Memory leak problem in Thumb control RSS

• 

  cybtow

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  9 Points

  15 Posts

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  Memory leak problem in Thumb control

  May 10, 2010 10:09 AM | LINK

  I think I have detected a new problem with memory leak in Silverlight 4. Now, this new problem has been detected in Thumb control.
  
  I have created a new Silverlight 4 application with three pages:
  - MainPage: With a content control, and three buttons. The first button load the Page1 in the content control. The second button load the Page 2 in the content control. And the last button will call ten times to GC.Collect() and GC.WaitForPendingFinalizers().
  - Page1: Empty page.
  - Page2:
  
  XAML:

   

      <Grid x:Name="LayoutRoot" Background="Pink" Width="400" Height="400">
         
          <Thumb x:Name="myThumbStart" 
                 Grid.Row="0"
                 Height="50" 
                 HorizontalAlignment="Left" 
                 VerticalAlignment="Top" 
                 Width="50" 
                 DragDelta="myThumbStart_DragDelta" 
                 >
          </Thumb>
          
      </Grid>

   
  
  Code behind:

    

      public partial class DualSlider3 : UserControl
      {
  
          public DualSlider3()
          {
              InitializeComponent();
          }
  
  
          private void myThumbStart_DragDelta(object sender, System.Windows.Controls.Primitives.DragDeltaEventArgs e)
          {
              double newMarginLeft = myThumbStart.Margin.Left + e.HorizontalChange;
  
              if ((newMarginLeft >= 0) && (this.LayoutRoot.ActualWidth > (newMarginLeft + myThumbStart.ActualWidth)))
              {
                  myThumbStart.Margin = new Thickness(newMarginLeft, 0, 0, 0);
              }
          }
  
  
      }

   

  If I load the Page2 and I move the Thumb control doing drag with mouse from left side to right side several times, when I load the Page1 and press GC button, the Page2 (and all its content) is not removed from memory. I checked it with WinDbg.
  
  Can anybody test this problem?
  
  

  Thumb memory leak silverlight 4

• 

  MaxMustermann

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  2 Points

  3 Posts

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  Re: Memory leak problem in Thumb control

  May 11, 2010 02:00 PM | LINK

  Its exactly the same bug which I already posted here. It affects nearly every drag & drop operation. Hope we get an answer this time...