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Gets or sets the DateTime value indicating the end date of the recurrence pattern.
public DateTime PatternEndDate { get; set; }
This property is optional but must be coordinated with other properties when setting up a recurrence pattern. If this property or the Occurrences property is set, the pattern is considered to be finite, and the NoEndDate property is false. If neither PatternEndDate nor Occurrences is set, the pattern is considered infinite and NoEndDate is true. The Interval property must be set before setting PatternEndDate.