If a field has a set list of possible values, using a value outside the allowed set causes an error, even if that field is ignored. For example, an event could repeat 'every 3 days,' 'every Thursday,' or 'on July 22 every year.' A pattern is represented in the API by the recurrencePattern resource.ĭepending on the type of pattern, certain fields of the recurrencePattern are required, optional, or ignored.Įven if a field is ignored, it is still validated. This specifies how often the event repeats. The first part of a recurrence is the pattern. The Outlook REST APIs model recurrence rules in the recurrence property of the event resource.Įach recurrence is made up of two parts: the recurrence pattern (how often) and the recurrence range (for how long). The rule specifies both how often an event repeats and for how long. The key bit of information that allows recurring events to 'expand' into individual occurrences is the recurrence rule.

Whether it's a weekly one-on-one meeting with your manager or a division-wide review meeting that happens on the second Tuesday of each month, recurring events make it easy to create the event once and let the server fill in the rest of the series. Recurring events are an important part of Outlook calendaring. TaskItem task = null string taskString = string. Take note this will only return the task items in the default Tasks folder and won’t return any To-do items.Ĭ# code example Outlook. To get a list of tasks you can use the Outlook Namespace object to get a reference to the default Tasks folder. Another confusing fact is that Tasks are always To-do items, but To-do items are not always tasks.Ĭonfused yet? Don’t lose hope, let’s take a closer look at using these items in your Office add-ins. Whereas Outlook To-Do items can be either an e-mail or a contact item and they cannot have a start date, end date or a recurrence pattern.

Outlook tasks are a specific built-in Outlook item type that can have a start and end date, a status as well as a specific recurrence pattern. Outlook’s To-do items were first introduced in Outlook 2007 and although they might look similar to Tasks, they are inherently different.

Outlook recurring task