WPF_Practice/PacticeSolution/ObervableCollectionSample/PersonCollection.cs

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<Person>
    {
        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"));
        }
    }
}