CODEWITHSUNDEEP
c#wpfc#-4.0
Guy
Guy

Reputation: 336

DependencyProperty Memory leak

I am using PerfView in order to discover memory leaks.

After comparing between two snapshot I noticed that under the tab RefTree -> static vars in PerView. MyPageDependencyProperty of mine takes 78.9% of the Inc%.

The MyPageDependencyProperty should not be there because I closed the the xaml window it is belong to.

I don't use AddValueChanged which can cause memory leak.

The DependencyProperty reveals ObservableCollection<object>.

Does anyone know can I solve this issue?

thanks

Upvotes: 4

Views: 3242

Answers (2)

dev hedgehog
dev hedgehog

Reputation: 8801

Instead of defining your property like this which creates a static ObservableCollection.

public static readonly DependencyProperty SomePropertyProperty  = DependencyProperty.Register(typeof(..), typeof(..),....,.... , new ObservableCollection<...>());

You should do this:

public static readonly DependencyProperty SomePropertyProperty = DependencyProperty.Register(typeof(..), typeof(..),...., null);

public MyControl()
{
   this.SomeProperty = new ObservableCollection<...>();
}

And your issue will disappear magically. :)

Upvotes: 5

user2604650
user2604650

Reputation:

This may be because of CLR has the links to the object somewhere and it doesn't Dispose. Try to force Garbage collector to run and track what will happen.

Upvotes: -3

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