字符串转换

[karxiu]

字符串 2012-5-1 2012-10-10

转换成

201205 201210

[孟子E章]

string s = "2012-5-1";
s = DateTime.ParseExact(s, "yyyy-M-d", null).ToString("yyyyMM");

[karxiu]

刚刚 显示无法将 STRING 转换成 DATETIME

[孟子E章]

不是一次转2个，而是一次只能转一个

如果不是日期格式的，你可以
String x = "2012-5-1";
x = x.Substring(0, x.LastIndexOf('-'));
x = x.Length == 7 ? x.Replace("-", "") : x.Replace("-", "0");

[threenewbee]

string s = "2012-5-1";
string result = s.Split('-')[0].PadLeft(4, '0') + s.Split('-')[1].PadLeft(2, '0');

[亡魂葬爱]

[Quote=引用 1 楼 的回复:]

string s = "2012-5-1";
s = DateTime.ParseExact(s, "yyyy-M-d", null).ToString("yyyyMM");
[/Quote]
正解~

[threenewbee]

using System.Text.RegularExpressions;

string s = "2012-5-1 2012-10-10";
string result = Regex.Replace(s, @"(\d{4})-(\d{1,2})-(\d{1,2})",
    (x) => x.Groups[1].Value.PadLeft(4, '0') + x.Groups[2].Value.PadLeft(2, '0'));
Console.WriteLine(result);