DateTimePicker

When to Use

• Scheduling events that require both a date and a specific time
• Appointment booking flows where date and time are selected together
• Event creation forms in calendaring applications
• Deadline or due date inputs that need time precision

Time zone

By default, DateTimePicker treats values as unspecified local-clock time. To pin the picker to a specific time zone — useful when a user is in one zone but scheduling for another (e.g. booking a meeting in Berlin from New York) — pass a TimeZoneInfo to TimeZone. Bind OffsetValue (DateTimeOffset) instead of Value to round-trip the offset cleanly. Set ShowTimeZoneLabel="true" to display the zone abbreviation next to the input so users see which zone they're working in.

The displayed wall-clock time is always in the picker's TimeZone, regardless of the consumer's system zone. DST transitions are handled by TimeZoneInfo — the underlying DateTimeOffset carries the correct UTC offset for any picked instant.