protected override void OnAfterRender(bool firstRender)
 {
     try
     {
         //Function to check if XML file exists or not if it does exist load data into customers list if it does not exist create the document
         CustomerDatabase.LoadCustomerData(Configuration.CustomerFileLocation);
         //Function to see if Lash Data config file exists
         TreatmentDatabase.LoadLashData(Configuration.LashFileLocation, TreatmentDatabase.Treatments);
     }
     catch (Exception e)
     {
         Logger.Log("Intialisation: " + e.Message + e.StackTrace);
     }
     if (firstRender)
     {
         // Do work to load page data and set properties
     }
 }