get calendarrules by servicenameid - dynamics-crm

Question

In Dynamics 365 (on premise) I need to delete Service Restrictions, Associated with a specific service. It looks like they are stored in "calendarrules", but when i try to find some info in my collection of calendarrules, I do not see any attributes similar to "ServiceNameId".
I found the information that this can be done simply by changing the entries of the calendar rule and updating the original calendar, so I try to do it as follows, but can't see attributes referring me to services.
I get the collection as follows:
SystemUser user = service.Retrieve(SystemUser.EntityLogicalName, UserId, new ColumnSet("calendarid")).ToEntity<SystemUser>();
Calendar userCalendar = service.Retrieve(Calendar.EntityLogicalName, user.CalendarId.Id, new ColumnSet(true)).ToEntity<Calendar>();
EntityCollection entityCollection = (EntityCollection)userCalendar.Attributes["calendarrules"];

Answer 1

Ok, it can be found on innercalendars and updated by this way:
SystemUser user = service.Retrieve(SystemUser.EntityLogicalName, serviceappointment.OwnerId.Id, new ColumnSet("calendarid")).ToEntity<SystemUser>();
Calendar userCalendar = service.Retrieve(Calendar.EntityLogicalName, user.CalendarId.Id, new ColumnSet(true)).ToEntity<Calendar>();
EntityCollection entityCollection = (EntityCollection)userCalendar.Attributes["calendarrules"];
foreach (Entity ent in entityCollection.Entities)
{
int num = 0;
Entity newEntity = service.Retrieve("calendar", ((EntityReference)ent.Attributes["innercalendarid"]).Id, new ColumnSet(true));
EntityCollection calendarRules = (EntityCollection)newEntity.Attributes["calendarrules"];
List<int> list = new List<int>();
foreach (CalendarRule cr in calendarRules.Entities)
{
if (cr.ServiceId != null)
{
list.Add(num);
}
num++;
}
for (int i = 0; i < list.Count; i++)
{
calendarRules.Entities.Remove(calendarRules.Entities[list[i]]);
}
newEntity.Attributes["calendarrules"] = calendarRules;
service.Update(newEntity);
}
Perhaps there is a simpler way, but for now this is enough