WPF Listview ModelView only update once - wpf

Question

I want to Update a ListView from a ModelView, it works only one time (at program start), which is wrong.
The method BatterieApiMqtt_MessageReceived is called every two seconds, the value are changing.
Thanks
Here is my Code
Model
public class AccuModel : INotifyPropertyChanged
{
private string id;
private string voltage;
private string current;
private string power;
private string ladezustand;
private string restkapazität;
[JsonProperty("id")]
public string Id
{
get { return id; }
set
{
id = value;
OnPropertyChanged("Id");
}
}
[JsonProperty("voltage")]
public string Voltage
{
get { return voltage; }
set
{
voltage = value;
OnPropertyChanged("Voltage");
}
}
[JsonProperty("current")]
public string Current
{
get { return current; }
set
{
current = value;
OnPropertyChanged("Current");
}
}
[JsonProperty("power")]
public string Power
{
get { return power; }
set
{
power = value;
OnPropertyChanged("Power");
}
}
[JsonProperty("ladezustand")]
public string Ladezustand
{
get { return ladezustand; }
set
{
ladezustand = value;
OnPropertyChanged("Ladezustand");
}
}
[JsonProperty("restkapazität")]
public string Restkapazität
{
get { return restkapazität; }
set
{
restkapazität = value;
OnPropertyChanged("Restkapazität");
}
}
public event PropertyChangedEventHandler PropertyChanged;
private void OnPropertyChanged(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
Model
public class EnergieMonitor
{
[JsonProperty("values")]
public IList accuValues { get; set; }
}
ModelView
public class AccuViewModel
{
private IList<AccuModel> _AccuModelsList;
private Api.BatterieApi BatterieApiMqtt;
public AccuViewModel()
{
this.BatterieApiMqtt = new Api.BatterieApi();
BatterieApiMqtt.MessageReceived += BatterieApiMqtt_MessageReceived;
}
private void BatterieApiMqtt_MessageReceived(object sender, EventArgs e)
{
var values = BatterieApiMqtt.EnergieMonitorValues().accuValues;
_AccuModelsList = new List<AccuModel>();
if (_AccuModelsList.Count > 0)
{
_AccuModelsList.Clear();
}
for (int i = 0; i < values.Count; i++)
{
_AccuModelsList.Add(new AccuModel());
_AccuModelsList[i] = values[i];
}
}
public IList<AccuModel> AccuModel
{
get { return _AccuModelsList; }
set { _AccuModelsList = value; }
}
}
Control.cs
public ucWBatterie12VUebersicht()
{
InitializeComponent();
AccuViewModel viewModel = new AccuViewModel();
ListAccus.DataContext = viewModel;
}
Control.xaml
<Grid Margin="10,90,1170,320">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<ListView Name="ListAccus" Grid.Row="1" Margin="10,10,0,10" ItemsSource="{Binding AccuModel}" FontSize="18" FontFamily="Arial" Foreground="WhiteSmoke" Background="Transparent" AlternationCount="2" ItemContainerStyle="{StaticResource alternateColor}">
<ListView.View>
<GridView>
<GridView.ColumnHeaderContainerStyle>
<Style TargetType="{x:Type GridViewColumnHeader}">
<Setter Property="Background" Value="#FF5B8577"/>
<Setter Property="Height" Value="30"/>
</Style>
</GridView.ColumnHeaderContainerStyle>
<GridViewColumn Header="ID" DisplayMemberBinding="{Binding Id}" Width="50"/>
<GridViewColumn Header="Spannung [V]" DisplayMemberBinding="{Binding Voltage, Mode=TwoWay}" Width="120" />
<GridViewColumn Header="Strom [A]" DisplayMemberBinding="{Binding Current, Mode=TwoWay}" Width="120" />
<GridViewColumn Header="Leistung [W]" DisplayMemberBinding="{Binding Power, Mode=TwoWay}" Width="120" />
<GridViewColumn Header="Ladezustand [%]" DisplayMemberBinding="{Binding Ladezustand, Mode=TwoWay}" Width="150" />
<GridViewColumn Header="Restkapazität [Ah]" DisplayMemberBinding="{Binding Ladezustand, Mode=TwoWay}" Width="150" />
</GridView>
</ListView.View>
</ListView>
</Grid>

Answer 1

Implement InotifyPropertychanged interface on your Viewmodel
user ObservableCollection instead of IList (as slugster suggested)
Do the updates on your Property (AccumodelList) instead of the backing field (_AccuModelList)
This should fix your issue.
You might consider not to clear the list, just assign new Values (might gain performance...)