C# 正则表达式：匹配以“Id”结尾的单词
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regex: match word that ends with "Id"
提问by epitka
I need help putting together a regex that will match word that ends with "Id" with case sensitive match.
我需要帮助整理一个正则表达式，它将匹配以“Id”结尾的单词并区分大小写。
采纳答案by Gumbo
Try this regular expression:
试试这个正则表达式：
\w*Id\b
\w*allows word characters in front of Idand the \bensures that Idis at the end of the word (\bis word boundary assertion).
\w*允许在单词前面的字符，Id并\b确保Id在单词的末尾（\b是单词边界断言）。
回答by TK-421
How about \A[a-z]*Id\z? [This makes characters before Idoptional. Use \A[a-z]+Id\zif there needs to be one or more characters preceding Id.]
怎么样\A[a-z]*Id\z？[这使得Id可选的字符之前。使用\A[a-z]+Id\z，如果需要有之前的一个或多个字符Id。]
回答by James Curran
Regex ids = new Regex(@"\w*Id\b", RegexOptions.None);
"\b" means "word break" & \w mean any word character, so \w*Id\b means "{stuff}Id". By not including RegexOptions.IgnoreCase, it will be case sensitive.
“\b”表示“断字”，\w 表示任何单词字符，所以\w*Id\b 表示“{stuff}Id”。通过不包括 RegexOptions.IgnoreCase，它将区分大小写。
回答by Squidly
I would use\b[A-Za-z]*Id\b
The \b matches the beginning and end of a word i.e. space, tab or newline, or the beginning or end of a string.
我会使用\b[A-Za-z]*Id\b
\b 匹配单词的开头和结尾，即空格、制表符或换行符，或者字符串的开头或结尾。
The [A-Za-z] will match any letter, and the * means that 0+ get matched. Finally there is the Id.
[A-Za-z] 将匹配任何字母，* 表示匹配 0+。最后是Id。
Note that this will match words that have capital letters in the middle such as 'teStId'.
请注意，这将匹配中间有大写字母的单词，例如“teStId”。
I use http://www.regular-expressions.info/for regex reference
我使用http://www.regular-expressions.info/作为正则表达式参考
回答by Bart Kiers
This may do the trick:
这可能会奏效：
\b\p{L}*Id\b
Where \p{L}matches any (Unicode) letter and \bmatches a word boundary.
其中\p{L}匹配任何（Unicode）字母并\b匹配单词边界。
回答by BenAlabaster
Gumbo gets my vote, however, the OP doesn't specify whether just "Id" is an allowable word, which means I'd make a minor modification:
Gumbo 得到了我的投票，但是，OP 没有指定是否只是“Id”是一个允许的词，这意味着我会做一个小的修改：
\w+Id\b
1 or more word characters followed by "Id" and a breaking space. The [a-zA-Z] variants don't take into account non-English alphabetic characters. I might also use \s instead of \b as a space rather than a breaking space. It would depend if you need to wrap over multiple lines.
1 个或多个单词字符后跟“Id”和一个分隔空格。[a-zA-Z] 变体不考虑非英文字母字符。我也可能使用 \s 而不是 \b 作为空格而不是中断空格。这取决于您是否需要换行多行。
