How to get member node's checked status while loading element editor?

protected void Page_Load(object sender, EventArgs e)
{
    this.OlapClient1.MemberEditorLoading += OlapClient1_MemberEditorLoading;             
}
void OlapClient1_MemberEditorLoading(object sender, MemberEditorLoadingEventArgs e)
{
    var nodeState = e.Node.Checked; //Use this code to get the checked status of each node. 
}

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
 AddHandler Me.OlapClient1.MemberEditorLoading, AddressOf OlapClient1_MemberEditorLoading
End Sub
Private Sub OlapClient1_MemberEditorLoading(ByVal sender As Object, ByVal e As MemberEditorLoadingEventArgs)
 Dim nodeState = e.Node.Checked 'Use this code to get the checked status of each node.
End Sub