Create in ToolStrip and other form

[Tengkorak]

I have 3 form :
* MDIForm (Main Menu)
* frmMemberList (To Display Member List)
* frmMember (To CRUD Member)

In MDIForm I have ToolStrip where there some buttons (add, modify, delete, preview and close)

I want to create an event where if you click the Add button he will call frmMember

[cicatrix]

Please, define, do you need a new instance of frmMember of the existing one (if any)?

For a new one:

Private Sub ButtonAdd_Click(ByVal sender As Object, ByVal e As EventArgs) Handles ButtonAdd.Click
    Dim f As New frmMember
    f.Show()
End Sub

[Grimfort]

Without going down the interface root and to keep it simple, you check the type of the current selected child using Form.ActiveMDIChild. You can then call a method on that form by casting it first. Something like this:

If TypeOf Me.ActiveMdiChild Is frmMember Then
   DirectCast(Me.ActiveMdiChild,frmMember).AddEntry 
End If