filter Observable ObservableCollection - WPF
ObservableCollection<Person>  Persons = new ObservableCollection<Person>();

Persons.Add(new Person() { Name = "John 1", Age = 25, City = "New Delhi", Email ="abc@abc.com" });

Persons.Add(new Person() { Name = "John 2", Age = 25, City = "New Delhi", Email = "abc@abc.com" });

Persons.Add(new Person() { Name = "John 3", Age = 25, City = "New Delhi", Email = "abc@abc.com" });

Persons.Add(new Person() { Name = "John 4", Age = 25, City = "New Delhi", Email = "abc@abc.com" });

Persons.Add(new Person() { Name = "John 5", Age = 25, City = "New Delhi", Email = "abc@abc.com" });

Persons.Add(new Person() { Name = "John 6", Age = 25, City = "New Delhi", Email = "abc@abc.com" });

        ObservableCollection<Person> PersonsNew = new ObservableCollection<Person>();

ObservableCollection<Person> PersonsNew = new ObservableCollection<Person>(Persons.Skip(3).Take(4));

var PersonsNew = new ObservableCollection<Person>(Persons.Skip(3).Take(4));