Deserialize an ics file

It's somewhat unusual for an ics file to have more than one VCALENDAR within it, but it is allowed. Due to the container-like capabilities of an ics file, loading one produces a CalendarCollection instead of a single Calendar. In most use cases, there will only be one Calendar within that collection.

This example shows the most common use case, with one Calendar inside a CalendarCollection. We'll use LINQ to "reach inside" the each collection, and take the first event.

var calendarCollection = Calendar.LoadFromFile(@"path\to\file.ics");

//A VCALENDAR may contain many VEVENTs, so get the first calendar's first event
var firstEvent = calendarCollection
    .First()
    .Events
    .First();