I am designing a custom component (Non visible componenent). I inherited my class from System.ComponentModel.Component class. I know Component implements IDisposable. But how could I release resources used by my control ? Component class doesn't allow overriding Dispose. So how to dispose the objects used in my custom control ? Do I need to implement IComponent directly in my custom control instead of inheriting it from Component class ?
Thanks
Navaneeth Friday, April 11, 2008 1:50 PM
Like below; basically, there is a pattern that IDisposable and finalizer (~Foo) share an implementation; the bool parameter tells you which it is... so you should only normally do your code in the "true" case (unless you are touching unmanaged resources):
Code Snippet
class
Foo : Component
{
protected override void Dispose(bool disposing)
{
if (disposing)
{
// your code
}
base.Dispose(disposing);
}
}
Marc Gravell Friday, April 11, 2008 1:55 PM
Like below; basically, there is a pattern that IDisposable and finalizer (~Foo) share an implementation; the bool parameter tells you which it is... so you should only normally do your code in the "true" case (unless you are touching unmanaged resources):
Code Snippet
class
Foo : Component
{
protected override void Dispose(bool disposing)
{
if (disposing)
{
// your code
}
base.Dispose(disposing);
}
}
Marc Gravell Friday, April 11, 2008 1:55 PM
Thanks Marc, But Component class won't allow to override Dispose(), or am I missing something ?
Navaneeth Friday, April 11, 2008 1:57 PM
Code Snippet
class Foo :Component , IDisposable
{
protected override void Dispose(bool disposing)
{
if (disposing)
{
// your code
}
base.Dispose(disposing);
}
new public void Dispose()
{
base.Dispose();
}
}
David M Morton Friday, April 11, 2008 2:06 PM
But it will allow you to override Dispose(bool disposing)... i.e. what I posted. Does this not compile for you? Works fine here...
(what version of .NET are you using?)
Marc Gravell Friday, April 11, 2008 2:06 PM
Hi,
Thanks. Your code compiled correctly. I haven't noticed it. When I given the override, VS shows the intelisence in which Dispose(bool) was not listed. This was the confusion. Anyway thanks for solving that.
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