Total View Validation

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;

namespace GlobalWPFValidation
{
    /// <summary>
    /// Validation code for Window1
    /// </summary>
    public class Window1Validator
    {
        #region Data
        private Window1ViewModel window1ViewModel { get; set; }
        #endregion

        #region Ctor
        public Window1Validator(Window1ViewModel window1ViewModel)
        {
            this.window1ViewModel = window1ViewModel;
        }
        #endregion

        #region Public Methods
        public void Validate()
        {
            ObservableCollection<ValidationFailure> localValidationErrors= 
                new ObservableCollection<ValidationFailure>();

            #region Validate CurrentPerson1

            if (window1ViewModel.CurrentPerson1.Age < 0)
                localValidationErrors.Add(
                    new ValidationFailure("Age1", 
                        "Person 1 Age cant be < 0"));

            if (window1ViewModel.CurrentPerson1.Age > 65 
                && window1ViewModel.CurrentPerson1.IsAbleToVote)
                localValidationErrors.Add(
                    new ValidationFailure("Age1", 
                        "Person 1 Age, You can't vote > 65"));

            if (window1ViewModel.CurrentPerson1.FirstName == String.Empty)
                localValidationErrors.Add(
                    new ValidationFailure("FirstName1", 
                        "Person 1 FirstName can't be empty"));

            if (window1ViewModel.CurrentPerson1.LastName == String.Empty)
                localValidationErrors.Add(
                    new ValidationFailure("LastName1", 
                        "Person 1 LastName can't be empty"));
            

            #endregion

            #region Validate CurrentPerson2

            if (window1ViewModel.CurrentPerson1.Age < 18 
                && window1ViewModel.CurrentPerson2.Age == 0)
                localValidationErrors.Add(
                    new ValidationFailure(
                        "Age2", 
                        "Person 2 Age cant be < 0 if Person1 Age < 18"));

            if (window1ViewModel.CurrentPerson2.Age > 65 
                && window1ViewModel.CurrentPerson2.IsAbleToVote)
                localValidationErrors.Add(
                    new ValidationFailure("Age2", 
                        "Person 2, You can't vote > 65"));

            if (window1ViewModel.CurrentPerson2.FirstName == String.Empty)
                localValidationErrors.Add(
                    new ValidationFailure("FirstName2", 
                        "Person 2 FirstName can't be empty"));

            if (window1ViewModel.CurrentPerson2.LastName == String.Empty)
                localValidationErrors.Add(
                    new ValidationFailure("LastName2", 
                        "Person 2 LastName can't be empty"));


            #endregion

            window1ViewModel.ValidationErrors = localValidationErrors;
        }
        #endregion
    }
}