C# RegEx：忽略大小写...在模式中？
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C# RegEx: Ignore case... in pattern?
提问by core
I'm using System.Text.RegularExpressions.Regex.IsMatch(testString, regexPattern) to do some searches in strings.
我正在使用 System.Text.RegularExpressions.Regex.IsMatch(testString, regexPattern) 在字符串中进行一些搜索。
Is there a way to specify in the regexPattern string that the pattern should ignore case? (I.e. without using Regex.IsMatch(testString, regexPattern, RegexOptions.IgnoreCase))
有没有办法在 regexPattern 字符串中指定模式应该忽略大小写？（即不使用 Regex.IsMatch(testString, regexPattern, RegexOptions.IgnoreCase)）
采纳答案by stevemegson
(?i)within the pattern begins case-insensitive matching, (?-i)ends it. That is,
(?i)在模式中开始不区分大小写的匹配，(?-i)结束它。那是，
(?i)foo(?-i)bar
matches FOObarbut not fooBAR.
匹配FOObar但不匹配fooBAR。
EDIT:I should have said (?-i)starts case-sensitive matching - if you want the whole pattern to be case-insensitive then you don't need to "end" the (?i).
编辑：我应该说(?-i)开始区分大小写匹配 - 如果您希望整个模式不区分大小写，那么您不需要“结束” (?i).
