Problem creating class that inherits from RadPhoneApplicationFrame

[Arash]

Just try it, it throws a nullreference on "base.ApplyTemplate()".

Here is my control template:

<Style TargetType="local:CustomFrame">
    <Setter Property="IsTabStop" Value="False"/>
    <Setter Property="Foreground" Value="{StaticResource PhoneForegroundBrush}"/>
    <Setter Property="FontSize" Value="{StaticResource PhoneFontSizeNormal}"/>
    <Setter Property="FontFamily" Value="{StaticResource PhoneFontFamilyNormal}"/>
    <Setter Property="HorizontalAlignment" Value="Stretch"/>
    <Setter Property="VerticalAlignment" Value="Stretch"/>
    <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
    <Setter Property="VerticalContentAlignment" Value="Stretch"/>
    <Setter Property="Background" Value="{x:Null}"/>
    <Setter Property="BorderThickness" Value="0"/>
    <Setter Property="BorderBrush" Value="{x:Null}"/>
    <Setter Property="Padding" Value="0"/>
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="local:CustomFrame">
                <Border x:Name="ClientArea" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" HorizontalAlignment="{TemplateBinding HorizontalAlignment}" VerticalAlignment="{TemplateBinding VerticalAlignment}" d:DesignHeight="800" d:DesignWidth="480" >
                    <Border.Resources>
                        <Storyboard x:Name="ShowLoadingSB">
                            <DoubleAnimation Duration="0" To="1" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="LoadingOverlay"/>
                            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="LoadingOverlay">
                                <DiscreteObjectKeyFrame KeyTime="0">
                                    <DiscreteObjectKeyFrame.Value>
                                        <Visibility>Visible</Visibility>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                            </ObjectAnimationUsingKeyFrames>
                        </Storyboard>
                        <Storyboard x:Name="HideLoadingSB">
                            <DoubleAnimation Duration="0:0:0.2" To="0" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="LoadingOverlay"/>
                            <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="LoadingOverlay">
                                <DiscreteObjectKeyFrame KeyTime="0:0:0.2">
                                    <DiscreteObjectKeyFrame.Value>
                                        <Visibility>Collapsed</Visibility>
                                    </DiscreteObjectKeyFrame.Value>
                                </DiscreteObjectKeyFrame>
                            </ObjectAnimationUsingKeyFrames>
                        </Storyboard>
                    </Border.Resources>
                    <Grid>
                        <telerikPrimitives:RadTransitionControl x:Name="TransitionControl" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}" Margin="{TemplateBinding Padding}" Content="{TemplateBinding Content}" ContentTemplate="{TemplateBinding ContentTemplate}" Transition="{TemplateBinding Transition}" />
                        <StackPanel x:Name="LoadingOverlay" IsHitTestVisible="False" VerticalAlignment="Center" Background="{StaticResource PhoneChromeBrush}">
                            <TextBlock TextWrapping="Wrap" Foreground="{StaticResource PanoramaForegroundBrush}" FontFamily="{StaticResource PhoneFontFamilyNormal}" HorizontalAlignment="Center" VerticalAlignment="Center" TextAlignment="Center" Margin="-3,24,0,0" Text="Loading news from memory" FontSize="{StaticResource PhoneFontSizeLarge}"/>
                            <sglib:RadialBusyIndicator x:Name="BusyIndicator" VerticalAlignment="Center" Foreground="{StaticResource PanoramaForegroundBrush}" Width="48" Height="48" Margin="0,12,0,24" NumberOfItems="7" IsPlaying="True"/>
                        </StackPanel>
                    </Grid>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

[Arash]

I'm using the Q2 release btw

[Arash]

Alright found the answer, you have to set the Transition Property to some (any) Transition object.

[Valentin.Stoychev]

Hello Arash,

Please let us know if you need more help in achieving your scenario.

Regards, Valentin.Stoychev
the Telerik team