[Solved] cells do not display text if DataLoadMode set to Asynchronous

[Alex]

As per title ... (see attached capture.png ) If set to Synchronous I can see everything.

If I tick a checkbox View All in column filter options the data becomes visible (see capture2.png )

 Below is the code:(telerik version 2011.2.712.1040)

<Grid x:Name="LayoutRoot">

        <telerik:RadBusyIndicator IsBusy="{Binding IsBusy, ElementName=GridViewDomainDataSource}">

            <Grid >
                <Grid.RowDefinitions>
                    <RowDefinition
                        Height="*" />
                    <RowDefinition
                        Height="Auto" />
                </Grid.RowDefinitions>

                <contextMenu:RadGridViewExt
                            x:Name="GridViewMessages"
                            Background="White"
                            ScrollViewer.HorizontalScrollBarVisibility="Auto"
                            ScrollViewer.VerticalScrollBarVisibility="Auto"
                            HorizontalAlignment="Stretch"
                            VerticalAlignment="Stretch"
                            AutoGenerateColumns="False"
                            IsReadOnly="True"
                            ShowColumnFooters="False"
                            EnableColumnVirtualization="True"
                            EnableRowVirtualization="True"
                            ShowGroupPanel="False"
                            Grid.Row="0"
                            SelectionMode="Extended"
                            SelectionUnit="Cell"
                            ClipboardCopyMode="All"
                            DataLoadMode="Asynchronous"
                            HierarchyChildTemplate="{StaticResource childGridView}"
                            ItemsSource="{Binding Data, ElementName=GridViewDomainDataSource}"
                            RowIsExpandedChanging="GridViewMessages_RowIsExpandedChanging">

                    <telerik:RadContextMenu.ContextMenu>
                        <telerik:RadContextMenu x:Name="MessagesContextMenu">
                            <telerik:RadContextMenu.Items>
                            </telerik:RadContextMenu.Items>
                        </telerik:RadContextMenu>
                    </telerik:RadContextMenu.ContextMenu>

                    <telerik:RadGridView.Columns>
                        <telerik:GridViewDataColumn DataMemberBinding="{Binding ID}" Header="ID" Width="Auto" MinWidth="50"/>
                        <telerik:GridViewDataColumn DataMemberBinding="{Binding Message}" Header="Message" Width="Auto" MinWidth="200" MaxWidth="800"/>
                    </telerik:RadGridView.Columns>

                    <telerik:RadGridView.ChildTableDefinitions>
                        <telerik:GridViewTableDefinition/>
                    </telerik:RadGridView.ChildTableDefinitions>

                </contextMenu:RadGridViewExt>

                <telerik:RadDataPager Grid.Row="1" Source="{Binding Data, ElementName=GridViewDomainDataSource}"
                              IsTotalItemCountFixed="False" PageSize="50" Margin="0,0,0,4"
                              Name="RadDataPagerMessages" DisplayMode="All"/>
            </Grid>

        </telerik:RadBusyIndicator>

        <riaControls:DomainDataSource x:Name="GridViewDomainDataSource"
                                      QueryName="GetMessages"
                                      AutoLoad="False"
                                      LoadSize="100"
                                      PageSize="50"
                                      LoadedData="GridViewDomainDataSource_LoadedData" >

            <riaControls:DomainDataSource.DomainContext>
                <context:SomeContextHere/>
            </riaControls:DomainDataSource.DomainContext>

        </riaControls:DomainDataSource>

    </Grid>

[Alex]

I found this thread - http://www.telerik.com/community/forums/silverlight/gridview/radgridview-and-asynchronous-load.aspx

It says : "you can safely remove DataLoadMode="Asynchronous" since your service is asynchronous itself. The grid will get chunk of data only if you use paging - DataLoadMode="Asynchronous" is not related to this"

I did that, but I still get a problem (removing DataLoadMode="Asynchronous" fixes empty cells issue - is it a bug?). I get too much data in one request. Basicaly I want to load 100 records and display 50 per page as you can see from my code, but it seem to not work ... any idea? thanks