截取字符串的特定位置

[baijingsw]

比如说有个字符串是
string content = "we sholud come form -li- or some -wo so we have - 6 -";

乱写的哈

我就是想截取 - - 中间的 上面的 li 和 6 都是 - - 中间的，我只想截取他们中间的，怎么做呢？

[ws_hgo]

用SQL

string content = "we sholud come form -li- or some -wo so we have - 6 -"; 
declare @sql varchar(2000)
set @sql=''
select @sql=right(content,len(content)-charindex('|',content))
select @sql=left(content,charindex('|',content)-1)

[baijingsw]

那个。。能用C#代码么。

[-过客-]

为什么是
-li-
- 6 -
而不是
-li-
-wo so we have -

什么规则？

[摩尔信使MThings]

准确的说，我不是很清楚

[baijingsw]

楼上啥意思？ 规则就是 - -中间的内容，只要截取下来就是了啊

[-过客-]

打错了，你的例子中有五个“-”，为什么取的是
-li-
- 6 -
而不是
-li-
-wo so we have -

什么规则？

[baijingsw]

哦， 哦，写错了 string content = "we sholud come form -li- or some wo so we have - 6 -";

[-过客-]

try...

string content = "we sholud come form -li- or some wo so we have - 6 -"; 
MatchCollection mc = Regex.Matches(content, @"-([^-]+)-");
foreach (Match m in mc)
{
    richTextBox2.Text += m.Groups[1].Value + "\n";
}

[baijingsw]

那或者这样呢？ 截取 -li-
-wo so we have -
- 6 -

这3个呢？反正如果是 - - 里面的都截取

[spmzfz]

          //                                    56789
            string content = "we sholud come form -li- or some -wo so we have - 6 -";
            int i1 = content.IndexOf('-', 0);
            int i2 = content.IndexOf('-', i1 + 1);
            Console.WriteLine(content.Substring(i1+1,i2-i1-1 ));

我只会这样做。

[-过客-]

10楼的需求

string content = "we sholud come form -li- or some wo so we have - 6 -"; 
MatchCollection mc = Regex.Matches(content, @"(?<=-)[^-]+(?=-)");
foreach (Match m in mc)
{
    richTextBox2.Text += m.Value + "\n";
}

[cgpu456]

mark

[LemIST]

string content = "we sholud come form -li- or some -wo so we have - 6 -";

            Regex reg = new Regex(@"\-(.*?)\-", RegexOptions.Compiled);
            MatchCollection mc = reg.Matches(content);
            foreach (Match mat in mc)
                Console.WriteLine(mat.Groups[1].Value);