public IResult Add(Attendance attendance, decimal fee)
{
if (checkIsEnrolledBefore(attendance))
{
try
{
_attendanceDal.Add(attendance);
if (_studentService.AddFee(attendance.StudentId, fee))
{
return(new SuccessResult("Enrolled course"));
}
else
{
return(new ErrorResult("Fee cannot be added"));
}
}
catch (Exception)
{
return(new ErrorResult("Error occurred while enrolling"));
}
}
else
{
return(new ErrorResult("Student already enrolled this course"));
}
}
