calendar perio in dropdown for current month only appearing two times?

Hi,

In my dropdown the current month generates two times.How to avoid- help me to fix this. "Jul 2020" duplicate.

//Controller
public ActionResult Billing(BillingManagerQueryParameters query)
{
if (_logger.IsInfoEnabled)
{
MethodBase m = MethodBase.GetCurrentMethod();
_logger.LogInfo(string.Format("Entering {0} with calendarPeriodId:{1} workflowGroupId:{2} companyId:{3}", m.Name, query.CalendarPeriodId, query.WorkflowGroupId, query.CompanyId));
}
CalendarPeriod period;
bool locked = false;
User user = null;
using (var dbContextScope = _dbContextScopeFactory.CreateReadOnly())
{
user = _Login.GetCurrentUser();
var calendarRepo = new CalendarPeriodRepository(_ambientDbContextLocator);
Customer customer = _wfRepo.FindBy(uc => uc.UserId == user.UserId, new[] { "Customer" }).FirstOrDefault().Customer;
if (query.CalendarPeriodId == null || query.CalendarPeriodId == 0)
{
period = calendarRepo.GetCalendarPeriod(PeriodType.M, DateTime.Now, customer.Id);
//get last month available if there are calendar periods but just not one for the current month
if (period == null)
{
period = calendarRepo.GetLastMonthAvailablePeriod(PeriodType.M, DateTime.Now, customer.Id);
}
locked = false; // TODO: Delete CustCalendarPeriod period.CustomerCalendarPeriods.Where(x => x.CustomerCUSTOMER_ID == customer.CUSTOMER_ID).FirstOrDefault().CLOSED_FLAG == "Y" ? true : false;
query.CalendarPeriodId = period.Id;
}
else
{
period = calendarRepo.GetCalendarPeriod((int)query.CalendarPeriodId);
Debug.WriteLine("Checked period lock " + period.Id);
locked = false; // TODO: Delete CustCalendarPeriod period.CustomerCalendarPeriods.Where(x => x.CustomerCUSTOMER_ID == customer.CustomerId).FirstOrDefault().CLOSED_FLAG == "Y" ? true : false;
//Debug.WriteLine("Locked " + period.CustomerCalendarPeriods.Where(x => x.CustomerCUSTOMER_ID == customer.CustomerId).FirstOrDefault().CLOSED_FLAG);
//currentPeriod = calendarRepo.GetCalendarPeriod(PeriodType.M, DateTime.Now);
}
}
//Check if there are not any calendar periods in database, Show off a useful message to user to add Calendar Period for Monthly
if (period == null)
{
if (_logger.IsInfoEnabled)
_logger.LogInfo("Exiting Billing");
return View("~/Areas/Billing/Views/Manage/Modals/AddCalendarPeriodMonthlyModal.cshtml");
}
SelectList periods = CreateBillingPeriodSelectList(period);
var customerId = GetCustomerId();
SelectListItemHelper selectListItemHelper = new SelectListItemHelper();
SelectList companyList = selectListItemHelper.CompaniesByUser(customerId,user,true);
SelectList wgList = selectListItemHelper.WorkflowGroupsByUser(customerId,user,true);
// Build the model
BillingViewModel model = new BillingViewModel()
{
Query = query,
CurrentPeriod = period,
WorkflowGroups = selectListItemHelper.WorkflowGroupsByUser(customerId,user,true),
Companies = selectListItemHelper.CompaniesByUser(customerId,user,true),
BillingPeriods = periods,
CurrentPeriodLocked = locked,
};
return View(model);
}

public CalendarPeriod GetCalendarPeriod(PeriodType type, DateTime date, int customerId)
{
return DbContext.CalendarPeriods
.Where(x => x.TypeCode == type.SmartCode &
x.StartDate <= date & x.EndDate >= date.Date &&
x.CalendarPeriodType.CustomerId == customerId
)
.FirstOrDefault();
}
public CalendarPeriod GetLastMonthAvailablePeriod(PeriodType type, DateTime date, int customerId)
{
int prevMonth = date.AddMonths(-1).Month;
return DbContext.CalendarPeriods
.Where(x => x.TypeCode == type.SmartCode &
x.StartDate.Month <= prevMonth & x.EndDate.Month <= prevMonth &&
x.CalendarPeriodType.CustomerId == customerId)
.FirstOrDefault();
}
public CalendarPeriod GetCalendarPeriod(int id)
{
return DbContext.CalendarPeriods.Find(id);
}
private SelectList CreateBillingPeriodSelectList(CalendarPeriod period)
{
var calendarRepo = new Repositories.CalendarPeriodRepository(_ambientDbContextLocator);
var billingRepo = new Repositories.BillingRepository(_ambientDbContextLocator);
int customerId = GetCustomerId();
using (var dbContextScope = _dbContextScopeFactory.CreateReadOnly())
{
List periodsAvailable = new List();
periodsAvailable.AddRange(calendarRepo.GetBillingPeriods(customerId));
if (!periodsAvailable.Contains(period)) { periodsAvailable.Insert(0, period); }
SelectList monthList = new SelectList(periodsAvailable.Select(x => new { x.Id, x.Name }), "Id", "Name");
return monthList;
}
}
public List GetBillingPeriods(int customerId)
{
DateTime endDate = DateTime.Now.AddDays(15);
return DbContext.CalendarPeriods
.Where(x => x.TypeCode == PeriodType.M.SmartCode &&
//x.StartDate >= startDate &&
x.StartDate <= endDate &&
x.VisibleToBilling &&
x.CalendarPeriodType.CustomerId == customerId)
.OrderByDescending(x => x.EndDate)
.ToList();
}