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Home / Community & Support / Developer Productivity Tools Forums / SilverlightNavigationMemory slowly climbs between navigation

Not answered Memory slowly climbs between navigation

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John Morris

Posted on Sep 23, 2009 (permalink)

Is there a best practice for disposing of a previous RadPage and its resources when using Navigate()? I have two pages, one with a grid (page 1), the other with a radnumericupdown (page 2). As I navigate from page 1 to page 2, the memory stays the same but going back to page 1, it increases. I've tried setting the grid's itemsource to null and actually setting the RadPage to null after calling Navigate(). Both seemed to help a little but it still increases each time.

more info... After running the following code from page 1:

service.Navigate(new page 2());
RadPage currentPage = this as RadPage;
currentPage = null;

I still have the page 1 grid in the heap and WinDb's !gcroot reveals:

0:028> !gcroot 093b03a0
Note: Roots found on stacks may be false positives. Run "!help gcroot" for
more info.
Scan Thread 5 OSTHread 1780
Scan Thread 24 OSTHread fc0
Scan Thread 25 OSTHread 166c
Scan Thread 8 OSTHread e8c
Scan Thread 17 OSTHread 1068
Scan Thread 26 OSTHread 1620
Scan Thread 27 OSTHread 1618
DOMAIN(068438B8):HANDLE(Strong):2731104:Root: 093af99c(System.Windows.Style)->
093af9e0(System.Collections.Generic.Dictionary`2[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]])->
093afa28(System.Collections.Generic.Dictionary`2+Entry[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]][])->
093af944(System.Windows.SetterBaseCollection)->
093afa64(System.Collections.Generic.Dictionary`2[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]])->
093afaac(System.Collections.Generic.Dictionary`2+Entry[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]][])->
093af7f8(System.Windows.Setter)->
093af83c(System.Collections.Generic.Dictionary`2[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]])->
093af884(System.Collections.Generic.Dictionary`2+Entry[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]][])->
093af8c0(System.Collections.Generic.Dictionary`2[[System.UInt32, mscorlib],[System.Windows.DependencyObject, System.Windows]])->
093af908(System.Collections.Generic.Dictionary`2+Entry[[System.UInt32, mscorlib],[System.Windows.DependencyObject, System.Windows]][])->
093af758(System.Windows.Controls.ControlTemplate)->
093af0e4(NBA5.Reports)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):273118c:Root: 093af5a0(System.Windows.ResourceDictionary)->
093af0e4(NBA5.Reports)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):27311a4:Root: 0940ebec(System.Windows.Controls.Button)->
0940f830(System.Windows.RoutedEventHandler)->
093ec050(Telerik.Windows.Controls.GridView.FilteringDropDown)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):27311c8:Root: 093b2dbc(Telerik.Windows.Controls.RadComboBoxItem)->
093b1d64(Telerik.Windows.Controls.RadComboBox)->
093b3bdc(System.Windows.Controls.StackPanel)->
093b1c78(System.Windows.Controls.Grid)->
093b1cd0(System.Collections.Generic.Dictionary`2[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]])->
093b1d18(System.Collections.Generic.Dictionary`2+Entry[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]][])->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):27311d0:Root: 0940ee68(MS.Internal.ManagedObjectReference)->
0940ebec(System.Windows.Controls.Button)->
0940f830(System.Windows.RoutedEventHandler)->
093ec050(Telerik.Windows.Controls.GridView.FilteringDropDown)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):27311e8:Root: 095b1c3c(System.Windows.Controls.ContentPresenter)->
095b1be4(System.Windows.Controls.Grid)->
095b04b0(System.Windows.Controls.Button)->
095b0724(System.Windows.RoutedEventHandler)->
093af0e4(NBA5.Reports)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Pinned):273122c:Root: 093b2eb0(MS.Internal.ManagedObjectReference)->
093b2dbc(Telerik.Windows.Controls.RadComboBoxItem)->
093b1d64(Telerik.Windows.Controls.RadComboBox)->
093b3bdc(System.Windows.Controls.StackPanel)->
093b1c78(System.Windows.Controls.Grid)->
093b1cd0(System.Collections.Generic.Dictionary`2[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]])->
093b1d18(System.Collections.Generic.Dictionary`2+Entry[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]][])->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Pinned):2731268:Root: 095b1be4(System.Windows.Controls.Grid)->
095b04b0(System.Windows.Controls.Button)->
095b0724(System.Windows.RoutedEventHandler)->
093af0e4(NBA5.Reports)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Pinned):273127c:Root: 093b0638(Telerik.Windows.Controls.RowAppearanceSettings)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Pinned):2731298:Root: 093b0728(System.EventHandler)->
093b0714(Telerik.Windows.Controls.GridView.UnloadedEvent)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Pinned):27312b8:Root: 093b082c(MS.Internal.ManagedObjectReference)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Pinned):27312e8:Root: 093b0908(Telerik.Windows.Controls.GridViewTableDefinition)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2731410:Root: 0940c2d8(System.Windows.Controls.StackPanel)->
0940c460(System.Collections.Generic.Dictionary`2[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]])->
0940eab0(System.Collections.Generic.Dictionary`2+Entry[[System.Windows.DependencyObject, System.Windows],[System.Object, mscorlib]][])->
0940e704(System.Windows.Controls.TextBox)->
0940e8cc(System.Windows.DataContextChangedEventHandler)->
0940e860(System.Windows.Data.BindingExpression)->
0940fafc(Telerik.Windows.Data.FieldFilterDescription)->
0940fbb4(Telerik.Windows.Data.RadObservableCollection`1[[Telerik.Windows.Data.FilterDescriptor, Telerik.Windows.Data]])->
0940fd10(System.Collections.Specialized.NotifyCollectionChangedEventHandler)->
0940fcf8(System.Object[])->
0940fcd8(System.Collections.Specialized.NotifyCollectionChangedEventHandler)->
093ec050(Telerik.Windows.Controls.GridView.FilteringDropDown)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2731438:Root: 095b1f20(System.Windows.Controls.TextBlock)->
095b20bc(System.Windows.Controls.Grid)->
095b1c3c(System.Windows.Controls.ContentPresenter)->
095b1be4(System.Windows.Controls.Grid)->
095b04b0(System.Windows.Controls.Button)->
095b0724(System.Windows.RoutedEventHandler)->
093af0e4(NBA5.Reports)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2731458:Root: 093b0eec(Telerik.Windows.Controls.GridViewDataColumn)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):273147c:Root: 0940e704(System.Windows.Controls.TextBox)->
0940e8cc(System.Windows.DataContextChangedEventHandler)->
0940e860(System.Windows.Data.BindingExpression)->
0940fafc(Telerik.Windows.Data.FieldFilterDescription)->
0940fbb4(Telerik.Windows.Data.RadObservableCollection`1[[Telerik.Windows.Data.FilterDescriptor, Telerik.Windows.Data]])->
0940fd10(System.Collections.Specialized.NotifyCollectionChangedEventHandler)->
0940fcf8(System.Object[])->
0940fcd8(System.Collections.Specialized.NotifyCollectionChangedEventHandler)->
093ec050(Telerik.Windows.Controls.GridView.FilteringDropDown)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):27314a0:Root: 095b20bc(System.Windows.Controls.Grid)->
095b1c3c(System.Windows.Controls.ContentPresenter)->
095b1be4(System.Windows.Controls.Grid)->
095b04b0(System.Windows.Controls.Button)->
095b0724(System.Windows.RoutedEventHandler)->
093af0e4(NBA5.Reports)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):27314d8:Root: 093b1100(Telerik.Windows.Controls.GridViewDataColumn)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2736204:Root: 09415760(System.Windows.Controls.Border)->
09415674(System.Windows.Controls.Border)->
09415588(System.Windows.Controls.Grid)->
093ceb34(System.Windows.Controls.Grid)->
093cbd2c(System.Windows.Controls.Primitives.Thumb)->
093cd958(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c38dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cd8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2736210:Root: 09415674(System.Windows.Controls.Border)->
09415588(System.Windows.Controls.Grid)->
093ceb34(System.Windows.Controls.Grid)->
093cbd2c(System.Windows.Controls.Primitives.Thumb)->
093cd958(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c38dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cd8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):273621c:Root: 09415588(System.Windows.Controls.Grid)->
093ceb34(System.Windows.Controls.Grid)->
093cbd2c(System.Windows.Controls.Primitives.Thumb)->
093cd958(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c38dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cd8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2736274:Root: 09415520(System.Windows.Shapes.Rectangle)->
09415038(System.Windows.Controls.Grid)->
093ceacc(System.Windows.Controls.Grid)->
093ca67c(System.Windows.Controls.Primitives.Thumb)->
093cb21c(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c35dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cb8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2736278:Root: 094154b8(System.Windows.Shapes.Rectangle)->
094152fc(System.Windows.Controls.StackPanel)->
09415038(System.Windows.Controls.Grid)->
093ceacc(System.Windows.Controls.Grid)->
093ca67c(System.Windows.Controls.Primitives.Thumb)->
093cb21c(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c35dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cb8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):273627c:Root: 09415450(System.Windows.Shapes.Rectangle)->
094152fc(System.Windows.Controls.StackPanel)->
09415038(System.Windows.Controls.Grid)->
093ceacc(System.Windows.Controls.Grid)->
093ca67c(System.Windows.Controls.Primitives.Thumb)->
093cb21c(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c35dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cb8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2736284:Root: 09415364(System.Windows.Shapes.Rectangle)->
094152fc(System.Windows.Controls.StackPanel)->
09415038(System.Windows.Controls.Grid)->
093ceacc(System.Windows.Controls.Grid)->
093ca67c(System.Windows.Controls.Primitives.Thumb)->
093cb21c(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c35dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cb8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2736294:Root: 094152fc(System.Windows.Controls.StackPanel)->
09415038(System.Windows.Controls.Grid)->
093ceacc(System.Windows.Controls.Grid)->
093ca67c(System.Windows.Controls.Primitives.Thumb)->
093cb21c(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c35dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cb8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):2736298:Root: 09415210(System.Windows.Controls.Border)->
09415124(System.Windows.Controls.Border)->
09415038(System.Windows.Controls.Grid)->
093ceacc(System.Windows.Controls.Grid)->
093ca67c(System.Windows.Controls.Primitives.Thumb)->
093cb21c(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c35dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cb8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):27362a4:Root: 09415124(System.Windows.Controls.Border)->
09415038(System.Windows.Controls.Grid)->
093ceacc(System.Windows.Controls.Grid)->
093ca67c(System.Windows.Controls.Primitives.Thumb)->
093cb21c(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c35dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cb8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->
DOMAIN(068438B8):HANDLE(Strong):27362ac:Root: 09415038(System.Windows.Controls.Grid)->
093ceacc(System.Windows.Controls.Grid)->
093ca67c(System.Windows.Controls.Primitives.Thumb)->
093cb21c(System.Windows.Controls.Primitives.DragCompletedEventHandler)->
093c35dc(System.Windows.Controls.Primitives.ScrollBar)->
093c3cb8(System.Windows.Controls.Primitives.ScrollEventHandler)->
093c2734(Telerik.Windows.Controls.GridView.GridViewScrollViewer)->
093c0c60(Telerik.Windows.Controls.GridView.GridViewItemsControl)->
093b03a0(Telerik.Windows.Controls.RadGridView)->

Reply

Valentin.Stoychev Valentin.Stoychev

Posted on Sep 24, 2009 (permalink)

Hi John Morris,

It is possible that there are memory leaks somewhere left. Did you try your scenario with the SL3 navigation? Basically it is recommended to use the navigation from the framework, because for the moment we don't plan to develop the Telerik page navigation framework anymore.

Kind regards,
Valentin.Stoychev
the Telerik team

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