Xamarin form: How to reference to the parent binding

Question

Ass

Answer 1

even qubuss give the correct answer I like to answer this question with example to make it more clear

lets consider we have a page

this reference parent context
    x:Class="Your_Class_Name">
  
            
               
                   
                        
                         // this come from item source
                    
                    
                        

                       
                  /DataTemplate>
           
    

your view Model should look like that

 public class ViewModelName 
    {
        private List _listSource = new List();


        public List ListSource
        {
            get => _listSource;
            set
            {
                _listSource = value;
                RaisePropertyChanged();
            }
        }

        public ICommand CommandFromParent => new Command(HandleYourActionHere);

}
}

small Explanation of what happen , when we write BindingContext.CommandFromParent BindingContext represent BindingContext of firstPage(x:Name="firstPage") which be ViewModelName