public IHttpActionResult Cancelreservation(int transid, DateTime cancel_date)
{
try
{
var trans = db.Transactions.Where(x => x.transaction_id == transid).FirstOrDefault();
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (trans != null)
{
trans.cancellation_status = true;
db.Entry(trans).State = EntityState.Modified;
var pass = from p in db.passengers
where p.transaction_id == transid
select p;
foreach (var p in pass)
{
db.passengers.Remove(p);
}
cancellation can = new cancellation();
can.transaction_id = transid;
can.cancellation_date = cancel_date;
can.cancellation_amount = trans.amount / 4;
db.cancellations.Add(can);
try
{
db.SaveChanges();
}
catch (DbUpdateException)
{
return(NotFound());
}
return(Ok(can));
}
else
{
return(BadRequest("Transaction Id does not exist"));
}
}
catch (Exception ex)
{
return(BadRequest(ex.ToString()));
}
}
=> (accessQueue ?? throw new ArgumentNullException(nameof(accessQueue))).AccessAsync(accesses,
priority,
cancellation,
attemptsCount,
enqueueAll);
?.EnqueueAsyncWork(work, priority, cancellation, attemptsCount) ?? provider.RequiredService <IWorkQueue>().EnqueueAsyncWork(work, cancellation, attemptsCount);
?.EnqueueAsyncAccess(access, priority, cancellation, attemptsCount) ?? provider.RequiredService <IAccessQueue <TResource> >().EnqueueAsyncAccess(access, cancellation, attemptsCount);
=> (conveyor ?? throw new ArgumentNullException(nameof(conveyor))).ProcessDataAsync(data, priority, cancellation, attemptsCount, enqueueAll);
?.ProcessDataAsync(data, priority, cancellation, attemptsCount) ?? provider.RequiredService <IConveyor <TData, TResult> >().ProcessDataAsync(data, cancellation, attemptsCount);
=> (queue ?? throw new ArgumentNullException(nameof(queue))).DoWorkAsync(works, priority, cancellation, attemptsCount, enqueueAll);