public static OnePageClientViewModel GetInstance()
        {
            if (OnePageClientViewModel.singletonInstance == null)
            {
                OnePageClientViewModel.singletonInstance = new OnePageClientViewModel(true);
            }

            return(OnePageClientViewModel.singletonInstance);
        }
 public OnePageClientViewModel()
 {
     if (OnePageClientViewModel.singletonInstance != null)
     {
         this.P24         = OnePageClientViewModel.singletonInstance.P24;
         this.Transaction = new Transaction(this.P24);
     }
     else
     {
         AllConstructorsOpetarions();
         OnePageClientViewModel.singletonInstance = this;
     }
     // Test Data - to Delete
     numberOfInstanes++;
     this.InstanceNumber = numberOfInstanes;
 }