public string SaveTestType(TestType aTestType)
 {
     if (aTestGateway.CheckTestType(aTestType))
     {
         return("Type Name is already saved !");
     }
     else
     {
         int rowAffected = aTestGateway.SaveTestType(aTestType);
         if (rowAffected > 0)
         {
             return("Type Saved :)");
         }
         else
         {
             return("Type Name save failed !");
         }
     }
 }