regex - Windows XP 32 与 Windows 2008 64 位上的正则表达式

Question

我有适用于 Windows XP (.NET 1.1) 的正则表达式，但不适用于 Windows 2008 64(.NET 2.0) 位平台。

thisLine=""fname","lname","empid","password","User","Teller","login","Active","title","Jan 11 2012 12:00AM","MA","Retail","East","Market St","email@email.com","denied","approved","denied","denied","manager@email.com""

您能告诉我为什么下面的代码在 Windows XP 32 位系统上返回 True，而在 Windows 2008 64 位系统上返回错误：

MsgBox(RegexObj.IsMatch(thisLine, ",(?!(?<=(?:^|,)\s*""(?:[^""]|""|\\"")*,)(?:[^""]|""|\\"")*""\s*(?:,|$))"))

Dim m As Match = RegexObj.Match(thisLine)
Return RegexObj.Split(thisLine)

20这应该返回带有元素的数组。同样，在 XP 上运行良好，为什么不能在 Windows 2008 上运行？