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Questions tagged [dispose]

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources

Microsoft.NET

The pattern for disposing an object, referred to as a dispose pattern, imposes order on the lifetime of an object. The dispose pattern is used only for objects that access unmanaged resources. This is because the garbage collector is very efficient at reclaiming unused managed objects.

A type's Dispose method should release all the resources that it owns. It should also release all resources owned by its base types by calling its parent type's Dispose method. The parent type's Dispose method should release all resources that it owns and in turn call its parent type's Dispose method, propagating this pattern through the hierarchy of base types.

Reference

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Do you need to dispose of objects and set them to null?

Do you need to dispose of objects and set them to null, or will the garbage collector clean them up when they go out of scope?
CJ7
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Finalize vs Dispose

Why do some people use the Finalize method over the Dispose method? In what situations would you use the Finalize method over the Dispose method and vice versa?
tush1r
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returning in the middle of a using block

Something like: using (IDisposable disposable = GetSomeDisposable()) { //..... //...... return Stg(); } I believe it is not a proper place for a return statement, is it?
tafa
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Should I Dispose() DataSet and DataTable?

DataSet and DataTable both implement IDisposable, so, by conventional best practices, I should call their Dispose() methods. However, from what I've read so far, DataSet and DataTable don't actually have any unmanaged resources, so Dispose() doesn't…
mbeckish
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Will the Garbage Collector call IDisposable.Dispose for me?

The .NET IDisposable Pattern implies that if you write a finalizer, and implement IDisposable, that your finalizer needs to explicitly call Dispose. This is logical, and is what I've always done in the rare situations where a finalizer is…
Orion Edwards
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How do you prevent IDisposable from spreading to all your classes?

Start with these simple classes... Let's say I have a simple set of classes like this: class Bus { Driver busDriver = new Driver(); } class Driver { Shoe[] shoes = { new Shoe(), new Shoe() }; } class Shoe { Shoelace lace = new…
GrahamS
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Is there any way to close a StreamWriter without closing its BaseStream?

My root problem is that when using calls Dispose on a StreamWriter, it also disposes the BaseStream (same problem with Close). I have a workaround for this, but as you can see, it involves copying the stream. Is there any way to do this without…
Binary Worrier
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Disposing WPF User Controls

I have created a custom WPF user control which is intended to be used by a third party. My control has a private member which is disposable, and I would like to ensure that its dispose method will always get called once the containing…
Mark Heath
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Is it considered acceptable to not call Dispose() on a TPL Task object?

I want to trigger a task to run on a background thread. I don't want to wait on the tasks completion. In .net 3.5 I would have done this: ThreadPool.QueueUserWorkItem(d => { DoSomething(); }); In .net 4 the TPL is the suggested way. The common…
Simon P Stevens
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What happens if i return before the end of using statement? Will the dispose be called?

I've the following code using(MemoryStream ms = new MemoryStream()) { //code return 0; } The dispose() method is called at the end of using statement braces } right? Since I return before the end of the using statement, will the…
NLV
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What is the difference between using IDisposable vs a destructor in C#?

When would I implement IDispose on a class as opposed to a destructor? I read this article, but I'm still missing the point. My assumption is that if I implement IDispose on an object, I can explicitly 'destruct' it as opposed to waiting for the…
Jordan Parmer
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How to check if object has been disposed in C#

Possible Duplicate: How does one tell if an IDisposable object reference is disposed? Is there a method to check if object has been disposed different then try { myObj.CallRandomMethod(); } catch (ObjectDisposedException e) { // now I…
jethro
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How does one tell if an IDisposable object reference is disposed?

Is there a method, or some other light-weight way, to check if a reference is to a disposed object? P.S. - This is just a curiousity (sleep well, not in production code). Yes, I know I can catch the ObjectDisposedException upon trying to access a…
Neil C. Obremski
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Difference between destructor, dispose and finalize method

I am studying how garbage collector works in c#. I am confused over the use of Destructor, Dispose and Finalize methods. As per my research and understandings, having a Destructor method within my class will tell the garbage collector to perform…
Victor Mukherjee
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Do I need to consider disposing of any IEnumerable I use?

It's recently been pointed out to me that various Linq extension methods (such as Where, Select, etc) return an IEnumerable that also happens to be IDisposable. The following evaluates to True new int[2] {0,1}.Select(x => x*2) is IDisposable Do…
Rob
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