Comments (3)
Hello,
it seems as if the exception comes from ChangeCalendar
method in Calendar.cs
from the method FirstOrDefault
. The only use of this method is
sd = SpecialDates.FirstOrDefault(s => s.Date.Date == start.Date);
So it seems as if the SpecialDates
list is change will the the render method is running, List are not thread safe which is why you probably getting this exception (ThrowInvalidOperationException => Collection was modified).
By default the SpecialDates
list is a List<SpecialDate>
, but it can be everything that implements ICollection<T>
. Either you do not add SpecialDate when calendar.Content == null
(then the calendar is drawn) or use a Thread safe List.
I do not use a Thread safe list by default, because it needs to clone the list every time a iterator is use (which can impact memory and performance very heavily).
Hoop this helps ;)
from xamforms.controls.calendar.
Thanks for the Help I will try that and let you know!
from xamforms.controls.calendar.
Hello,
it seems as if the exception comes from
ChangeCalendar
method inCalendar.cs
from the methodFirstOrDefault
. The only use of this method is
sd = SpecialDates.FirstOrDefault(s => s.Date.Date == start.Date);
So it seems as if the
SpecialDates
list is change will the the render method is running, List are not thread safe which is why you probably getting this exception (ThrowInvalidOperationException => Collection was modified).By default the
SpecialDates
list is aList<SpecialDate>
, but it can be everything that implementsICollection<T>
. Either you do not add SpecialDate whencalendar.Content == null
(then the calendar is drawn) or use a Thread safe List.I do not use a Thread safe list by default, because it needs to clone the list every time a iterator is use (which can impact memory and performance very heavily).
Hoop this helps ;)
@rebeccaXam it has not worked for me :(
from xamforms.controls.calendar.
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from xamforms.controls.calendar.