How to raise an Event

I'm currently learning about raising events and remembered your question. This isn't exactly what you asked but it has similar functionality. It's just a test program so is very simple but you could change it to suit your needs.

I have a Windows form (Form1) with a panel (Panel1) and two buttons (Button1 and Button2) placed in the panel. When the form loads I set the panel background colour. Then the colour changes depending on which button is clicked. Of course the colour changes could be handled directly in the Button.Click events, but then we wouldn't learn anything!

Imports System.Drawing

Public Class Form1

    Public WithEvents mColour As tstChangeColour


    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Panel1.BackColor = Color.Azure  ' Start off with this colour
        mColour = New tstChangeColour   ' Create new instance
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        mColour.selectColour(Color.DarkTurquoise)  ' Uses delegate to raise event
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        mColour.selectColour(Color.DarkSalmon)     ' Uses delegate to raise event
    End Sub

    Private Sub mColour_toggleColour(ByVal newCol As System.Drawing.Color) Handles mColour.toggleColour  ' Handles our event
        Me.Panel1.BackColor = newCol
    End Sub

End Class

Public Class tstChangeColour

    Public Event toggleColour(ByVal newColour As System.Drawing.Color)

    Public Sub selectColour(ByVal setColour As System.Drawing.Color)
        RaiseEvent toggleColour(setColour)
    End Sub

End Class

Hope this helps.

Instead of raising another event, why don't you just put the functionality into a common method, and call that common method from both click event handlers.

Sometimes, the simplest approach is - well - the simplest approach.