public string Save(Student student)
{
if (aStudentGateway.DoesStudentExist(student.Email))
{
return("This email already exists");
}
Department aDepartment = aDepartmentGateway.GetDepartmentById(student.DepartmentId);
student.DepartmentCode = aDepartment.Code;
int roll = 0;
if (aStudentGateway.DoesBatchExist(student.DepartmentCode, student.Date))
{
roll = aStudentGateway.GetLastRoll(student.DepartmentCode, student.Date);
roll++;
}
else
{
roll = 1;
}
student.Roll = roll;
int rowAffected = aStudentGateway.Save(student);
if (rowAffected > 0)
{
return("Registration Successful");
}
return("Registration Failed");
}