WPF Radgridview with ObservableCollection and INotifyPropertyChanged - wpf

Question

Despite the many online tutorials, I still do not quite understand how this is supposed to work. I have a radgridview where the user can enter an address per row. I want them to enter the zip code first. The city and state will be supplied from a database matching the zip code. So the radgridview must be updated as soon as the zip code is entered.
It appears that using INotifyProperty is the way to go. I can get the collection to update but cannot get the datagrid to update.
View Model:
Public Class ShipTo
Implements INotifyPropertyChanged
Public Event PropertyChanged As PropertyChangedEventHandler Implements INotifyPropertyChanged.PropertyChanged
Private Sub NotifyPropertyChanged(ByVal info As String)
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(info))
End Sub
Public Property shipAddressType As String = String.Empty
Public Property orderID As String = String.Empty
Public Property shipName As String = String.Empty
Public Property shipAddr1 As String = String.Empty
Public Property shipAddr2 As String = String.Empty
Private _shipCity As String
Public Property shipCity As String
Get
Return _shipCity
End Get
Set(value As String)
_shipCity = value
NotifyPropertyChanged("shipZip")
End Set
End Property
Private _shipState As String
Public Property shipState As String
Get
Return _shipState
End Get
Set(value As String)
_shipState = value
NotifyPropertyChanged("shipZip")
End Set
End Property
Public Property shipZip As String = String.Empty
Code to find City and State:
Dim shipCS As New ShipTo
shipCS.shipCity = GetCityAndState.CityLookup(CStr(CType(dgShippingAddresses.SelectedItem, ShipTo).shipZip))
shipCS.shipState = GetCityAndState.StateLookup(CStr(CType(dgShippingAddresses.SelectedItem, ShipTo).shipZip))
XAML:
Any help appreciated. Thanks.

Answer 1

I finally got this to work well. For anyone else who is struggling here is my solution:
Private _shipSelected As Boolean
Public Property shipSelected As Boolean
Get
Return _shipSelected
End Get
Set(value As Boolean)
_shipSelected = value
NotifyPropertyChanged("shipSelected")
End Set
End Property
Public Property shipAddressType As String = String.Empty
Public Property orderID As String = String.Empty
Public Property shipName As String = String.Empty
Public Property shipAddr1 As String = String.Empty
Public Property shipAddr2 As String = String.Empty
Private _shipCity As String
Public Property shipCity As String
Get
Return _shipCity
End Get
Set(value As String)
_shipCity = value
NotifyPropertyChanged("shipCity")
End Set
End Property
Private _shipState As String
Public Property shipState As String
Get
Return _shipState
End Get
Set(value As String)
_shipState = value
NotifyPropertyChanged("shipState")
End Set
End Property
Private _shipZip As String
Public Property shipZip As String
Get
Return _shipZip
End Get
Set(value As String)
_shipZip = value
shipCity = GetCityAndState.CityLookup(_shipZip)
shipState = GetCityAndState.StateLookup(_shipZip)
NotifyPropertyChanged("shipZip")
End Set
End Property
Now when the zip is entered in the datagrid, the city and state automatically update.