public class User 
    { 
        public string Name { get; set; } 
        public string Phone { get; set; } 
        public string Country { get; set; } 
        public string City { get; set; } 
        public double Total { get; set; } 

    } 
    public class MyDataSource 
    { 
        public ObservableCollection<User> Users { get; set; } 

        public MyDataSource() 
        { 
            Users = new ObservableCollection<User>(); 
            LoadDummyData(); 
        } 

        private void LoadDummyData() 
        { 
            Users.Add(new User() { Name = "Frank", Phone = "(122) 555-1234", Country = "USA", City = "NY", Total = 432 }); 
            Users.Add(new User() { Name = "Bob", Phone = "(212) 555-1234", Country = "USA", City = "NY", Total = 456 }); 
            Users.Add(new User() { Name = "Mark", Phone = "(301) 555-1234", Country = "USA", City = "Chicago", Total = 123 }); 
            Users.Add(new User() { Name = "Pierre", Phone = "+33 (122) 555-1234", Country = "France", City = "Paris", Total = 333 }); 
            Users.Add(new User() { Name = "Jacques", Phone = "+33 (122) 555-1234", Country = "France", City = "Paris", Total = 222 }); 
            Users.Add(new User() { Name = "Olivier", Phone = "+33 (122) 555-1234", Country = "France", City = "Marsiglia", Total = 444 }); 
        } 

    }