/// <summary>
/// Adds recurring appointments.
/// </summary>
/// <param name="item">The recurring appointment definition.</param>
/// <param name="dateLimit">A date limit at which the recurring appointments end.</param>
/// <remarks> The date limit may be dateTime.MaxValue which indicates no limit.</remarks>
public void AddNewRecurringAppointments(IRecurringScheduleAppointment item, DateTime dateLimit)
{
string[] rulesArray = item.RecurrenceRule.Split(new char[] { RecurrenceSupport.RuleDelimiter });
DateTime baseDate = DateTime.Parse(rulesArray[0]);
DateTime date = rulesArray[1].Length > 0 ? DateTime.Parse(rulesArray[1]) : dateLimit;
if (item.DateList == null)
{ //if null, then need to create it.
CreateDateListFromItem(item);
//conditionally set terminal date if present in rule.
if (rulesArray[1].Length > 0)
{
item.DateList.TerminalDate = date;
}
}
item.DateList.IsValidRecurrence(date); //this populates DateList up through date
bool needToSort = false;
foreach (DateTime dt in item.DateList)
{ //now go through and add appointments that match the datelist entries
if (dt >= item.DateList.BaseDate && dt <= item.DateList.TerminalDate)
{
AddAppointmentFromItem(item, dt);
needToSort = true;
}
}
if (needToSort)
{
ResetBaseDate(item);
MasterList.SortStartTime();
}
}
/// <summary>
/// Used after the inital load to add additional recurring appointments to the dataprovider.
/// </summary>
/// <param name="date">The recurring appointment definition.</param>
/// <returns>True if dates were added.</returns>
/// <remarks>Dynamically provide appointments on demand as new dates are exposed.</remarks>
public bool CheckAndAddIfNeededRecurringAppointments(DateTime date)
{
bool ret = false;
foreach (IRecurringScheduleAppointment item in RecurringList)
{
if (item.DateList == null && item.RecurrenceRule != null && item.RecurrenceRule.Length > 0)
{ //create initial DateList and add any appointments
CreateDateListFromItem(item);
AddNewRecurringAppointments(item, item.DateList.BaseDate);
}
RecurrenceList list = item.DateList;
if (list != null)
{
//now loop thru and add appointments if needed
DateTime date1 = date.CompareTo(list.TerminalDate) > 0 ? list.TerminalDate : date;
if (date1.CompareTo(list[list.Count - 1]) > 0)
{
//need to add
int start = list.Count;
list.IsValidRecurrence(date1);
bool needToSort = false;
while (start < list.Count)
{
date1 = list[start];
if (date1 >= item.DateList.BaseDate && date1 <= item.DateList.TerminalDate)
{
AddAppointmentFromItem(item, date1);
needToSort = true;
}
start++;
}
if (needToSort)
{
ResetBaseDate(item);
MasterList.SortStartTime();
ret = true;
}
}
}
}
return(ret);
}
