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Cannot Access Disposed Object Vb.net

If it didn't work for you then you didn't do it properly. I don't see a need for it to be declared at the Module level the way you have it now, so I think you should leave the declaration within the procedure. Treat my content as plain text, not as HTML Preview 0 … Existing Members Sign in to your account ...or Join us Download, Vote, Comment, Publish. When i click a button another form is made at runtime and opens, if i close the form and click the button to open the form again i get this error: his comment is here

Assigning a unique representation to equivalent circular queues more hot questions question feed lang-vb about us tour help blog chat data legal privacy policy work here advertising info mobile contact us You're trying to solve the wrong problem. You can also check it on the FormClosing event, assuming you're using the FormClosed event. if the batch process means processing multiple drawing files, you would want to set CommandFlags.Session flag in your command method and you certainly want to use a singleton modeless form. http://stackoverflow.com/questions/16355612/cannot-access-a-disposed-object-in-instance-vb-net

Advanced Search VBForums Visual Basic Visual Basic .NET VS 2008 Cannot access a disposed object. Related 1Problem in saving image to database from picturebox. Because conflict of declaration with release. This code really belongs in the MDI parent, but you can limp along with this: Get If anInstance Is Nothing Then anInstance = New frmDaftarBarang Else If anInstance.WindowState = FormWindowState.Minimized Then

Object name: 'Form'. TS1 is declared at the very top of the page, Sorry but i don't understand exactly what you meen. and what am I dealing with here? BaseForm                a) CloseForm Function - call MainForm.CloseForm 3.

It's a really annoying problem because if someone did come up with a solution that worked - I wouldn't be able to confirm the solution because I cannot recreate the problem Hypothesis: Maybe you have a main thread and a timer thread accessing this control. Object name: 'Form'. http://stackoverflow.com/questions/24810050/cannot-access-disposed-form-despite-creating-it-immediately-prior Objectname: 'frmBatchProcess'.

It is completely not necessary to testIf myForm.IsDisposed Then...because the form is just created (unless you have complicated code in the form constructor that may dispose itself due to some initializing at System.Windows.Forms.Control.CreateHandle() at System.Windows.Forms.Control.get_Handle() at System.Windows.Forms.Control.PointToScreen(Point p) at Dbi.WinControl.Schedule.dbiSchedule.a(Boolean A_0) at Dbi.WinControl.Schedule.dbiSchedule.a(Object A_0, EventArgs A_1) at System.Windows.Forms.Timer.OnTick(EventArgs e) at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) The When as modelsss form, calling Form.Close() or clicking "x" on the form, actually disposes the form (truly closed), while whne bing shown as modal form (dialog box, usually), calling Form.Close()/clicking "x" Wednesday, April 25, 2007 10:19 AM Reply | Quote 0 Sign in to vote  Khin wrote: thanks for reply.

Each time you close a form, it is disposed, data shown on the form is lost. My Goal: 1. Code: Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click Tickets() End Sub Thanks Reply With Quote Jun 29th, 2012,07:22 AM #6 jmcilhinney View Profile View Forum Posts Why?

so is needed to call dispose() to clear all the memory. this content I close the message form at the end, and exit the module. Would you like to answer one of these unanswered questions instead? Wednesday, April 25, 2007 10:10 AM Reply | Quote 0 Sign in to vote thanks for reply.

You can prevent the closing of a form at run time by handling the Closing event and setting the Cancel property of the CancelEventArgs passed as a parameter to your event Join them; it only takes a minute: Sign up Cannot access a disposed object in instance VB.net up vote 0 down vote favorite i have problem with my project, i have Rate this: Please Sign up or sign in to vote. http://mediastartpage.com/cannot-access/cannot-access-a-disposed-object-object-name-system-net-sockets-socket.html We do stop the Timer on the FormClosing event and we do check the IsDisposed property on the schedule component before using it in the Timer Tick event but it doesn't

Your code alos has the potential risk of shown mutiple forms with different data from drawing when calling your command method more than once against the same document in different time, but just ignore its in my program, will cause any problems or issues? Thoughts?I thought if I was using "new" then it was being instantiated as new every time?

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Originally Posted by jmcilhinney This is a variable declaration: vb.net Code: Dim var As SomeType This is declaring a variable, creating a new object and assigning it to the variable: vb.net Go to Solution. lowercase breadcrumbs Why did the best potions master have greasy hair? Your Email This email is in use.

can you explain more about this?    Matt_Fomich wrote:   Like rkimble has said, you don't need to call dispose after close.  Just call close.   as i know, ya If you never reference the sender, or the event arguments, then you should not have any problems calling Form_Load, instead of Form.Show.  Here are some things you can't do:   Private Do you need your password? check over here Reply 0 Kudos « Message Listing « Previous Topic Next Topic » Search This Board CommunityCategoryBoardArticlesUsers turn on suggestions Auto-suggest helps you

When as modelsss form, calling Form.Close() or clicking "x" on the form, actually disposes the form (truly closed), while whne bing shown as modal form (dialog box, usually), calling Form.Close()/clicking "x" An MDI child form can be created more than once, you will have to set the singleton instance back to Nothing when it gets destroyed. Today's Topics Dream.In.Code > Programming Help > VB.NET Cannot Access a Disposed Object Page 1 of 1 New Topic/Question Reply 2 Replies - 5953 Views - Last Post: 31 May 2010 It all works fine, just the problem is if the user closes the form and then click the button to reopen it then it throws the error.

Mysterious creeper-like explosions n-dimensional circles! Another thing that seems unlikely is if your forms are fairly complex has someone overridden the "show" routine maybe to try to do some kind of singleton form and is messing Application Lifecycle> Running a Business Sales / Marketing Collaboration / Beta Testing Work Issues Design and Architecture ASP.NET JavaScript C / C++ / MFC> ATL / WTL / STL Managed C++/CLI Where is TS1 declared?

At the end, creating this sub routine in a new button from the tool box fixed the problem. 0 Kudos Message 3 of 3 (1,692 Views) Reply 0 Kudos All Forum

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