| Property | Description | |||
| Method Name | AddDateTimeSpan | |||
| Argument - timespan | DateTimeSpan value to add | |||
| Returns | The new date time with the time added on | |||
| Description | Creates a new DateTime containing this DateTime + DateTimeSpan value | |||
| Remarks | The addition is done in compliance with the W3C XML rules for date times and durations (these rules are somewhat convoluted!) |