.net - Closing Main Form Doesn't Finish Process In Windows 7?

Feb 23, 2011

I have an MDI form as the app start object.I don't think is related, but in the Form closing event, I check for some condition, and if it's true, I ask for confirmation before closing:

Private Sub FormBackground_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
If (e.CloseReason = CloseReason.UserClosing) Then[code].....

So long, everything works fine in my development machine, which runs windows XP.However, when deploying the application in a windows 7 machine, the message box works correctly, showing itself whenever it should, but after the form is closed the application keeps running in the background. This happens whether the form closes directly or asks the user first.I have fixed it putting an End instruction in the FormBackground.FormClosed event, but it doesn't feel good.

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Jun 4, 2010

Dim frm As Form
For Each frm In Forms
Set frm = Nothing
Next frm

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I have seen info on using the Project Property Shutdown mode When startup form closes and I currently have this set.

Is this all that is really necessary? Will the garbage disposal close everything else to free up RAM?

Also, if I have several forms open and want to close all from the main form without closing each one individually, what is the best approach? Is there a collection like in VB6, go through the collection, compare it to the name of the main form and close it if it is not the main form?

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I am trying to use a progressbar to show on main form and then finish when next form is loaded, I have got this code.

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Main form code:

Public Class Main

Dim PB As ProgressBar

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[CODE]............................

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[Code].....

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If I open and close the Excel application, there is no process Excel.exe, but if I run my code with the Excel application openned, after the user close the Excel application, the process Excel.exe isn't finished.

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Apr 3, 2009

Ok i have a login window which connects to a MySQL database and authenticates the user. Works perfect, BUT

If rowsEffected > 0 Then
cnMySQL.Close()
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MainForm.Show()
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cnMySQL.Close()
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That's supposed to close the login form and open the main form if the query returned a positive match of the login information. The login works, closes the login form, opens the main form, than mysteriously exits the application. I'm guessing its something simple but i don't see it .. the main form has nothing in it besides some inputs and labels no subs at all and if i change the form which the program starts to to the main form it runs as designed.

I know usually if you start your program from a module and use Application.Run() you can keep the thread open, but this is all forms no background work so i didn't want to go that direction.P.S. i just removed LoginForm1.Close() and it logs me in fine and opens the main form fine and keeps the app running but the login form is still open.

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[code]....

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I have created a splash screen and it fades in. When the splash screen closes, the main form (MDI) should open. The main form opens but then immediately closes.
vb
Public Class frmSplash
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[Code] .....

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Me.Close()
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[Code]...

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[code]....

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[Code]....

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Private WithEvents m_frmLineItems As frmLineItems
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[code].....

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