NmeaParser/src/SampleApp.WinDesktop/GsaControl.xaml.cs

using NmeaParser.Messages;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace SampleApp.WinDesktop
{
	/// <summary>
	/// Interaction logic for GpgsaControl.xaml
	/// </summary>
	public partial class GsaControl : UserControl
	{
		public GsaControl()
		{
			InitializeComponent();
		}

		public Gsa Message
		{
			get { return (Gsa)GetValue(MessageProperty); }
			set { SetValue(MessageProperty, value); }
		}

		public static readonly DependencyProperty MessageProperty =
			DependencyProperty.Register(nameof(Message), typeof(Gsa), typeof(GsaControl), new PropertyMetadata(null, (d, e) => ((GsaControl)d).OnGsaPropertyChanged(e)));

        private void OnGsaPropertyChanged(DependencyPropertyChangedEventArgs e)
        {
			if (Message == null)
				vehicles.Value = null;
			else
				vehicles.Value = string.Join(",", Message?.SatelliteIDs);
        }
    }
}