Question

我有这段代码：

[ “DATA”，[]，{ “列表”：[ “100002788277842-2”， “100001011669968-2”， “100003141742254-2”， “100000874473252-2”， “100000100157923-2”，“100006537786749- 2" ， “100004300660153-2”， “100002922930370-2”， “100000627202286-2”， “100001649542414-2”， “100001687548104-2”， “100000616160095-2”， “100004018411224802-0”， “100001526625563-2” “100002802931617-0”， “100002802931617-3”， “100000959445370”， “100004335731372-0”， “100004335731372-3”， “1172027782-3”， “1172027782-0”， “100001356181635-3”，“100001356181635- 0" ， “100001526625563-3”， “100001526625563-0”， “100005292965027-3”， “100005292965027-0”]}

我怎样才能单独获得所有数字但没有“ - ”以及之后的数字？例如：100002788277842（这是第一个）

Answer 1

var numbers = str.Split(new [] { '"','-' },StringSplitOptions.RemoveEmptyEntries)
                 .Where(word => word.All(char.IsDigit) && word.Length > 1)
                 .ToList();

Answer 2

我宁愿使用正则表达式。

var regex = new Regex(@"\d\d+", RegexOptions.Compiled);
foreach (Match m in regex.Matches(yourstring))
{
    var number = int.Parse(m.Value);
    ...
}

Answer 3

您可以按如下方式尝试正则表达式：

string s = @"[""DATA"",[],{""list"":[""100002788277842-2"",""100001011669968-2"",""100003141742254-2"",""100000874473252-2"",""100000100157923-2"",""100006537786749-2"",""100004300660153-2"",""100002922930370-2"",""100000627202286-2"",""100001649542414-2"",""100001687548104-2"",""100000616160095-2"",""100004018411224802-0"",""100001526625563-2"",""100002802931617-0"",""100002802931617-3"",""100000959445370"",""100004335731372-0"",""100004335731372-3"",""1172027782-3"",""1172027782-0"",""100001356181635-3"",""100001356181635-0"",""100001526625563-3"",""100001526625563-0"",""100005292965027-3"",""100005292965027-0""]}";

string[] array = Regex.Matches(s, @"\d+(?=-)")
                      .Cast<Match>()
                      .Select(_ => _.Value)
                      .ToArray();

/* 'array' contains:

100002788277842
100001011669968
100003141742254
100000874473252
100000100157923
100006537786749
100004300660153
100002922930370
100000627202286
100001649542414
100001687548104
100000616160095
100004018411224802
100001526625563
100002802931617
100002802931617
100004335731372
100004335731372
1172027782
1172027782
100001356181635
100001356181635
100001526625563
100001526625563
100005292965027
100005292965027

*/

编辑：

添加了转义字符串

C＃从字符串中获取字符串

3 个答案:

编辑：