I have a simple TabControl done using templated RadioButtons and Grids which change visibility when IsChecked on a RadioButton changes, something like this:
<Grid Name="TabGrid">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<StackPanel Grid.Row="0" Orientation="Horizontal">
<RadioButton x:Name="RadioButton1" Content="Latest" Style="{StaticResource TabRadioButtonStyle}" IsChecked="True" GroupName="G1"/>
<RadioButton x:Name="RadioButton2" Content="Popular" Style="{StaticResource TabRadioButtonStyle}" IsChecked="False" GroupName="G1" Margin="30,0,0,0" />
</StackPanel>
Now, every grid inside has EntranceThemeTransition defined, something like this:
<GridGrid.Row="1" Visibility="{Binding ElementName=RadioButton1, Path=IsChecked, Converter={StaticResource BoolToVisibilityConverter}}">
<Grid.ChildrenTransitions>
<TransitionCollection>
<EntranceThemeTransition />
</TransitionCollection>
</Grid.ChildrenTransitions>
As I understand, the EntranceThemeTransition displays only when the items are first shown. Is there a way to force EntranceThemeTransition to repeat every time the visibility of the Grid changes?