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RadGridView memory leak issue

9 Answers 769 Views

GridView

This is a migrated thread and some comments may be shown as answers.

Swapnil asked on 05 Dec 2018, 11:01 AM

memory-leak-screenshot.png

Hi Team,

We were previously using the 2017.2.614.45 version of the Telerik controls and were facing memory leak issues with RadGridView. We have hence upgraded to 2018.3.1016.45 version of the controls but still are facing the same memory leak issues.

We use RadPane which is placed in a RadPaneGroup; the pane in turn contains the RadGridView. We have handled the closed event of the RadPaneGroup wherein we do our cleanup operations(unsubscribing RadGridView events, setting DataContext as null). As stated in one of the forum posts, we also do the cleanup operations advised which is given at the end.

Please also find the memory profile report of our application when we closed the RadPane.

Kindly advise.

Regards,

Swapnil Ramteke

private void radDocking_Close(object sender, Telerik.Windows.Controls.Docking.StateChangeEventArgs e)

{

try

{

if (e.Panes.Count() == 1)

{

var pane = e.Panes.ElementAt(0);

if (pane is IDispose)

{

(pane as IDispose).Dispose();

}

pane.Content = null;

pane.Header = null;

pane.DataContext = null;

pane.RemoveFromParent();

pane = null;

// Wait for 5 seconds before garbage collection

System.Threading.Tasks.Task.Delay(5000).ContinueWith(antecedent =>

{

GC.WaitForPendingFinalizers();

GC.Collect();

});

}

catch (Exception)

{

}

9 Answers, 1 is accepted

answered on 13 Dec 2018, 12:39 PM

Grid-Memory.zip

Hello Swapnil,

Thank you for your patience.

I have tried various scenario but wasn't able to reproduce this memory leak. I think I am missing how you have set up the RadDocking and RadGridView controls. I am attaching the sample project which I used to test your case. May I ask you to take a look at this project and let me know what I am missing.

For a memory profiler, I have used JustTrace.

Regards,
Dinko
Progress Telerik

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answered on 13 Dec 2018, 02:10 PM

Hello Dinko,

We use a custom DockingPanesFactory the code for which is placed below:

public class ShellDockingPanesFactory : DockingPanesFactory

{

protected override void AddPane(RadDocking radDocking, RadPane pane)

{

var paneModel = pane as IPaneModel;

if (paneModel != null && !(pane is RadDocumentPane))

{

RadPaneGroup group = null;

switch (paneModel.Position)

{

case DockState.DockedRight:

group = radDocking.SplitItems.ToList().FirstOrDefault(i => i.Control.Name == "rightGroup") as RadPaneGroup;

if (group != null)

{

group.Items.Add(pane);

}

return;

case DockState.DockedBottom:

group = radDocking.SplitItems.ToList().FirstOrDefault(i => i.Control.Name == "bottomGroup") as RadPaneGroup;

if (group != null)

{

group.Items.Add(pane);

}

return;

case DockState.DockedLeft:

group = radDocking.SplitItems.ToList().FirstOrDefault(i => i.Control.Name == "leftGroup") as RadPaneGroup;

if (group != null)

{

group.Items.Add(pane);

}

return;

case DockState.DockedTop:

group = radDocking.SplitItems.ToList().FirstOrDefault(i => i.Control.Name == "centerGroup") as RadPaneGroup;

if (group != null)

{

group.Items.Add(pane);

}

return;

case DockState.FloatingDockable:

var fdSplitContainer = radDocking.GeneratedItemsFactory.CreateSplitContainer();

group = radDocking.GeneratedItemsFactory.CreatePaneGroup();

fdSplitContainer.Items.Add(group);

group.Items.Add(pane);

radDocking.Items.Add(fdSplitContainer);

pane.MakeFloatingDockable();

return;

case DockState.FloatingOnly:

var foSplitContainer = radDocking.GeneratedItemsFactory.CreateSplitContainer();

group = radDocking.GeneratedItemsFactory.CreatePaneGroup();

foSplitContainer.Items.Add(group);

group.Items.Add(pane);

radDocking.Items.Add(foSplitContainer);

pane.MakeFloatingOnly();

return;

default:

return;

}

base.AddPane(radDocking, pane);

}

We use PRISM in our main window, and then views are injected dynamically. The following is the code of the RadDocking in our MainWindow:

<telerik:RadDocking x:Name="radDocking"

Visibility="{Binding IsLoggedIn,Converter={StaticResource BoolVisibilityConverter}}"

Grid.Row="1"

Background="#FFEEEEF2"

BorderThickness="0"

prism:RegionManager.RegionName="DockRegion"

prism:RegionManager.RegionContext="{Binding ViewReference}"

PreviewClose="radDocking_PreviewClose"

Close="radDocking_Close">

<telerik:RadDocking.DockingPanesFactory>

<local:ShellDockingPanesFactory />

</telerik:RadDocking.DockingPanesFactory>

<telerik:RadDocking.DocumentHost>

<telerik:RadSplitContainer>

<telerik:RadPaneGroup x:Name="centerGroup" telerik:RadDocking.SerializationTag="centerGroup" ScrollViewer.HorizontalScrollBarVisibility="Auto" DropDownDisplayMode="WhenNeeded"/>