Customer Data

Imports System.Collections.ObjectModel
Imports System.ComponentModel
Public NotInheritable Class CustomerData
    Private Sub New()
    End Sub
    Public Shared Function GetCustomers() As ObservableCollection(Of Customer)
        Dim list As New ObservableCollection(Of Customer)()
        'Add Customers to the ObservableCollection using Object Initializers.
        list.Add(New Customer With {.ID = 123, .FullName = New Name With {.FirstName = "John", .LastName = "Smith"}})
        list.Add(New Customer With {.ID = 456, .FullName = New Name With {.FirstName = "John", .LastName = "Smith"}})
        list.Add(New Customer With {.ID = 789, .FullName = New Name With {.FirstName = "Mary", .LastName = "Smith"}})
        'You can still use the old way of creating objects, setting properties, and then adding them to the collection as shown in the commented code below.
        'Customer customer;
        'Name name;
        'customer = new Customer();
        'customer.ID = 123;
        'name = new Name();
        'name.FirstName = "John";
        'name.LastName = "Smith";
        'customer.FullName = name;
        'list.Add(customer);
        'customer = new Customer();
        'customer.ID = 456;
        'name = new Name();
        'name.FirstName = "Mike";
        'name.LastName = "Smith";
        'customer.FullName = name;
        'list.Add(customer);
        'customer = new Customer();
        'customer.ID = 789;
        'name = new Name();
        'name.FirstName = "Mary";
        'name.LastName = "Smith";
        'customer.FullName = name;
        'list.Add(customer);
        Return list
    End Function
End Class
Public Class Customer
    Implements INotifyPropertyChanged
    Private _id As Integer
    Public Property ID() As Integer
        Get
            Return _id
        End Get
        Set(ByVal value As Integer)
            If _id <> value Then
                _id = value
                OnPropertyChanged("ID")
            End If
        End Set
    End Property
    Private _fullName As Name
    Public Property FullName() As Name
        Get
            Return _fullName
        End Get
        Set(ByVal value As Name)
            If _fullName <> value Then
                _fullName = value
                OnPropertyChanged("FullName")
            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
#End Region
    Private Sub OnPropertyChanged(ByVal propertyName As String)
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(propertyName))
    End Sub
End Class
Public Class Name
    Implements INotifyPropertyChanged
    Private _firstName As String
    Public Property FirstName() As String
        Get
            Return _firstName
        End Get
        Set(ByVal value As String)
            _firstName = value
            OnPropertyChanged("FirstName")
        End Set
    End Property
    Private _lastName As String
    Public Property LastName() As String
        Get
            Return _lastName
        End Get
        Set(ByVal value As String)
            _lastName = value
            OnPropertyChanged("LastName")
        End Set
    End Property
#Region "Overrides"
    Public Shared Operator =(ByVal a As Name, ByVal b As Name) As Boolean
        If Object.ReferenceEquals(a, Nothing) AndAlso Object.ReferenceEquals(b, Nothing) Then
            Return True
        ElseIf Object.ReferenceEquals(a, Nothing) OrElse Object.ReferenceEquals(b, Nothing) Then
            Return False
        End If
        Return a.FirstName = b.FirstName AndAlso a.LastName = b.LastName
    End Operator
    Public Shared Operator <>(ByVal a As Name, ByVal b As Name) As Boolean
        Return Not (a = b)
    End Operator
    Public Overloads Overrides Function Equals(ByVal obj As Object) As Boolean
        Dim b As Name = TryCast(obj, Name)
        Return Me = b
    End Function
    Public Overloads Overrides Function GetHashCode() As Integer
        Return (Me.FirstName + " " + Me.LastName).GetHashCode()
    End Function
#End Region
#Region "INotifyPropertyChanged Members"
    Public Event PropertyChanged(ByVal sender As Object, ByVal e As System.ComponentModel.PropertyChangedEventArgs) Implements System.ComponentModel.INotifyPropertyChanged.PropertyChanged
#End Region
    Private Sub OnPropertyChanged(ByVal propertyName As String)
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(propertyName))
    End Sub
End Class

using System.Collections.ObjectModel;
using System.ComponentModel;
namespace IGDocumentation
{
    public static class CustomerData
    {
        public static ObservableCollection<Customer> GetCustomers()
        {
            ObservableCollection<Customer> list = new ObservableCollection<Customer>();
            //Add Customers to the ObservableCollection using Object Initializers.
            list.Add(new Customer { ID = 123, FullName = new Name { FirstName = "John", LastName = "Smith" } });
            list.Add(new Customer { ID = 456, FullName = new Name { FirstName = "John", LastName = "Smith" } });
            list.Add(new Customer { ID = 789, FullName = new Name { FirstName = "Mary", LastName = "Smith" } });
            //You can still use the old way of creating objects, setting properties, and then adding them to the collection as shown in the commented code below.
            //Customer customer;
            //Name name;
            //customer = new Customer();
            //customer.ID = 123;
            //name = new Name();
            //name.FirstName = "John";
            //name.LastName = "Smith";
            //customer.FullName = name;
            //list.Add(customer);
            //customer = new Customer();
            //customer.ID = 456;
            //name = new Name();
            //name.FirstName = "Mike";
            //name.LastName = "Smith";
            //customer.FullName = name;
            //list.Add(customer);
            //customer = new Customer();
            //customer.ID = 789;
            //name = new Name();
            //name.FirstName = "Mary";
            //name.LastName = "Smith";
            //customer.FullName = name;
            //list.Add(customer);
            return list;
        }
    }
    public class Customer:INotifyPropertyChanged
    {
        private int _id;
        public int ID
        {
            get { return _id; }
            set
            {
                if (_id != value)
                {
                    _id = value;
                    OnPropertyChanged("ID");
                }
            }
        }
        private Name _fullName;
        public Name FullName
        {
            get { return _fullName; }
            set
            {
                if (_fullName != value)
                {
                    _fullName = value;
                    OnPropertyChanged("FullName");
                }
            }
        }
        #region INotifyPropertyChanged Members
        public event PropertyChangedEventHandler PropertyChanged;
        #endregion
        private void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }
    public class Name:INotifyPropertyChanged
    {
        private string _firstName;
        public string FirstName
        {
            get { return _firstName; }
            set
            {
                _firstName = value;
                OnPropertyChanged("FirstName");
            }
        }
        private string _lastName;
        public string LastName
        {
            get { return _lastName; }
            set
            {
                _lastName = value;
                OnPropertyChanged("LastName");
            }
        }
        #region Overrides
        public static bool operator ==(Name a, Name b)
        {
            if (object.ReferenceEquals(a, null) && object.ReferenceEquals(b, null))
            {
                return true;
            }
            else if (object.ReferenceEquals(a, null) || object.ReferenceEquals(b, null))
            {
                return false;
            }
            return a.FirstName == b.FirstName && a.LastName == b.LastName;
        }
        public static bool operator !=(Name a, Name b)
        {
            return !(a == b);
        }
        public override bool Equals(object obj)
        {
            Name b = obj as Name;
            return this == b;
        }
        public override int GetHashCode()
        {
            return (this.FirstName + " " + this.LastName).GetHashCode();
        }
        #endregion
        #region INotifyPropertyChanged Members
        public event PropertyChangedEventHandler PropertyChanged;
        #endregion
        private void OnPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}