Windows Phone: How to change time in TimePicker from C# code - windows-phone

Question

I have defined 4 ToggleSwitch like this (copied from example). Do I have to use DataTemplate?? Now I would like to change time value in TimePicker. How do I access time_picker and change the content? Thanks a lot!
<toolkit:ToggleSwitch Name="sleep_mode" Grid.Row="1" Header="{Binding Path=LocalizedResources.Sleep_Mode, Source={StaticResource LocalizedStrings}}" Checked="fetch_sleepmode_Checked" Unchecked="fetch_sleepmode_UnChecked" Click="OnClicked">
<toolkit:ToggleSwitch.HeaderTemplate>
<DataTemplate>
<ContentControl FontSize="{StaticResource PhoneFontSizeLarge}" Foreground="{StaticResource PhoneForegroundBrush}" Content="{Binding}"/>
</DataTemplate>
</toolkit:ToggleSwitch.HeaderTemplate>
<toolkit:ToggleSwitch.ContentTemplate>
<DataTemplate>
<StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Path=LocalizedResources.Status, Source={StaticResource LocalizedStrings}}" FontSize="{StaticResource PhoneFontSizeSmall}"/>
<ContentControl HorizontalAlignment="Left" FontSize="{StaticResource PhoneFontSizeSmall}" Content="{Binding}"/>
</StackPanel>
<TextBlock Text="{Binding Path=LocalizedResources.SleepMode, Source={StaticResource LocalizedStrings}}" TextWrapping="Wrap" FontSize="{StaticResource PhoneFontSizeSmall}" Foreground="{StaticResource PhoneSubtleBrush}" Width="360"/>
**<toolkit:TimePicker x:Name="time_picker" ValueChanged="TimePicker_ValueChanged"/>**
</StackPanel>
</DataTemplate>
</toolkit:ToggleSwitch.ContentTemplate>
</toolkit:ToggleSwitch>

Answer 1

In your case, I don't see why you even bother setting ContentTemplate for the ToggleSwitch, since no custom binding is present (e.g. to an instance-specific collection).
Instead, set the content directly and modify the TimePicker properties the same way - through a named reference.
On a side note - why would you even want a TimePicker inside a ToggleSwitch?