NotSupportedException:Custom calendars are not currently supported.

Question

It is possible to create my own Calendar classes by inheriting from the Calendar class and then implementing all of the Calendar classes' abstract members. The problem is that when you attempt to assign this new Calendar to the an Exception is thrown:

CultureAndRegionInfoBuilder builder = new CultureAndRegionInfoBuilder(culrureName, CultureAndRegionModifiers.Replacement);
            CultureInfo c = new CultureInfo(culrureName);
            List<Calendar> list = new List<Calendar>();
            PersianCalendar persianCalendar = new PersianCalendar();
            list.Add(persianCalendar);
            list.AddRange(c.OptionalCalendars);
            builder.AvailableCalendars = list.ToArray();
            DateTimeFormatInfo info = builder.GregorianDateTimeFormat;
            //itPersianDateTimeFormat(info);
            builder.GetType().GetField("m_defaultCalendar", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).SetValue(builder, persianCalendar);
            builder.Register();

the exception is:

NotSupportedException:Custom calendars are not currently supported.
i search all the internet and i can find one article that say it is because of domain safety check . anyone can help me to solve it?

Amrollah Neamati · Answer

I want to Add a new calendar to AvailableCalendars of .Net Framework to access it in other .net based applications of windows. my calendar have different calculation rules.it is not JulianCalendar  ChineseLunisolarCalendar  GregorianCalendar.... these calendars is on CultureAndRegionInfoBuilder . AvailableCalendars array.i want to define new calendar type with different calculation rules/methods and add it to CultureAndRegionInfoBuilder . AvailableCalendars and register it on .net  then other .net applications in windows can use it.

Sam Hobbs · Answer

Can you provide a sample of the class you derive from the Calendar control? It will really help if you create a sample of the derived control that is the smallest possible that re-creates the problem and then post that small sample in a reply here.