RadGridView Performances Issue with RadDocking Q3 2011

[Bernard]

Hi,

We are using some RadGridView in multiple RadDocking Panes.
Thoses grids have over 1000 items and we got an serious performance issue when switch between panes (hosted in DocumentHost). It takes about 1-2sec before displaying the pane.

I don't understand since in Q2 2011 it works pretty much. But now in Q3 2011 it's really slow.

The grid is quite simple :

<Grid>
                    <Grid.RowDefinitions>
                        <RowDefinition Height="Auto"/>
                        <RowDefinition Height="500"/>
                    </Grid.RowDefinitions>
                    <GroupBox Header="Recherche"  Margin="5">
                        <StackPanel Orientation="Horizontal">
                            <TextBlock Text="Filtre" Margin="5"/>
                            <TextBox x:Name="txtFilter" Margin="5" Width="200"/>
                        </StackPanel>
                    </GroupBox>

                    <telerik:RadGridView Grid.Row="1" Height="500" ShowGroupPanel="False" IsFilteringAllowed="False" CanUserFreezeColumns="False" CanUserReorderColumns="False" ValidatesOnDataErrors="None" FilterTextBox:TextBoxFilterBehavior.TextBox="{Binding ElementName=txtFilter}"  SelectedItem="{Binding SelectedItem}" IsReadOnly="True" RowIndicatorVisibility="Collapsed"  HorizontalAlignment="Stretch" VerticalAlignment="Stretch" ItemsSource="{Binding ItemList}" AutoGenerateColumns="False">
                        <i:Interaction.Triggers>
                            <i:EventTrigger EventName="MouseDoubleClick" >
                                <ei:CallMethodAction TargetObject="{Binding}"  MethodName="EditCommand"/>
                            </i:EventTrigger>
                        </i:Interaction.Triggers>

                        <telerik:RadGridView.Columns>
                            <telerik:GridViewDataColumn Width="100" Header="Code" DataMemberBinding="{Binding Code}" UniqueName="Code"/>
                            <telerik:GridViewDataColumn Width="450" Header="Désignation Longue" DataMemberBinding="{Binding LongName}"/>
                            <telerik:GridViewCheckBoxColumn Width="80" Header="Bloqué" DataMemberBinding="{Binding IsLocked}" UniqueName="IsLocked"/>
                        </telerik:RadGridView.Columns>

                    </telerik:RadGridView>
                </Grid>

I've tested to remove the GridViewCheckBoxColumn, without luck.

When me application window is sized to the minimum in order to display only 1 row in the grid, it's really fast, but in full screen (displaying about 30 items visible) it's really slow...

Any help ?

Thanks.

[Nedyalko Nikolov]

Hello,

RadPane has a property "IsContentPreserved". If you set it to "True" this will eliminate RadDockPanel's content loading every time when switching between RadDock panels.
Let me know if this does not help.

Kind regards,
Nedyalko Nikolov
the Telerik team

[Bernard]

Hello,

Yes it works really fast now !

Thanks. :)