Pick up a line from a CSV each 30 seconds and binding it to a user control

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I am a beginner with C# and WPF.
I would like to read from a CSV . I would like to pick up a line from the CSV each 30 second and with the fields of the line update the values in a User control ( a gauge with a Text box).
What I have already: I am doing something similar with a button event. I am reading the CSV with StreamReader and ReadLine and I am storing the data in a List<string>. I use for the user control INotifypropertyChanged and I am binding the control properties to a data context ( values from the list). Then, when I press the button , the values are taken from to the next csv line (next list position) and consequently are updated into the user control.


I want to do it automatically , I want to read the next line each 30 seconds.I read about timer and I did some tests printing the objtects of the list each 5 secodnds ,but it is not working for my plan. Any recommendation for my objective? I don't have to much experience with events and periods.

My code in this case it is not relevant because I am asking about how to fire , read , pick up a line or execute the data update each 30 second but just in case I added the main code blocks:

User control:

<pre lang="c#">    <Viewbox Grid.Column="1"  >
      <gauge:CircularGaugeControl x:Name="gaugeWindAngle"  Grid.Column="1" Grid.Row="0" Margin="5"
                                      Radius="105"
                                      ScaleRadius="60"
                                      ScaleStartAngle="140"
CurrentValue="{Binding Type}"
                                      RangeIndicatorThickness="9"
                                      RangeIndicatorRadius="45"
                                      RangeIndicatorLightRadius="8"                                                                        
                                      PointerThickness ="5"
                                      DialTextOffset="40"
                                      DialText="Wind Angle"
                                      DialTextColor="SlateGray"

                                        />
    </Viewbox >
     <WrapPanel Margin="5">
        <Label Foreground="#DFA297">Speed: </Label>        
          <TextBox
              x:Name="textboxWindSpeed" Text="{Binding TalkerID , UpdateSourceTrigger=PropertyChanged}"/>
      </WrapPanel>
    <Button Grid.Column="0"  Content="Send sentence" x:Name="b1"        HorizontalAlignment="Left"      Margin="10,10,0,0"      VerticalAlignment="Top" Click="Button_Click"     />
  </Grid>

CODE BEHIND

public partial class Wind_gauge : UserControl, INotifyPropertyChanged
    {
    Trucker trucker = new Trucker();//DECLARE DATA CONTEXT AND LINK IT TO THE WIDGET properties (VALUES)
        double windAngle;
        int click = 0;
        public double WindAnglevalue
        {

            get { return windAngle; }
            set
            {
                windAngle = value;
                if (PropertyChanged != null)
                {
                    PropertyChanged(this, new PropertyChangedEventArgs("WindAnglevalue"));
                }
            }

        }

        double windSpeed;
        public double WindSpeedvalue
        {

            get { return windSpeed; }
            set
            {
                windSpeed = value;
                if (PropertyChanged != null)
                {
                    PropertyChanged(this, new PropertyChangedEventArgs("WindSpeedvalue"));
                }            }
        }

        #region INotifyPropertyChanged Members

        public event PropertyChangedEventHandler PropertyChanged;

        #endregion

        public Wind_gauge()
        {
            InitializeComponent();
            this.Loaded += new RoutedEventHandler(Window1_Loaded);//launched event
                
        }

        void Window1_Loaded(object sender, RoutedEventArgs e)
        {
            this.gaugeWindAngle.DataContext = trucker.sentenceReceived; // Initialize widjet value to data context
            this.textboxWindSpeed.DataContext = trucker.sentenceReceived;
            }

   private void Button_Click(object sender, RoutedEventArgs e)
        {
            sendsentence(sender, e);
                      click++;//List index         
           
        }

READING MY CSV IN class Truker to List<string>sentencesListt;:

class Trucker
   {  static Timer _timer;//test
       public  List<string> s = new List<string>(); //Repository of NMEA messages recived
       public  List<string> sentencesList
       {
            get {

               if (s == null) {
                   loadNMEAsentences();

               }
               return s;
           }        }

public Trucker()
       {
           loadNMEAsentences();// Load  messages from CSV
        /*   foreach (string l in sentencesList)
           {
               Console.Write("Sentences:" + l);
           }
           Console.Read();*/
              }

   public void loadNMEAsentences()
       {
           _timer = new Timer(3000);
           _timer.Enabled = true;
           _timer.Elapsed += new ElapsedEventHandler(timerRead);
       }//end method


   void timerRead(object sender, ElapsedEventArgs e)
       { s= new List<string>();
           System.IO.StreamReader file =
            new System.IO.StreamReader(@"C:\Users\........\Data\NMEAmsg_wind.csv");
           string line;
           while ((line = file.ReadLine()) != null)
           {                   if (line.IndexOf("$IIMWV", StringComparison.CurrentCultureIgnoreCase) >= 0)
               {
                   s.Add(line);// Insert sententece to the repository sentences list
                   // Console.WriteLine(line);
               }
           }
           file.Close();        }