public bool AddOperator(MobileOperator mobileOperator)
{
List <MobileOperator> mobileOperators = dataAccess.mobileOperators();
foreach (MobileOperator operatorr in mobileOperators)
{
if (operatorr.OperatorName.ToLower() == mobileOperator.OperatorName.ToLower())
{
throw new InvalidData("Please enter another operator name");
}
if (mobileOperator.OperatorRating > 5 || mobileOperator.OperatorRating < 0)
{
throw new RatingOverLoadedException("Please enter rating between 0 and 5");
}
}
DataAcces dataAccess1 = new DataAcces();
dataAccess1.AddOperator(mobileOperator);
return(true);
}