inabox/inabox.wpf/DigitalForms/Designer/Controls/Fields/DFDateControl.cs

using InABox.Core;
using Syncfusion.Windows.Shared;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace InABox.DynamicGrid
{
    public class DFDateControl : DynamicFormFieldControl<DFLayoutDateField, DFLayoutDateFieldProperties, DateTime>
    {
        private DateTimeEdit Date = null!; // late-initialising

        protected override FrameworkElement Create()
        {
            Date = new DateTimeEdit();
            Date.DateTimeFormat = CultureInfo.CurrentCulture.DateTimeFormat;
            Date.Pattern = DateTimePattern.ShortDate;
            var def = Field.Properties.Default;
            Date.DateTime = def.IsEmpty()
                ? DateTime.Now
                : def;
            Date.DateTimeChanged += (sender, e) => ChangeField();
            Date.EnableMouseWheelEdit = false;
            return Date;
        }
        
        public override void Deserialize(string serialized)
        {
            if (DateTime.TryParseExact(serialized, "dd-MM-yyyy", CultureInfo.InvariantCulture, DateTimeStyles.None,
                    out DateTime d))
                SetValue(d);
        }

        public override string Serialize() => 
            GetValue().ToString("dd-MM-yyyy");

        public override DateTime GetValue() => Date.DateTime ?? DateTime.MinValue;

        public override void SetValue(DateTime value) => Date.DateTime = value;

        protected override bool IsEmpty() => Date.DateTime == null || Date.DateTime == DateTime.MinValue;
    }
}