using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Data;

namespace FWindSoft.Wpf
{
    public class DateTimeConverter : IValueConverter
    {
        public static readonly DateTimeConverter Date = new DateTimeConverter();
        public static readonly DateTimeConverter DateTime = new DateTimeConverter() { DataTimeFormat= "yyyyMMddhhmmss" };
        public DateTimeConverter()
        {
            DataTimeFormat = "yyyyMMdd";
        }

        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {

            DateTime dateTime = System.DateTime.Now;
            if (value == null)
                return null;
            if (System.DateTime.TryParseExact(value.ToString(), "yyyyMMdd", CultureInfo.CurrentCulture,
                DateTimeStyles.AssumeLocal, out dateTime))
            {
                return dateTime;
            }
            return null;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            try
            {
                DateTime dateTime = (DateTime)value;
                return dateTime.ToString("yyyyMMdd");
            }
            catch (Exception)
            {


            }
            return string.Empty;
        }

        public string DataTimeFormat { get; set; }
    }
}