473,834 Members | 1,860 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

'System.ObjectD isposedExceptio n' : Cannot access a disposed object

In theory there is nothing wrong with the Windows Forms part of your application (using your code as a start I mocked up the app and can happily press the connect and disconnect buttons ad-infinitum). So can you put a try catch handler in the Disconnect_Clic k handler to trap the exception so you can, say, write the exception yttace out to a file. You need to know which obejct is generating the exception, whether it is one of your Windows Forms objects or something in your remoting setup that we can't see.

The problem originates from an object having a method called or property accessed after IDisposable.Dis pose has been called on it but which object that is and who is oding the accessing is what you need to find out.


Richard Blewett - DevelopMentor

Hi gurus!!!

I have a winform Application that starts with a Connection Form and then instanciates the Main Form.
When closing the main form by clicking the famous top right cross, it works fine but when i use the disconnect button (to go back to the connection form),
i have the exception System.ObjectDi sposedException : Cannot access a disposed object.

I have read that it has a relation with the GC and/or the Dispose method but i'm a beginner in .net and i don't really understand the real problem.

If somebody has an idea to help me, it would be great!!!!

Thx a lot
Nov 16 '05 #1
0 3789

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

by: MJB | last post by:
I'm getting an IStream back from function xmlHttp.responsestream. I would like to convert this to a System.IO.Stream in order to work with it in my application. Has anyone encountered this and written a conversion? TIA, Matt
by: Asaf | last post by:
Hi, When I am doing a POST to a SSL URL I am getting this error on first attempt "Cannot access a disposed object named "System.Net.TlsStream"." After the first attempt all works fine, here is the Stack Trace at System.Net.TlsStream.InnerWrite(Boolean async, Byte buffer, Int32 offset, Int32 size, AsyncCallback asyncCallback, Object asyncState) at System.Net.TlsStream.BeginWrite(Byte buffer, Int32 offset, Int32 size, AsyncCallback...
by: theinvisibleGhost | last post by:
I'm having a problem that occurs at random in my app. I get an exception "Cannot Access a disposed object" In MSCorLib when calling boolean Change (int32, int32) Stack trace reveals System.Threading.Timer.Change(Int32, int32) at Systems.Timers.UpdateTimer() at System.Timers.Timer.set_Interval(double value)
by: Naveen | last post by:
Hello all, Environment - Winforms app calling into a webservice Exception returned - "A first chance exception of type 'System.ObjectDisposedException' occurred in system.dll" Additional information: Cannot access a disposed object named "System.Net.Sockets.NetworkStream". We are making a webmethod call that gets back a simple ID
by: SharpCoderMP | last post by:
i've been experiencing random crashes on some machines running my app. the app never crashed in such way on my dev machine so i'm totally unable to debug this. the error page users get says nothing special: EventType : clr20r3 P1 : app.exe P2 : P3 : 24 P4 : app P5 : P6 : 24 P7 : 11d P8 : 0 P9 : system.nullreferenceexception
by: Martin Pöpping | last post by:
Hello, I´ve a problem with a small line of code. For my Windows Application I designed a form for exporting data into xml files. I´m opening the dialog with: ExportDialog export = new ExportDialog(); export.Show();
by: =?Utf-8?B?cmVk?= | last post by:
Hi Friends, We recently deployed our application to production and I am experiencing the below error message. Cannot access a disposed object named "System.Net.TlsStream" The error occurs when we are making a web service call to an external system (within our corporate n/w). The method is POST and the URL is over HTTPS.
by: sdanda | last post by:
Hai i am working on vb.net. In my application I created four forms.Those are first.vb,f1.vb,f2.vb and f3.vb In firstvb I added 3 checkboxes and a "display" button.The 3 checkboxes are used to display the forms f1,f2 and f3.If first checkbox is checked then it displays the f1 form.Similarly for f2 and f3 also.I kept all this code in the display button click event.In f1.vb,f2.vb and f3.vb I added back and next buttons. I wrote some code to...
by: Brian | last post by:
Hello all. I have a simple application that I was using to test and understand the System.Timers.Timer and noticed that when I stop the application, on occasion, it throughs the following exception. An exception of type 'System.ObjectDisposedException' occurred in System.Windows.Forms.dll but was not handled in user code Additional information: Cannot access a disposed object.
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development projectplanning, coding, testing, and deploymentwithout human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupr who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.