| ManipulateStartOf Method | 
| Name | Description | |
|---|---|---|
| StartOf(DateTimeParts) | 
                Get the start of part from DateTime.UtcNow. E.g. StartOf(DateTimeParts.Year)
                return a new DateTime at the start of the current year.
              | |
| StartOf(DateTime, DateTimeParts) | 
                Get the start of this dateTime at part. E.g.
                DateTime.Now.StartOf(DateTimeParts.Year)
                return a new DateTime at the start of the current year.
              |