Audit_APP/AuditData.cs

using GalaSoft.MvvmLight;
using Models;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Audit
{
    public class AuditData : ObservableObject
    {
       public static AuditData Instance = new Lazy<AuditData>(() => new AuditData()).Value;

        private UserAccount useraccount = new UserAccount();

        public UserAccount Useraccount
        {
            get { return useraccount; }
            set { useraccount = value; RaisePropertyChanged("Useraccount");}
        }
    }
}