oap_labs/models/Class2.cs

using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading.Tasks;



namespace wpf_listbox.models
{
    public class PeopleGender
    {
        public string title { get; set; }
    }
    public class PeopleAge
    {
        public string title { get; set; }
        public int AgeFrom { get; set; }
        public int AgeTo { get; set; }
    }
    public class PeoplePlace
    {
        public string title { get; set; }

    }
}