C# 找到匹配的单词C

我有3个字符串，我想找到匹配项

你想要这个方法

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如果您只是想看看长字符串是否包含特定的短字符串，请使用string.contains

例如：

string[] urlStrings = new string[] 
{
    @"http://www.vkeong.com/2011/food-drink/heng-bak-kut-teh-delights-taman-kepong/#comments"
    @"http://www.vkeong.com/2009/food-drink/sen-kee-duck-satay-taman-desa-jaya-kepong"
    @"http://www.vkeong.com/2008/food-drink/nasi-lemak-wai-sik-kai-kepong-baru/"
}

foreach(String url in urlStrings)
{
    if(url.Contains("nasi-lemak"))
    {
        //Your code to handle a match here.
    }
}

---

当然，我们也需要一个LINQ答案：

var matches = urlStrings.Where(s => s.Contains("nasi-lemak"));

// or if you prefer query form. This is really the same as above
var matches2 = from url in urlStrings
               where url.Contains("nasi-lemak")
               select url;

// Now you can use matches or matches2 in a foreach loop
foreach (var matchingUrl in matches)
     DoStuff(matchingUrl);

---

我不得不问：为什么这比.Contains更可取？@AllenG-也许出于这个原因，是的，找到索引比找到索引然后验证结果不是-1要快得多，但既然这正是这个解决方案所做的，我看不出有什么不同。不是说这是一个糟糕的解决方案，只是寻找一个原因，我会这样做，而不是本机的。包含，看看字符串是否包含某个子字符串。这只是一个可能的解决方案。就可读性而言，是的，我可能会选择.Contains。在本例中，我的首选项是第一个

string[] urlStrings = new string[] 
{
    @"http://www.vkeong.com/2011/food-drink/heng-bak-kut-teh-delights-taman-kepong/#comments"
    @"http://www.vkeong.com/2009/food-drink/sen-kee-duck-satay-taman-desa-jaya-kepong"
    @"http://www.vkeong.com/2008/food-drink/nasi-lemak-wai-sik-kai-kepong-baru/"
}

foreach(String url in urlStrings)
{
    if(url.Contains("nasi-lemak"))
    {
        //Your code to handle a match here.
    }
}

var matches = urlStrings.Where(s => s.Contains("nasi-lemak"));

// or if you prefer query form. This is really the same as above
var matches2 = from url in urlStrings
               where url.Contains("nasi-lemak")
               select url;

// Now you can use matches or matches2 in a foreach loop
foreach (var matchingUrl in matches)
     DoStuff(matchingUrl);