Implementing DateTimeEdit (WPF)

An enhanced date-time input control with mask editing, calendar/clock dropdown, date range restriction, formatting, and MVVM binding support.

When to Use This Skill

Use this skill when the user needs to:

• Add a date/time picker input field to a WPF application
• Bind a selected date to a ViewModel property (DateTime two-way binding)
• Format the displayed date/time (predefined patterns or custom patterns)
• Restrict selectable dates with min/max range or blackout dates
• Enable inline editing (mask mode or free-form text editing)
• Show a calendar, clock, or combined dropdown picker
• Display watermark text when no date is selected
• Handle null date values
• Apply locale-specific date formats via CultureInfo
• Localize dropdown button labels (Today/None)