[Solved] Memory leaks when using radTooltipservice in RadTreeView

[Shirly]

I have added RadTooltipService to radTreeView, and have notices that there are memory leaks. I've used JustTrace and JetBrains profiler tools.

follwong is the way i've used RadTooltipService:

1. radTreeRow header Item dataTemplate: InputFile

<DataTemplate x:Key="InputFileTooltipTemplate" >
       <Grid x:Name="FileInfo" Width="Auto" >
           <Grid.Resources>
               <utils:ActualSizePropertyProxy Element="{Binding ElementName=FileInfo1}" x:Name="ActualSizeProxy"/>
           </Grid.Resources>
           <Grid.RowDefinitions>
               <RowDefinition Height="Auto" />
               <RowDefinition Height="Auto" />
           </Grid.RowDefinitions>

           <Grid x:Name="FileInfo1" Grid.Row="0" >
               <Grid.ColumnDefinitions>
                   <ColumnDefinition Width="Auto"/>
                   <ColumnDefinition Width="20"/>
                   <ColumnDefinition Width="Auto"/>
               </Grid.ColumnDefinitions>
               <Rectangle x:Name="EmptyRectangle" Grid.Row="0" Grid.Column="0" Fill="{StaticResource ControlBackground_Disabled}" StrokeThickness="0" Visibility="{Binding Thumbnail, Converter={StaticResource IsNullToVisibilityConverter}, ConverterParameter=Negate}" Width="110"  Height="110"/>
               <Image  x:Name="imageFile"   Source="{Binding Thumbnail, Converter={StaticResource ImageConverter}}" MaxWidth="110"  MaxHeight="110"/>
               <TextBlock Grid.Column="2" Text="{Binding Name}"  Foreground="{StaticResource Selection1Brush}" Height="18"  HorizontalAlignment="Left" VerticalAlignment="Top" />
               <StackPanel Grid.Column="2" VerticalAlignment="Bottom" Orientation="Vertical">
                   <StackPanel Orientation="Horizontal" >
                       <TextBlock  Text="{Binding Kind}"  Height="18"  Foreground="{StaticResource DefaultTextLightBrush}" VerticalAlignment="Bottom" Margin="0,24,0,0"  />
                       <TextBlock  Text="{Binding SizeDisplayString}"  Height="18"  Foreground="{StaticResource DefaultTextLightBrush}" VerticalAlignment="Bottom"   />
                   </StackPanel>
                   <StackPanel  Orientation="Horizontal" >
                       <TextBlock  Text="{Binding UploadDateTime}"  Height="18"  Foreground="{StaticResource DefaultTextLightBrush}"  />
                       <TextBlock  Text="{Binding Strings.InputFile_Uploaded, Source={StaticResource PlannerResourceWrapper}}"  Height="18"  Foreground="{StaticResource Secondary1Brush}"  />
                   </StackPanel>
               </StackPanel>
           </Grid>
            </Grid>
   </DataTemplate>

2.  radTreeRow child Item dataTemplate: Page

<DataTemplate x:Key="PageTooltipTemplate">
        <Grid x:Name="PageInfo">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto" MaxWidth="110"/>
                <ColumnDefinition Width="20"/>
                <ColumnDefinition Width="Auto"/>
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto" MaxHeight="110"/>
            </Grid.RowDefinitions>

            <Rectangle x:Name="EmptyRectangle" Grid.Row="0" Grid.Column="0" Fill="{StaticResource ControlBackground_Disabled}" StrokeThickness="0" Visibility="{Binding Thumbnail, Converter={StaticResource IsNullToVisibilityConverter}, ConverterParameter=Negate}" Width="110"  Height="110"/>
            <Image  x:Name="imagePage"  Source="{Binding Thumbnail, Converter={StaticResource ImageConverter}}" MaxWidth="110"  MaxHeight="110" />

            <TextBlock  Text="{Binding Name}"  Foreground="{StaticResource Selection1Brush}" Height="18" Grid.Column="2" HorizontalAlignment="Left" VerticalAlignment="Top" />

            <StackPanel Grid.Column="2" HorizontalAlignment="Left" VerticalAlignment="Bottom" Orientation="Vertical" >
                <StackPanel Orientation="Horizontal" >
                    <TextBlock  Text="{Binding Colors}"  Height="18"  Foreground="{StaticResource DefaultTextLightBrush}"  />
                    <TextBlock  Text="{Binding Strings.Page_Actual, Source={StaticResource PlannerResourceWrapper}}"  Height="18"  Foreground="{StaticResource Secondary1Brush}"  />
                </StackPanel>

                <StackPanel Orientation="Horizontal" >
                    <TextBlock  Text="{Binding NumOfAassignments,Converter={StaticResource PageAssignmentNumToStringConverter}}"  Height="18"  Foreground="{StaticResource DefaultTextLightBrush}"  />
                </StackPanel>

               </StackPanel>
        </Grid>
    </DataTemplate>

3. RowItem Style for both items: inputfile and page

<Style x:Key="ListInputFileTreeViewItemStyle" TargetType="telerik:RadTreeViewItem" BasedOn="{StaticResource DefaultRadTreeViewItemStyle}">

      <Setter Property="utils:StyleBinder.Binding">

          <Setter.Value>

              <utils:StyleBinding Binding="{Binding UIState.IsExpanded, Mode=TwoWay}" Property="IsExpanded"/>

          </Setter.Value>

      </Setter>

      <Setter Property="telerik:RadToolTipService.ToolTipContentTemplate" Value="{StaticResource InputFileTooltipTemplate}" />

      <Setter Property="telerik:RadToolTipService.ToolTipContent" Value="{Binding}"/> 

</Style>


<Style x:Key="ListPageTreeViewItemStyle" TargetType="telerik:RadTreeViewItem" BasedOn="{StaticResource DefaultRadTreeViewItemStyle}">

      <Setter Property="telerik:RadToolTipService.ToolTipContentTemplate" Value="{StaticResource PageTooltipTemplate}"/>

      <Setter Property="telerik:RadToolTipService.ToolTipContent" Value="{Binding}"/>

</Style>

hierarchical dataTemplate:

<telerik:HierarchicalDataTemplate x:Key="ListInputFileTemplate"
                                    ItemsSource="{Binding DisplayPages}"
                                    ItemTemplate="{StaticResource ListPageTemplate}"
                                    ItemContainerStyle="{StaticResource ListPageTreeViewItemStyle}">
      <ContentControl Template="{StaticResource CommonInputFileHeaderTemplate}"/>
  </telerik:HierarchicalDataTemplate>

RadTreeView

<telerik:RadTreeView x:Name="ListTreeView"
            telerik:RadDragAndDropManager.AllowDrag="True"
            ScrollViewer.VerticalScrollBarVisibility="Visible"
            ScrollViewer.HorizontalScrollBarVisibility="Disabled"
            PreviewDragEnded="RadTreeView_PreviewDragEnded"
            DragEnded="RadTreeView_DragEnded"
            Style="{StaticResource CommonInputFilesTreeViewStyle}"
            ItemsSource="{Binding SortedInputFiles}"
            ItemTemplate="{StaticResource ListInputFileTemplate}"
            ItemContainerStyle="{StaticResource ListInputFileTreeViewItemStyle}" >
            <telerik:RadContextMenu.ContextMenu>
                <telerik:RadContextMenu x:Name="InputFileContextMenu" EventName="MouseRightButtonUp"
                                        Placement="MousePoint"
                                        ItemsSource="{Binding InputFileMenuCommands, Converter={StaticResource RadMenuItemsConverter}}"/>
            </telerik:RadContextMenu.ContextMenu>

               </telerik:RadTreeView>

It's seems that even though the DataModel, and View doeb't exist any more the tooltip is still keeing them in memory by reference.
I have tried to remove the use of radToolTipService and memory leaks where gone.
I'm using VS2010 silverlight, Telerik.Windows.Controls version is : 2012.3.1129.1050 runtime version is: v4.0.30319

Can you check why I'm having these memory leaks?

[Vladislav]

Hello Shirly,

Thank you for this report.
We managed to narrow a memory leak within the RadTreeView control, caused by the RadContextMenu.
It is logged here, where you can track its progress and vote for it.
We however wasn't able to reproduce a memory leak specific to RadToolTip control used in the RadTreeView.
Can you please review the attached project, where we located the memory leak and let us know if your scenario/project differs significantly from it. It will be best if you can send us a sample project demonstrating the memory leak with the RadToolTip control, in order to further investigate it at our side.

Your Telerik points are updated accordingly.

Greetings,
Vladislav
the Telerik team