[Solved] items flickering

[ofir]

when i use CoverFlow with databinding, the items are flickering the first time they appear on screen. it does not happen all the time, but most of the time. (when i use CoverFlow without databinding everything works fine).

here is the code

<riaControls:DomainDataSource x:Name="domainDataSource" AutoLoad="True" QueryName="GetUsers"
                   LoadedData="DomainDataSourceLoadedData">
               <riaControls:DomainDataSource.DomainContext>
                   <Services:RichrachDomainContext />
               </riaControls:DomainDataSource.DomainContext>
           </riaControls:DomainDataSource>
           <telerik:RadCoverFlow x:Name="cvr" Grid.Row="1" ItemsSource="{Binding Data, ElementName=domainDataSource}"
                   VerticalAlignment="Center" ItemChangeDelay="0:0:2" FlowDirection="RightToLeft" Margin="10,0"
                   ItemScale="0.75" IsReflectionEnabled="False" DistanceBetweenItems="75" DistanceFromSelectedItem="25"
                   RotationY="45">
               <telerik:RadCoverFlow.EasingFunction>
                   <CubicEase EasingMode="EaseInOut" />
               </telerik:RadCoverFlow.EasingFunction>
               <telerik:RadCoverFlow.ItemTemplate>
                   <DataTemplate>
                       <telerik:RadCoverFlowItem Height="160" MouseLeftButtonUp="RadCoverFlowItem_MouseLeftButtonUp">
                           <StackPanel Background="{StaticResource RichrachBrush}" Height="120"
                                   VerticalAlignment="Center">
                             <TextBlock Text="{Binding UserName}" Height="20"></TextBlock>
                           </StackPanel>
                       </telerik:RadCoverFlowItem>
                   </DataTemplate>
               </telerik:RadCoverFlow.ItemTemplate>
           </telerik:RadCoverFlow>

any solution?

[Valeri Hristov]

Hello,

I suppose the problem is caused by the presense of a RadCoverFlowItem in the ItemTemplate. Generally you should avoid putting items in the ItemTemplate.

Best wishes,
Valeri Hristov
the Telerik team

[ofir]

thanks for the reply, but it didnot solve the problem.
i replaced the RadCoverFlowItem with Border, like this:

<riaControls:DomainDataSource x:Name="domainDataSource"  AutoLoad="True" QueryName="GetUsers"  LoadedData="DomainDataSourceLoadedData">
                <riaControls:DomainDataSource.DomainContext>
                    <Services:RichrachDomainContext />
                </riaControls:DomainDataSource.DomainContext>
            </riaControls:DomainDataSource>
            <telerik:RadCoverFlow x:Name="cvr"  Grid.Row="1"   ItemsSource="{Binding Data, ElementName=domainDataSource}"
                    VerticalAlignment="Center" ItemChangeDelay="0:0:2"   FlowDirection="RightToLeft" Margin="10,0" ItemScale="0.75" IsReflectionEnabled="False"  DistanceBetweenItems="75" DistanceFromSelectedItem="25" RotationY="45">
                <telerik:RadCoverFlow.EasingFunction>
                    <CubicEase EasingMode="EaseInOut" />
                </telerik:RadCoverFlow.EasingFunction>
                <telerik:RadCoverFlow.ItemTemplate>
                    <DataTemplate>
                        <Border Height="160"  MouseLeftButtonUp="RadCoverFlowItem_MouseLeftButtonUp">
                            <StackPanel Background="{StaticResource RichrachBrush}" Height="120" VerticalAlignment="Center" >
                            <Border Height="100" Width="100" >
                                <Border.Background>
                                    <ImageBrush
                                            ImageSource="{Binding Path=DbImages,Converter={StaticResource ImagesConverter}}"
                                            Stretch="UniformToFill" />
                                </Border.Background>
                            </Border>
                            <TextBlock Text="{Binding UserName}" Height="20" ></TextBlock>
                        </StackPanel>
                        </Border>
                    </DataTemplate>
                </telerik:RadCoverFlow.ItemTemplate>
              </telerik:RadCoverFlow>

the items are still flickering.

[Miroslav Nedyalkov]

Hi Ofir,

 Could you please open a support ticket and send us a sample project that reproduces the problem? This would help us investigate what causes the problem and help you resolve it.

Best wishes,
Miroslav Nedyalkov
the Telerik team