本文实例讲述了C#使用正则表达式实现首字母转大写的方法。分享给大家供大家参考，具体如下：
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class Program{ static void Main(string[] args) { // Input strings. const string s1 = "samuel allen"; const string s2 = "dot net perls"; const string s3 = "Uppercase first letters of all words in the string."; // Write output strings. Console.WriteLine(TextTools.UpperFirst(s1)); Console.WriteLine(TextTools.UpperFirst(s2)); Console.WriteLine(TextTools.UpperFirst(s3)); Console.ReadKey(); } } public static class TextTools { /// <summary> /// Uppercase first letters of all words in the string. /// </summary> public static string UpperFirst(string s) { return Regex.Replace(s, @"\b[a-z]\w+", delegate(Match match) { string v = match.ToString(); return char.ToUpper(v[0]) + v.Substring(1); }); }} |
希望本文所述对大家C#程序设计有所帮助。
