using System; using System.Collections.Generic; using System.Collections.ObjectModel; using System.Linq; using System.Text; using System.Threading.Tasks; namespace ObervableCollectionSample { public class PersonCollection : ObservableCollection { public PersonCollection() { InitInstance(); } private void InitInstance() { this.Add(new Person("neymar")); this.Add(new Person("messi")); this.Add(new Person("ronaldo")); this.Add(new Person("park")); this.Add(new Person("sonny")); } } }