[Solved] HTMLPlaceHolder Offsets Incorrectly

[James]

I have an HTMLPlaceholder in a RadWindow that loads content from an external source. The RadWindow is modal. Here is a code snippet:

<telerikNavigation:RadWindow x:Name="radWindow" Width="1200" Height="630" CanClose="True" CanMove="False" ResizeMode="NoResize" ModalBackground="#5D7C7373" WindowStartupLocation="CenterScreen" Closed="radWindow_Closed">

            <StackPanel>

                <telerik:RadHtmlPlaceholder x:Name="RadHtmlPlaceholder1" SourceUrl="Blank.htm" RespectSilverlightLayoutMeasure="True" Height="550"></telerik:RadHtmlPlaceholder>

                <Border BorderThickness="2" Width="1400" BorderBrush="#FFEAEAEA" />

                <Button x:Name="btnCloseWindow" Height="20" Width="100" Content="Close Window" Click="btnCloseWindow_Click"  VerticalAlignment="Bottom" Margin="10,10,10,10" />

            </StackPanel>
</telerikNavigation:RadWindow>

Sometimes (not always), the content of the HTMLPlaceHolder gets offset slightly. Always down and to the right... I include a screen grab that illustrates this. This can happen on load, or can happen when the content of the HTMLPlaceHolder loads a new page (internal to the displayed site, not by changing the content in Silverlight).

Any ideas?

I did go back and verify that if I removed all the other controls from the RadWindow that the problem does in fact still occur.

[Valentin.Stoychev]

Hello James,

Thank you for reporting this. We verified it and it is reproducible. We have logged the issue and will fix it for the next ServicePack. I updated your telerik points.

Regards,
Valentin.Stoychev
the Telerik team

[James]

Hi,

1: Do you have an expected date for the next SP?
2: Based on your understanding of the issue are there any approaches you can suggest to mitigate this problem? Does it always move by the same amount for example? If I gave it enough space within the radwindows that movement wouldn't cause overlap?

[Valentin.Stoychev]

Hello James,

Yes - the next service pack is shceduled for the first half of August.

what we found-out is that the first time the window is displayed - there is no problem. The problem is seen on a subsequent open of the Window and yes the offset is always the same - e.g. ~20 px on the left and ~10 px on top.

You can workaround it in the following way:

private void Button_Click_1(object sender, RoutedEventArgs e)
        {
            RadWindow1.ShowDialog();
            RadWindow1.Activated += new EventHandler(RadWindow1_Activated);
        }

        void RadWindow1_Activated(object sender, EventArgs e)
        {
            RadHtmlPlaceholder1.InvalidateMeasure();
            RadHtmlPlaceholder1.InvalidateArrange();
            RadHtmlPlaceholder1.UpdateLayout();
        }

Regards,
Valentin.Stoychev
the Telerik team