ListView Xamarin not Binding when adding item - xamarin

Question

I Am working with a ListView Control in XF application. My XAML Code looks like this.
<ListView ItemsSource="{Binding RechargeList}" HasUnevenRows="True" VerticalOptions="FillAndExpand">
<ListView.ItemTemplate>
<DataTemplate>
<TextCell Text="{Binding Path=SelectedParkingID}" TextColor="Red" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
While my code behind looks like
private ObservableCollection<Recharge> _RechargeList = new ObservableCollection<Recharge>();
public ObservableCollection<Recharge> RechargeList
{
get
{
return _RechargeList;
}
set
{
SetProperty(ref _RechargeList, value);
}
}
And I add Items to Collection in DelegateCommand Event
RechargeList.Add(new Recharge() { SelectedParkingIDParkingID = ParkingID, RechargeAmount = double.Parse(RechargeAmount), BalanceAmount = 10 });
However, the Listview fails to refresh. Could some one help me ?

Answer 1

Looks like you have a typo
<TextCell Text="{Binding Path=SelectedParkingID}" TextColor="Red" />
Should be
<TextCell Text="{Binding Path=SelectedParkingIDParkingID }" TextColor="Red" />
based on what your model looks like. If you try to bind to a property that doesn't exist, it fails softly. So you're adding an item, but the TextCell doesn't render since it has no content.

Answer 2

Please try to implement INotifyPropertyChanged interface in your class.
public class Data : INotifyPropertyChanged
{
// boiler-plate
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
}
protected bool SetField<T>(ref T field, T value, string propertyName)
{
if (EqualityComparer<T>.Default.Equals(field, value)) return false;
field = value;
OnPropertyChanged(propertyName);
return true;
}
// props
private string name;
public string Name
{
get { return name; }
set { SetField(ref name, value, "Name"); }
}
}
Each property is then just something like:
private string name;
public string Name
{
get { return name; }
set { SetField(ref name, value, "Name"); }
}