Xamarin Forms: accessing data in CollectionView - xaml

Question

I'm unable to undestand how to access data in CollectionView DataTemplate generated child controls. My XAML code is below. I want to get RadioButton values of all items. Please give me some ideas.
<CollectionView x:Name="ItemsListView"
ItemsSource="{Binding Questions}"
SelectionMode="None">
<CollectionView.ItemTemplate>
<DataTemplate>
<StackLayout Padding="10" >
<Label Text="{Binding Category}"
LineBreakMode="NoWrap"
Style="{DynamicResource ListItemTextStyle}"
FontSize="16" />
<Label Text="{Binding Text}"
LineBreakMode="WordWrap"
Style="{DynamicResource ListItemTextStyle}"
FontSize="16" />
<Grid HorizontalOptions="Fill" VerticalOptions="FillAndExpand">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<RadioButton Content="Yes" Grid.Column="1" Style="{DynamicResource ListItemTextStyle}"/>
<RadioButton Content="No" Grid.Column="2" Style="{DynamicResource ListItemTextStyle}"/>
<RadioButton Content="N/A" Grid.Column="3" Style="{DynamicResource ListItemTextStyle}"/>
</Grid>
<Editor x:Name="comment" Text="" AutoSize="TextChanges" Style="{DynamicResource ListItemTextStyle}" />
</StackLayout>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>

Answer 1

As Jason and Steve suggested,the best practice is using MVVM.
Below is code snippet for your reference:
In your XAML:
<RadioButton Content="Yes" Grid.Column="1" IsChecked="{Binding YesChecked}" Style="{DynamicResource ListItemTextStyle}"/>
<RadioButton Content="No" Grid.Column="2" IsChecked="{Binding NoChecked}" Style="{DynamicResource ListItemTextStyle}"/>
<RadioButton Content="N/A" Grid.Column="3" IsChecked="{Binding N_AChecked}" Style="{DynamicResource ListItemTextStyle}"/>
Then in your view model,use like below:
public bool yesChecked;
public bool YesChecked
{
get { return yesChecked; }
set
{
yesChecked = value;
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("YesChecked"));
}
}