AddressOf with parameter

Question

One way or another I need to link groupID (and one other integer) to the button I am dynamically adding.. any ideas?

What I can do;

AddHandler mybutt         


        

Answer 1

You can use delegate which very clear for your code follow as:

Define a delegate

Public Delegate Sub ControlClickDelegate(ByVal sender As Object, ByVal e As EventArgs)

Custom button class

Public Class CustomButton
    Inherits System.Windows.Forms.Button
#Region "property delegate"

    Private controlClickDelegate As ControlClickDelegate

    Public Property ClickHandlerDelegate As ControlClickDelegate
        Get
            Return controlClickDelegate
        End Get
        Set(ByVal Value As ControlClickDelegate)
            controlClickDelegate = Value
        End Set
    End Property

#End Region

    Public Sub RegisterEventHandler()
        AddHandler Me.Click, AddressOf OnClicking
    End Sub

    Private Sub OnClicking(ByVal sender As Object, e As System.EventArgs)
        If (Me.controlClickDelegate IsNot Nothing) Then
            Me.controlClickDelegate(sender, e)
        End If
    End Sub

End Class

MainForm

Public Class MainForm
    Public Sub New()

        ' This call is required by the designer.
        InitializeComponent()

        ' Add any initialization after the InitializeComponent() call.

        Me.CusButton1.ClickHandlerDelegate = AddressOf Me.btnClick
        Me.CusButton1.RegisterEventHandler()
    End Sub

    Private Sub btnClick(ByVal sender As Object, ByVal e As EventArgs)
        Me.TextBox1.Text = "Hello world"
        End Sub

End Class