[RESOLVED] Trying to exit the program dynamically, but the underlying process continues running

[BMAN645]

[VS 2010 / Winforms]

Hey guys,

I've got a very simple project that only has 1 form. On form load, I am calling a custom function (in an external module) which checks to see if a specific condition is true (based on user's computer configuration).

If the condition is not true, then I need to exit the program right away. So I am calling MyBase.Close() if the condition is not true.

This successfully closes the GUI part of the program, but the underlying process is still running. And then every time I open/close the program again, it adds a new process (ie if I open and close the program 5 times, then there are 5 separate processes running).

Is there something else I need to call in addition to MyBase.Close() in order to kill everything? I also tried adding MyBase.Dispose() before MyBase.Close(), but that didn't make any difference.

This is my code for the form load...

Public Class Form1

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

        Dim Result As Boolean = TestFunction(Result)

        If Result = False Then
            MyBase.Close()
        End If

    End Sub

End Class

My actual code for the custom function is a bit complex, but I made a minimum test case which has the same result (the underlying process never dies)...

Module Test

    Function TestFunction(ByVal Result As Boolean)

        Dim MsgBx As DialogResult = MessageBox.Show("Test", "Test", MessageBoxButtons.OKCancel)

        If MsgBx = DialogResult.OK Then
            Return True
        Else
            Return False
        End If

    End Function

End Module

If you run the above code, and then click the 'Cancel' button every time the message box pops up, it closes the GUI, but the process continues running in the background.

How can I fix this?

Thanks!

[ident]

Application.Exit

[ident]

Public Class Form1
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        If PromptForClose() Then
            Application.Exit()
        End If
    End Sub
End Class
 
Module Test
 
    Friend Function PromptForClose() As Boolean
        Dim message As String = "Would you like to close the application?"
        Dim result As DialogResult = MessageBox.Show(message,
                                                     Application.ProductName,
                                                     MessageBoxButtons.OKCancel,
                                                     MessageBoxIcon.Question,
                                                     MessageBoxDefaultButton.Button1)
        Return result = DialogResult.OK
    End Function
 
End Module

[dolot]

Here's a recent thread where the issue of 'how to end an application' gets discussed some:

http://www.vbforums.com/showthread.p...ght=abruptness

[ident]

Here's a recent thread where the issue of 'how to end an application' gets discussed some:

http://www.vbforums.com/showthread.p...ght=abruptness

Thats not relevant at all to this thread.

[dolot]

Thats not relevant at all to this thread.

I thought post #5 was.

[BMAN645]

Wow... so simple.

Thanks ident!

[dbasnett]

[VS 2010 / Winforms]... If you run the above code, and then click the 'Cancel' button every time the message box pops up, it closes the GUI, but the process continues running in the background.

How can I fix this?

Thanks!

I ran this

Public Class Form1
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        If TestFunction() = Windows.Forms.DialogResult.Cancel Then
            Me.Close()
        End If
    End Sub
End Class

Module Test
    Function TestFunction() As DialogResult
        Return MessageBox.Show("Test", "Test", MessageBoxButtons.OKCancel)
    End Function
End Module

It seemed to work as expected.