public RegisterStudentModel Registernumber(RegisterStudentModel registerStudent)
{
string departmentCode = _departmentGateway.GateDepartmentCodeByDepartmentId(registerStudent.DepartmentId);
List <RegisterStudentModel> student =
_registerStudentGateway.GateStudentByDepartmentId(registerStudent.DepartmentId);
string year = registerStudent.Date.ToString("yyyy");
int yearcount = 0;
int count = student.Count;
if (count != 0)
{
foreach (var studentList in student)
{
string regYear = studentList.Date.ToString("yyyy");
if (regYear == year)
{
yearcount++;
}
}
}
yearcount++;
registerStudent.RegistationNumber = departmentCode + "-" + year + "-" + yearcount.ToString().PadLeft(3, '0');
return(registerStudent);
}