Used in the absoluteExpiration parameter in an Cache.Insert(string, object) method call to indicate the item should never expire. This field is read-only.
Value: 12/31/9999 11:59:59 PM
When used, this field sets the absoluteExpiration parameter equal to DateTime.MaxValue, which is a constant representing the largest possible DateTime value, 12/31/9999 11:59:59 PM.