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

namespace PDF_Master.DataConvert
{
    public class CreateTimeToDate : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (string.IsNullOrEmpty(value.ToString()))
            {
                //没有时间得返回系统当前时间
                return System.DateTime.Now.ToString("yyyyMMdd");
            }
            else
            {
                //部分日期不正常 需要进一步处理
                string dateStr = Regex.Match(value.ToString(), "(?<=D\\:)[0-9]+(?=[\\+\\-])").Value;
                if (string.IsNullOrEmpty(dateStr))//日期不合格时 显示当前系统日期
                {
                    dateStr = System.DateTime.Now.ToString("yyyyMMdd");
                }
                return dateStr.Substring(0, 8);
            }
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }
}