我使用的擴展方法。
public static string CorrectTextCasing(this string text)
{
// /[.:?!]\\s[a-z]/ matches letters following a space and punctuation,
// /^(?:\\s+)?[a-z]/ matches the first letter in a string (with optional leading spaces)
Regex regexCasing = new Regex("(?:[.:?!]\\s[a-z]|^(?:\\s+)?[a-z])", RegexOptions.Multiline);
// First ensure all characters are lower case.
// (In my case it comes all in caps; this line may be omitted depending upon your needs)
text = text.ToLower();
// Capitalize each match in the regular expression, using a lambda expression
text = regexCasing.Replace(text, s => (s.Value.ToUpper));
// Return the new string.
return text;
}
然後,我可以做到以下幾點:
string mangled = "i'm A little teapot, short AND stout. here IS my Handle.";
string corrected = s.CorrectTextCasing();
// returns "I'm a little teapot, short and stout. Here is my handle."
我會與分裂的想法走。這是一個好主意,正則表達式將會變得更加醜陋。另外,作爲一般規則,它通常更好地使用字符串操作,而不是正則表達式。 – 2011-04-14 13:56:40