asked on

Application Exit Checking

HI,
I am having an issue with a couple of methods in my program.

Is there a way I can check and see if any of these threads are running and if not the software goes by it without crashing?

EC0-EC270 are programs

EC4-EC7 are forms off of the main

private void Form1_FormClosed(object sender, FormClosedEventArgs e)
{
if (EC0 != null)
EC0.Kill();
if (EC90 != null)
EC90.Kill();
if (EC180 != null)
EC180.Kill();
if (EC270 != null)
EC270.Kill();
if (ec4 != null)
ec4.Close();
if (ec5 != null)
ec5.Close();
if (ec6 != null)
ec6.Close();
if (ec7 != null)
ec7.Close();
}

private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{

if (EC0 != null)
EC0.Kill();
if (EC90 != null)
EC90.Kill();
if (EC180 != null)
EC180.Kill();
if (EC270 != null)
EC270.Kill();
if (ec4 != null)
ec4.Close();
if (ec5 != null)
ec5.Close();
if (ec6 != null)
ec6.Close();
if (ec7 != null)
ec7.Close();

Application.Exit();
}

private void resetApplicationToolStripMenuItem_Click(object sender, EventArgs e)
{

if (EC0 != null)
EC0.Kill();
if (EC90 != null)
EC90.Kill();
if (EC180 != null)
EC180.Kill();
if (EC270 != null)
EC270.Kill();
if (ec4 != null)
ec4.Close();
if (ec5 != null)
ec5.Close();
if (ec6 != null)
ec6.Close();
if (ec7 != null)
ec7.Close();

Application.Restart();
}

Ravi Singh

Hi, not sure on what you exactly mean - can you explain further please? although, one modification that I would make is to encapsulate that common code into a seperate method so that you only need to change the code in one location in the future:

private void KillAndStuff()
{
if (EC0 != null)
EC0.Kill();
if (EC90 != null)
EC90.Kill();
if (EC180 != null)
EC180.Kill();
if (EC270 != null)
EC270.Kill();
if (ec4 != null)
ec4.Close();
if (ec5 != null)
ec5.Close();
if (ec6 != null)
ec6.Close();
if (ec7 != null)
ec7.Close();
}

schenkp

ASKER

Hi Zepher,
ECO, EC90, EC180, and EC270 are real programs that get launched when the user click on a button on the main program.

There path is C:\program files\mysuff\ECO.exe, etc

EC4, EC5, EC6, and EC7 are all forms that get launched from the main program when a user click on the same button.

What happens is the user makes a choice and EC0, EC4, and EC90 are launched (for example) so now we have the main program, one form( EC4) and 2 external programs (EC0, EC90) are running. No i have a timer that executes and usess StuffandKill();

EC0, EC4, and EC90 all close down they way they should, but after this if the user clicks on any of these methods

Appliation.Ext();
KillAndStuff()

Application.Rest();
KillAndStuff()

Form_closed();
KillAndStuff()

The application throws up and exception and says that EC0;

System.InvalidOperationException was unhandled
Message="Cannot process request because the process has exited."
Source="System"
StackTrace:
at System.Diagnostics.Process.GetProcessHandle(Int32 access, Boolean throwIfExited)
at System.Diagnostics.Process.Kill()

So i was thinking that maybe the KillandStuff() methode needs a little error checking or something?

ASKER CERTIFIED SOLUTION

Ravi Singh

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schenkp

ASKER

Thanks,

Works great:)