mastiSoft
asked on
memory problems
I have a main window in my project, and numerous other child widows inside the main.
When I open the one child main window occupies some memory, i can see it in task manager.
When I close the child window the occupied memory is not released.
I used:
Private Sub MainForm_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormC
GC.Collect()
Me.Dispose()
end sub
But this is not works.
Please can anyone give me some idea how to resolve this.
When I open the one child main window occupies some memory, i can see it in task manager.
When I close the child window the occupied memory is not released.
I used:
Private Sub MainForm_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormC
GC.Collect()
Me.Dispose()
end sub
But this is not works.
Please can anyone give me some idea how to resolve this.
Pramod Bugudai
Hi. Instead of using Me.Dispose, why don't you use Me.Close(). This is a best way to do over Dispose().
I would declare an event in a common place such as a module
Private Sub Form_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormC
Sender = Nothing
GC.Collect()
End Sub
Then wherever I declare a form,
Dim f as new someform
AddHandler f.FormClosed, AddressOf Form_FormClosed
f.show
Private Sub Form_FormClosed(ByVal sender As Object, ByVal e As System.Windows.Forms.FormC
Sender = Nothing
GC.Collect()
End Sub
Then wherever I declare a form,
Dim f as new someform
AddHandler f.FormClosed, AddressOf Form_FormClosed
f.show
ASKER
if I use Me.Close then I get:An unhandled exception of type 'System.StackOverflowExcep
this is MDI application and I need to clean memory when child form close.
to load a new form I use
AktivForm = New MainForm
'New Form Creater & Show
AktivForm.MdiParent = Me
'AktivForm.Tag = m_ChildFormNumber
AktivForm.Text = My.Computer.FileSystem.Get
AktivForm.Show()
This is from MDIParent.
Then when a child form close then i use Private Sub MainForm_FormClosed(...
Where I have to use your suggestion mr.CodeCruiser
this is MDI application and I need to clean memory when child form close.
to load a new form I use
AktivForm = New MainForm
'New Form Creater & Show
AktivForm.MdiParent = Me
'AktivForm.Tag = m_ChildFormNumber
AktivForm.Text = My.Computer.FileSystem.Get
AktivForm.Show()
This is from MDIParent.
Then when a child form close then i use Private Sub MainForm_FormClosed(...
Where I have to use your suggestion mr.CodeCruiser
>Where I have to use your suggestion mr.CodeCruiser
>Then when a child form close then i use Private Sub MainForm_FormClosed(...
Why would you call Close on a form which is already closing???
GC.Collect removes objects that have no more references left. When you call it from within the form, the form is still being referenced. Call GC.Collect from the calling location which is MDI form. As I have shown, use an event handler on the mdi form which handles the closing event of ALL child forms. Then call GC.Collect in that event handler.
>Then when a child form close then i use Private Sub MainForm_FormClosed(...
Why would you call Close on a form which is already closing???
GC.Collect removes objects that have no more references left. When you call it from within the form, the form is still being referenced. Call GC.Collect from the calling location which is MDI form. As I have shown, use an event handler on the mdi form which handles the closing event of ALL child forms. Then call GC.Collect in that event handler.
ASKER
I add the module as you suggested.
and line AddHandler f.FormClosed, AddressOf Form_FormClosed before show child form.
Nothing change,
Why I need this:
Before opening the child form Task Manager show that the application use let say 6000 k
When child form opens this value increase to 9000 k. If I close this form then it still 9000k.
Opening several files(forms) this amount just be bigger and at the some moment application just hangs.
and line AddHandler f.FormClosed, AddressOf Form_FormClosed before show child form.
Nothing change,
Why I need this:
Before opening the child form Task Manager show that the application use let say 6000 k
When child form opens this value increase to 9000 k. If I close this form then it still 9000k.
Opening several files(forms) this amount just be bigger and at the some moment application just hangs.
>Why I need this
To remove the reference of the form.
Show us the relevant complete code that you have now.
To remove the reference of the form.
Show us the relevant complete code that you have now.
ASKER CERTIFIED SOLUTION
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