public enum Frequency
Frequency at which an event occurs - the enumerator also casts to an integer specifying the number of times per year that would divide into (eg annually = 1, semiannual = 2, monthly = 12 etc).
public static Frequency Annual
public static Frequency SemiAnnual
public static Frequency Quarterly
public static Frequency Monthly
public static Frequency Weekly
public static Frequency BiWeekly
public static Frequency Daily