Entry : update binding when UpdateSourceEventName=Completed or Unfocused

Hello,

I have a collection of n item to display. I have some DataTemplate where I have an Entry (or an Editor or some other controls depends on the DataTemplate being displayed).
I want to raise some properties when the entry is completed or when it stop being focused (not on each character being tapped but when the whole input is set. To be clear, if I type "hello" I want only one event to be raised (e.Text = "hello") instead of 5 times (one for each character)

Here is my Xaml :
<DataTemplate> <ContentView> <StackLayout> <Entry Text="{Binding Text, UpdateSourceEventName=Completed}" /> <Editor AutoSize="TextChanges" Text="{Binding Text, UpdateSourceEventName=Unfocused}" /> </StackLayout> </ContentView> </DataTemplate>

I would like to find how to fix my binding and the UpdateSourceEventName to make it works without code behind.

Anyone figured out how to make the UpdateSourceEventName working ?