Leave a Form active even if I'm using WaitforExit

[porro]

Hi,

I've got a question and I hope to find answers.

I've a multi-form project and I need to start a process from Form1 and also have the possibility to kill the launched process if I press a button in Form2.

My problem is that when I've launched the process I use "WaitForExit" to stop execution of the sub (because I need to start different processes in sequence) so I'm not able to press the button in Form2.

Is there a way to have Form2 active even if my program is waiting the process has exited? What I need is to have the possibility to interrupt the execution of the launched process.

Dim run_simulation As New System.Diagnostics.Process
            run_simulation .EnableRaisingEvents = True
            run_simulation .StartInfo.WorkingDirectory = Form1.folder_work
            run_simulation .StartInfo.FileName = "run_auto_simulation.bat"
            run_simulation .StartInfo.WindowStyle = rocessWindowStyle.Minimized
            run_adams.Start()
            Form1.Cursor = Cursors.WaitCursor

            'Form2 where there is Stop Button to kill run_simulation process
            Form2.Show()
            Form2.Focus()


            run_simulation.WaitForExit()
           
            Form1.Cursor = Cursors.Default

 

[JohnH]

WaitForExit is a blocking call that you can't use in a UI thread, because as you also noticed it stops your application, for this you have to use a secondary thread, for example the BackgroundWorker Component. Otherwise you can use Process.Exited Event.

For closing the external process you have Process.CloseMainWindow Method and Process.Kill Method.

 

[porro]

ok thanx... I'll take a look for BackgroundWorker, I've never used that before.

Bye