Car Business Logic

Imports System.ComponentModel
Imports System.Collections.ObjectModel
Public Class CarsBusinessLogic
    Public Function GetCars() As ObservableCollection(Of Car)
        Dim carList As New ObservableCollection(Of Car)()
        carList.Add(New Car("Dodge", "Ram", 22050, 153))
        carList.Add(New Car("Ford", "Explorer", 27175, 96))
        carList.Add(New Car("BMW", "Z4", 35600, 42))
        carList.Add(New Car("Toyota", "Camry", 20790.99, 131))
        Return carList
    End Function
End Class
Public Class Car
    Implements INotifyPropertyChanged
    Private m_make As String
    Private m_model As String
    Private m_baseprice As Double
    Private m_mileage As Integer
    Public Sub New()
    End Sub
    Public Sub New(ByVal make As String, ByVal model As String, ByVal baseprice As Double, ByVal mileage As Integer)
        Me.Make = make
        Me.Model = model
        Me.BasePrice = baseprice
        Me.Mileage = mileage
    End Sub
    Public Property Make() As String
        Get
            Return m_make
        End Get
        Set(ByVal value As String)
            If m_make <> value Then
                m_make = value
                OnPropertyChanged("Make")
            End If
        End Set
    End Property
    Public Property Model() As String
        Get
            Return m_model
        End Get
        Set(ByVal value As String)
            If m_model <> value Then
                m_model = value
                OnPropertyChanged("Model")
            End If
        End Set
    End Property
    Public Property BasePrice() As Double
        Get
            Return m_baseprice
        End Get
        Set(ByVal value As Double)
            If m_baseprice <> value Then
                m_baseprice = value
                OnPropertyChanged("BasePrice")
            End If
        End Set
    End Property
    Public Property Mileage() As Integer
        Get
            Return m_mileage
        End Get
        Set(ByVal value As Integer)
            If m_mileage <> value Then
                m_mileage = value
                OnPropertyChanged("Mileage")
            End If
        End Set
    End Property
#Region "INotifyPropertyChanged Members"
    Public Event PropertyChanged(ByVal sender As Object, ByVal e As System.ComponentModel.PropertyChangedEventArgs) Implements System.ComponentModel.INotifyPropertyChanged.PropertyChanged
    Private Sub OnPropertyChanged(ByVal info As String)
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(info))
    End Sub
#End Region
End Class

using System;
using System.Collections.ObjectModel;
using System.ComponentModel;
namespace IGDocumentation
{
    public class CarsBusinessLogic
    {
        public ObservableCollection<Car> GetCars()
        {
            ObservableCollection<Car> carList = new ObservableCollection<Car>();
            carList.Add(new Car("Dodge", "Ram", 22050.00, 153));
            carList.Add(new Car("Ford", "Explorer", 27175.00, 96));
            carList.Add(new Car("BMW", "Z4", 35600.00, 42));
            carList.Add(new Car("Toyota", "Camry", 20790.99, 131));
            return carList;
        }
    }
    public class Car : INotifyPropertyChanged
    {
        string m_make;
        string m_model;
        double m_baseprice;
        int m_mileage;
        public Car()
        {
        }
        public Car(string make, string model, double baseprice, int mileage)
        {
            this.Make = make;
            this.Model = model;
            this.BasePrice = baseprice;
            this.Mileage = mileage;
        }
        public string Make
        {
            get { return m_make; }
            set
            {
                if (m_make != value)
                {
                    m_make = value;
                    OnPropertyChanged("Make");
                }
            }
        }
        public string Model
        {
            get { return m_model; }
            set
            {
                if (m_model != value)
                {
                    m_model = value;
                    OnPropertyChanged("Model");
                }
            }
        }
        public double BasePrice
        {
            get { return m_baseprice; }
            set
            {
                if (m_baseprice != value)
                {
                    m_baseprice = value;
                    OnPropertyChanged("BasePrice");
                }
            }
        }
        public int Mileage
        {
            get { return m_mileage; }
            set
            {
                if (m_mileage != value)
                {
                    m_mileage = value;
                    OnPropertyChanged("Mileage");
                }
            }
        }
        #region INotifyPropertyChanged Members
        public event PropertyChangedEventHandler PropertyChanged;
        private void OnPropertyChanged(String info)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(info));
            }
        }
        #endregion
    }
}