Memory slowly climbs between navigation

[John Morris]

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)->
 

[Valentin.Stoychev]

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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