Handle event when Label Text Change

Question

I\'m developing App which communicate with RFID Reader, I have the following Label which takes it\'s value from the Reader (when I click on the read button on the hardware)

Answer 1

What you can do is on whatever page/view your label is on create a new bindableproperty that is set to your binding. Then add a propertyChanged method that will get called if the text on your label changes.

 public static BindableProperty TextChangedProperty = BindableProperty.Create(nameof(TextChanged), typeof(string), typeof(YourView), string.Empty,  propertyChanged:OnTextChanged);

 public string TextChanged
 {
     get { return (string)GetValue(TextChangedProperty); }
     set { SetValue(TextChangedProperty, value); }
 }

 static void OnTextChanged(BindableObject bindable, object oldValue, object newValue)
 {
    //Do stuff
 }

Answer 2

As was mentioned in the comments, it looks like the Statistics class must implement INotifyPropertyChanged (that's how the binding is able to update the UI when the data changes). If that's the case, you should just subscribe to that same event in your code. Wherever you have access to that Statistics variable (in code bebhind or viewmodel), just do

Statistics.PropertyChanged += (o,e)=> 
{ 
    if (e.PropertyName = "TotalUniqueCount")
    {
      //do something
    }
}