutdown the pc without closing my application, windows seems to be not able to close this program and the shutdown routine is breaked.
a note: in my app I use a BackgroundWorker.
thanks in advance
If your application is doing something that is stopping windows from shutting down properly, you should handle the SystemEvents.SessionEnding event in your application. This event is fired when the system is shutting down or the user is logging off.
In your event handler, do whatever is necessary to allow your application to be terminated gracefully, such as stopping all background workers / threads - etc.