Grid resizes slowly on window resize

[N Mackay]

Hi,

I noticed an issue with GridView.

I bind 88 rows to a grid and when I maximise the window you get a black canvas and the grid overlayed by the same grid for a second or so before the grid resizes to the maximised window width.

I have attached a screenshot which shows this behaviour (the white areas were sensitive data cut, it's not a graphical issue).

The machine is a pretty new quad core 3Ghz machine with 8GB RAM and 512MB DDR2 ram graphic card running Win7 x64.

Visual Studio 2010 SP1, Rad Controls 20112.01.320.0. I tried with an older sample of RadGrid 2011.1.0419.40 and it had the same issue.

Is there a way to make the grid resize a little less clunky? am I missing something in the XAML?

Any feedback would be appreciated,

Thanks.

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    // Instantiate the DataServiceContext.
    _context = new Vessel.Service.VesselService(_svcUri);
}

private void button_getvesselTypes_Click(object sender, RoutedEventArgs e)
{
    try
    {

        StartStats();

        var VTQuery = from v in _context.Vestype
                      select v;

        DataServiceCollection<VestypeEntity> VesselTypes = new
            DataServiceCollection<VestypeEntity>(VTQuery);

        this._radgrid_output.DataContext = VesselTypes;

        ShowStats();
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.ToString());
    }
}

<Window x:Class="TestClient.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        Title="WCF oData Test"
        Width="750" Height="600"
        x:Name="OutputWindow"
        Loaded="Window_Loaded">

    <Grid x:Name="grid_mainlayout">
        <Grid.RowDefinitions>
            <RowDefinition x:Name="gridrow_detailsection" Height="*"></RowDefinition>
            <RowDefinition x:Name="gridrow_footersection" Height="60"></RowDefinition>
        </Grid.RowDefinitions>

        <telerik:RadGridView  Name="_radgrid_output"
                              Grid.Row="0"
                              Margin="2"
                              HorizontalAlignment="Stretch"
                              VerticalAlignment="Stretch"
                              DataContext="{Binding}"
                              ItemsSource="{Binding}"
                              EnableColumnVirtualization="True"
                              EnableRowVirtualization="True"
                              DataLoadMode="Asynchronous"
                              IsReadOnly="True"
                              ActionOnLostFocus="None" />

        <StackPanel x:Name="stackpannel_buttons" Grid.Row="1" Orientation="Horizontal">
            <Button x:Name="button_Query1" Margin="2,10,10,10" Width="100" Content="Get 6000 rows" Click="button_getvessels_Click"></Button>
            <Button x:Name="button_Query2" Margin="2,10,10,10" Width="100" Content="Get 80 rows" Click="button_getvesselTypes_Click"></Button>
        </StackPanel>
    </Grid>

</Window>

[Dimitrina]

Hi,

 I have tested the described issue, but I was not able to encounter such a problem on window resize. The XAMLcode looks fine. What I can suggest is to set DataLoadMode to be Synchronous and check what the result is.

Regards,
Didie
the Telerik team

[N Mackay]

Didie ,

Thanks for responding.

I tried that but I still get the same behaviour.

I'll try and get a sample together and open a ticket.

Thanks,
Norman.

[N Mackay]

Didie,

It performs bit better if I switch of row and column virtualisation. The performace hit on the grid of massive when I do that though (when I bind 5000+ records I get an out of memory exception in the grid) so it's not a solution.

<telerik:RadGridView  Name="_radgrid_output"
                              Grid.Row="0"
                              Margin="2"
                              HorizontalAlignment="Stretch"
                              VerticalAlignment="Stretch"
                              DataContext="{Binding}"
                              ItemsSource="{Binding}"
                              EnableColumnVirtualization="False"
                              EnableRowVirtualization="False"
                              DataLoadMode="Asynchronous"
                              IsReadOnly="True"
                              ActionOnLostFocus="None" />