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Cannot Access A Disposed Object Named Servicedcomponent

I could be wrong, but I don't think there is a problem with calling the MyBase.Dispose() method last, although it may interfere with GC.SuppressFinalize. First, note that every managed client is built against a particular version of the assembly that contains the components - whether these components are serviced or just regular components. I also changed the sequence of execution. You posted a solution, instead of comment. navigate here

Reply pkr Member 81 Points 1860 Posts Re: Getting Error "Cannot Access A Disposed Object" Aug 23, 2004 12:34 PM|pkr|LINK You have to be careful with you derive from an object If so, there may be a reason why you can't / shouldn't call the Dispose() method on a ServicedComponent. Calls to instances of classes not derived from ServicedComponent are not intercepted at COM+ context boundaries. Like COM, .NET does not provide its component services, but relies on COM+ to provide services such as object pooling, transactions, activity-based synchronization, role-based security, disconnected asynchronous queued components and loosely-coupled

Object name: 'System.Net.Sockets.TcpClient'. If pooling is used but not JITA, Dispose() calls Deactivate to notify the object that it will be leaving its context. Abort all operations performed on ob1, ob2, and ob3 txCtx.Abort(); } } Note how the client decides whether to commit or abort the transaction based on whether an exception up vote 20 down vote favorite 1 In a VB.NET WinForms project I get an exception Cannot access a disposed object when closing a form.

COM+ Transactions and Non-Serviced Components Web Services & Transactions Web Service classes derive from WebService class (defined in System.Web.Services) . and the component is given a new CLSID. Because .NET garbage collection is non-deterministic (i.e., we do not know when it will happen), there could be a significant delay between the time the object is no longer needed by Does the error go away when you comment out that line?

Thanks, IM Quote: quote:Originally posted by Imar Hmmm weird. The TransactionContext object acts as the middleman between the client and its objects. It is very important to understand that integrating COM+ with the CLR is not achieved through COM interoperability alone. 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

Depalindromize this string! Also not that a class's public methods do not appear in the COM+ catalog. asked 8 years ago viewed 114938 times active 2 months ago Related 832How to update the GUI from another thread in C#?1345What is a NullReferenceException, and how do I fix it?4Cannot Library applications need to run in their creator's process space.

The problemwith this is that clicking button 3 once will reduce my "objects"column from 2 to 1, but clicking it a second time gives me thefollwing error:An unhandled exception of type https://tycedy862.wordpress.com/2015/01/13/cannot-access-a-disposed-object-named-servicedcomponent/ At some point, the doneness bit must be set to true. The benefits of this approach is that it reduces interception overhead by ensuring that calls will be pre-processed and post-processed only when necessary. The Objects statistic means the number of stubs clientshold, but why doesn't the number of stubs decrease for eachdisposeobject call??

Server applications have their own dedicated process called dllhost.exe. http://mediastartpage.com/cannot-access/cannot-access-a-disposed-object-named-crystalreportviewer.html Programmatic registration using a .NET class. We then store these objects in the ASP Session objects so that state information in these objects can be propagated from one page to the next (or when the same page Reconfiguring an existing version is done via the /reconfig switch: regsvcs.exe /reconfig /fc MyApp MyAssembly.dll The /reconfig switch causes RegSvcs.exe to reapply any application, component, interface and method attributes found in

Also note that serviced components do not use HRESULT codes but rather use exceptions for error handling using the try-catch-finally blocks: // Component definition public interface IMyInterface { void foo(); The default is that a different build (Y) or revision (Z) number do not indicate compatibility, but a difference in either major (W) or minor (X) number does indicate incompatibility. As mentioned previously, the name of the COM+ application is extracted from the assembly-level attribute ApplicationName, the assembly name, or the supplied application name/GUID. his comment is here For several reasons we are creating these objects from ASP 6 (i.e, not ASP.NET pages), using the classical COM interface (e.g., Server.CreateObject).

If Not _formIsClosing Then _timer.Interval = _refreshInterval _timer.Start() ' ObjectDisposedException() is thrown here unless you check the _formIsClosing flag. How small could an animal be before it is consciously aware of the effects of quantum mechanics? Existing managed clients do not interfere with one another because each will use the assembly that it was compiled against.

Code: Public Overloads Sub Dispose() If m_bDisposed = False Then Try 'Free up the database connection resource by 'calling its Dispose method m_objConn.Dispose() Finally 'Because this Dispose method has done the

f.NET Serviced Components Summary Introduction Quick Review of COM+ Developing Serviced Components Registering Serviced Components Configuring Serviced Component Development Complexities Introduction COM provides one way of writing components, and it is Everyone uses the factory to get their hands on the object, but can still leverage the using construct naturally. If that version is not registered yet, RegSvcs.exe will add a new version and assign a new CLSID. I never said it was extraneous, BTW.

Now the error is gone. Disabling it for this pipeline resolved the error being created. I used regsvcs.exe on the .dll andput the .dll in the GAC. weblink Posts: 16,833 Thanks: 79 Thanked 1,537 Times in 1,514 Posts Hi there, I don't have the book, or the code, so I can't really tell, but isn't it possible that the

Is this what you're looking for? Registering Serviced Components later in this chapter describes this process. Dispose() is a method defined in ServicedComponent class and in-turn calls Dispose(true), the class finalizer if one exists, and then it tears down the COM+ context. The actions in Application A that seem to trigger this seem to have nothing to do with the objects in Application B (although they have the same base class).

Else, the object's finalizer is called (it will not be called again when the GC collects memory). Terms of Service Layout: fixed | fluid CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100 Blog Sign in Join ASP.NET Home Get Started Learn Hosting Downloads GBiz is too! Latest News Stories: Docker 1.0Heartbleed Redux: Another Gaping Wound in Web Encryption UncoveredThe Next Circle of Hell: Unpatchable SystemsGit 2.0.0 ReleasedThe Linux Foundation Announces Core Infrastructure Classes that are marked with declarative attributes and use COM+ classes are called configured classes.

Check out the MSDN docs about SuppressFinalize for more info (if there is any). Remove it, I added it's content to the original question. As for JITA, deactivating the object at the end of each method does not really resolve the resource management issue. share|improve this answer edited Apr 8 '15 at 3:33 answered Aug 27 '08 at 6:48 On Freund 3,77721324 If you have a new question, please ask it by clicking

This isas expected. You can read messages from the Advanced DOTNET archive, unsubscribe from Advanced DOTNET, or subscribe to other DevelopMentor lists at http://discuss.develop.com. Calltime ismeasured at the object and does not include the time used totraverse the network.My problem is with the Objects Column.Basically if I click button 1 on my form to instantiate Imar #4 (permalink) June 11th, 2003, 05:17 PM Imar Wrox Author Points: 70,528, Level: 100 Activity: 100% Join Date: Jun 2003 Location: Utrecht, Netherlands.

Recall that COM+ implements its services via interception and objects interact with the services they are using via the context object. When I test if my session variable is still a valid refrence (i.e, not nothing and IsObject()), everything is fine- but as soon as I access a method or property I Most of these issues arise because the CLR is not COM and the CLR can do things that COM cannot. If so, and pooling is available, then you should be releasing those connections as fast as possible, rather than holding onto them.

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