Killing a thread from a different sub (need code)

[carlblanchard]

Before any one comments, ive read all the posts in this subject everything give comments but no CODE....

my app's processing is done in a new thread when the user clicks a button

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
            Dim MyThread As New Thread(AddressOf runProg)
            
            MyThread.Name = "Primary Search Thread"
            MyThread.Start()
            Me.StatusPanel1Status.Text = "Scanning Please Wait!"
 
        End Sub

ok this all works nicely

i then have a sub for when the user closes the application it simple checks if some files exists and if they do to prompt the user wana filter them yes or no if they click no the application quits (but the thread doesnt)

Private Sub MainApp_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
            Dim result As MsgBoxResult = MsgBox("There are still files to filter, do you wish to complete this before exiting", MsgBoxStyle.YesNo, "Input")
 
            If result = MsgBoxResult.Yes Then
                RunFilter()
            Else
                'exit the thread here
            End If
 
        End Sub

CODE examples would be really nice right now

[wossname]

How about declaring the Thread object OUTSIDE the subs (ie in the declarations section)?

Then you can access it from anywhere.

[carlblanchard]

HOW ??? Sorry this is first things ive done with threading

[wossname]

Dim MyThread As Thread = New Thread(AddressOf runProg)
 
'the other function minus the original thread declaration
'goes here
 
Private Sub MainApp_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
            Dim result As MsgBoxResult = MsgBox("There are still ......", MsgBoxStyle.YesNo, "Input")
 
            If result = MsgBoxResult.Yes Then
                RunFilter()
            Else
                MyThread.Abort()
            End If
 
        End Sub

[carlblanchard]

Yeah done that but the application still seems to be running in my task manager. if it the case that the thread will wait until its run or will it quit stright away ????

[carlblanchard]

Ive checked the state of the thread and it keeps coming back as unstarted ???any ideas ?

[pax]

Hi.

If the thread is running a loop, then abort won't close it down. At least, that's my experience.

What I usually do, is use a public boolean.

Then in I would make the loop like this:

While Not MyAbort
    'do things here
End While

Then, to stop the thread I would just set the MyAbort=True.
The loop will exit, and the thread will terminate.

This usually works for me.