How to access element in Xamarin Forms Expander by name? - xaml

Question

I'm using the xamarin extended toolkit to show some Expanders in my application. What I'm trying to do is access an element in my Expander.ContentTemplate by setting x:Name. However when I try to access the element in my code-behind it doesn't find anything. What is the correct way to access any Label/Entry/Picker by name so I can manipulate it in the code-behind?
<xct:Expander Margin="0,0,0,20">
<xct:Expander.Header>
<Grid>
<Label FontAttributes="Bold" Text="Bookings" FontSize="Medium"/>
<Image Source="expand.png" HorizontalOptions="End"
VerticalOptions="Start">
<Image.Triggers>
<DataTrigger TargetType="Image"
Binding="{Binding Source={RelativeSource AncestorType={x:Type xct:Expander}}, Path=IsExpanded}"
Value="True">
<Setter Property="Source"
Value="collapse.png" />
</DataTrigger>
</Image.Triggers>
</Image>
</Grid>
</xct:Expander.Header>
<xct:Expander.ContentTemplate>
<DataTemplate>
<StackLayout Margin="0,10">
<Label x:Name="LabelDefaultPickup" FontAttributes="Bold" Text="Default Pickup location"/>
<Picker x:Name="PickupPicker" ItemsSource="{Binding ActivePickupList, Source={ x:Reference profilePage}}" ItemDisplayBinding="{Binding naam}" SelectedIndexChanged="PickupPicker_SelectedIndexChanged"/>
<Label x:Name="LabelDefaultPickupTime" FontAttributes="Bold" Text="Default Pickup time"/>
<Entry x:Name="DefaultPickupTime" Placeholder="pickup time" Text="{Binding Path=uurHeen}"/>
<Label x:Name="LabelDefaultDeparture" FontAttributes="Bold" Text="Default work location"/>
<Entry x:Name="DefaultDeparture" Placeholder="Location id" Text="{Binding Path=corp_id}"/>
<Label x:Name="LabelDefaultDepartureTime" FontAttributes="Bold" Text="Default Departure time"/>
<Entry x:Name="DefaultDepartureTime" Placeholder="Location id" Text="{Binding Path=uurTerug}"/>
</StackLayout>
</DataTemplate>
</xct:Expander.ContentTemplate>
</xct:Expander>

Answer 1

After reading the docs again, I removed the ContentTemplate tags (content is only rendered when the expander is tapped for the first time) after this change I could access an element like this:
var picker = BookingExpander.FindByName("PickupPicker") as Picker;
if (picker != null)
{
//do whatever you want
}