User Control and Binding - vb.net

Question

I've created a custom control which consists of two radio buttons with their appearance set to "Button". This control is meant to act like two toggle buttons with an "On" toggle button and an "Off" toggle button. I have a public boolean property "isAOn" which is used to set the state of both buttons and I want to be able to bind this property to boolean values. I have imported the component model and set
Now when I add this to a form for a boolean value in one of my classes it doesn't seem to update the boolean value of the class when I change the button pressed.
Advice on how to resolve this issue and constructive criticism on class design is more than welcome.
Thanks!
Here is the code:
Imports System.ComponentModel
''#
<DefaultBindingProperty("isAOn")> _
Public Class ToggleButtons
Private _isAOn As Boolean
Private _aText As String
Private _bText As String
Private _aOnColor As Color
Private _aOffColor As Color
Private _bOnColor As Color
Private _bOffColor As Color
Public Sub New()
''# This call is required by the Windows Form Designer.
InitializeComponent()
''# Add any initialization after the InitializeComponent() call.
aOffColor = Color.LightGreen
aOnColor = Color.DarkGreen
bOffColor = Color.FromArgb(255, 192, 192)
bOnColor = Color.Maroon
isAOn = False
aText = "A"
bText = "B"
End Sub
Private Sub configButtons()
If _isAOn Then
rbA.Checked = True
rbA.BackColor = _aOnColor
rbB.Checked = False
rbB.BackColor = _bOffColor
Else
rbA.Checked = False
rbA.BackColor = _aOffColor
rbB.Checked = True
rbB.BackColor = _bOnColor
End If
rbA.Text = aText
rbB.Text = bText
End Sub
Public Property isAOn() As Boolean
Get
Return _isAOn
End Get
Set(ByVal value As Boolean)
_isAOn = value
configButtons()
End Set
End Property
Private Sub rbOn_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles rbA.CheckedChanged
isAOn = rbA.Checked
End Sub
Private Sub rbOff_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles rbB.CheckedChanged
isAOn = Not rbB.Checked
End Sub
Public Property aText() As String
Get
Return _aText
End Get
Set(ByVal value As String)
_aText = value
End Set
End Property
Public Property bText() As String
Get
Return _bText
End Get
Set(ByVal value As String)
_bText = value
End Set
End Property
Public Property aOnColor() As Color
Get
Return _aOnColor
End Get
Set(ByVal value As Color)
_aOnColor = value
End Set
End Property
Public Property aOffColor() As Color
Get
Return _aOffColor
End Get
Set(ByVal value As Color)
_aOffColor = value
End Set
End Property
Public Property bOnColor() As Color
Get
Return _bOnColor
End Get
Set(ByVal value As Color)
_bOnColor = value
End Set
End Property
Public Property bOffColor() As Color
Get
Return _bOffColor
End Get
Set(ByVal value As Color)
_bOffColor = value
End Set
End Property
End Class

Answer 1

You need to add an isAOnChanged event and raise it in the property setter.
By the way, properties and methods in .Net should be UpperCamelCased.