How to handle unexpectedly disappear but running window's state?

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I have added a procedure for termination action for some parallel running applications and deletion of some used files by main application to be shutdown safely when main application ends up. problem is that sometimes main application terminates due to some unexpected exceptions and sometimes it seems to be ended but it just disappears and run some where may be in background which cause other applications running and let remain used files in open state. That's why I need to create a service which monitor existence of this running application.

Now what will be the windows state of such unexpectedly disappeared application? also how can i perform deletion action on such files which are still open and used by another process and thus may cause access denied.

Posted 30-Jun-13 2:21am

Hitesh Rohilla

Updated 30-Jun-13 2:24am

v3

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Ron Beyer 30-Jun-13 9:57am

Did you write the "main" application? Or is this some third-party software you are using?

Hitesh Rohilla 30-Jun-13 18:09pm

i have wrote main application in visual studio using C#. other applications running in parallel are external applications executed by main application.

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Shahin Khorshidnia · Answer 1 · 2013-06-30T07:26:00

Solution 1

Hi
I think you can use Mutex Class to find out another instance of running application.

And look at this too:
Single-Instance C# Application - for .NET 2.0

But why wont the application be terminated after shutting down? If some Timers or Threads are used, you must handle it by stopping them before shutting down the app, for example in FormClosed event.

It's not bad to look at these:

Process not terminated at the end of the program

Application.Exit Method

Posted 30-Jun-13 7:26am

Shahin Khorshidnia

Updated 30-Jun-13 7:28am

v2

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Hitesh Rohilla 30-Jun-13 17:54pm

application safely termination method is written behind close button only and thus it safely shutdown when button is pressed but when form disappear or close unexpectedly then that safely termination method is not called and thus everything remains malfunctioning.

well your suggestions are really good let me give time for full study and try out.