想把日期格式"dd\MM\yyyy"用正则表达式替换成"yyyy\MM\dd"

[tangxufeng]

想把日期格式"dd\MM\yyyy"用正则表达式替换成"yyyy\MM\dd"，如"19\03\2012"

[EnForGrass]

不用替换
DateTimestr.ToString("yyyy\MM\dd")

[EnForGrass]

[Quote=引用 1 楼 chinajiyong 的回复:]

不用替换
DateTimestr.ToString("yyyy\MM\dd")
[/Quote]
string dr = DateTime.Now.ToString(@"yyyy\\MM\\dd");

[bdmh]

参考
http://www.csharpwin.com/csharpspace/9442r8768.shtml

[q107770540]

[Quote=引用楼主 tangxufeng 的回复:]
想把日期格式"dd\MM\yyyy"用正则表达式替换成"yyyy\MM\dd"，如"19\03\2012"
[/Quote]
str=Regex.Replace(str,@"(\d{2})\\(\d{2})\\(\d{4})","$3\\$2\\$1");

[bdmh]

            string source = @"(aa19\03\2012bb";
            Regex reg = new Regex(@"(?<day>[\d]{2})\\(?<month>[\d]{2})\\(?<year>[\d]{4})");
            source = reg.Replace(source, "${year}\\${month}\\${day}");