字符串未被识别为有效的DateTime.即使使用parse Exact

Question

im使用parse exactl转换以下字符串，但仍然给我一个错误：

Tue Oct 06 2020 15:22:59 GMT 0200 (Central European Summer Time)

这是我的转换：

DateTime frm = DateTime.ParseExact(dtFrom, "yyyy/MM/dd", CultureInfo.InvariantCulture);

Answer 1

使用Regex:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
string input = "Tue Oct 06 2020 15:22:59 GMT 0200 (Central European Summer Time)";
string pattern = @"^(?'date'.*)(?'sign'.)(?'offset'd{4})s(?'ending'([^)]+))$";
Match match = Regex.Match(input, pattern);
string dateStr = match.Groups["date"].Value;
string sign = match.Groups["sign"].Value;
string offset = match.Groups["offset"].Value;
switch (sign)
{
case " ":
dateStr = dateStr + " +" + offset;
break;
case "+":
dateStr = dateStr + sign + offset;
break;
case "-":
dateStr = dateStr + sign + offset;
break;
}
DateTime date = DateTime.ParseExact(dateStr,"ddd MMM dd yyyy HH:mm:ss \G\M\T zzz", System.Globalization.CultureInfo.InvariantCulture);
}
}
}