Question

Is there a way to set the selected tab of a tabControl without the selectedIndexchanged event firing?

e.g. Here the event fires when selecting myTabPage2 because myTabPage1 is the default:

Private Sub setupTabControl
    If blnHasAccount=true then
       MyTabControl.selectedTab=myTabPage1
    else
       MyTabControl.selectedTab=myTabPage2
    End if
End sub

Private Sub MyTabControl_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyTabControl.SelectedIndexChanged
    'Do stuff (but only when user has actually changed the tab themselves)
End Sub

Answer 1

When you set the new tabpage you could remove the event handler

Try
    RemoveHandler MyTabControl.SelectedIndexChanged, AddressOf Me.MyTabControl_SelectedIndexChanged
    .. do your works to change page here
    .. and then reconnect
Finally
    AddHandler MyTabControl.SelectedIndexChanged, AddressOf Me.MyTabControl_SelectedIndexChanged
End Try

It’s important to enclose everything in a Try Finally to recover correctly from exceptions