本文實例講述了C#使用正則表達式實現首字母轉大寫的方法。分享給大家供大家參考,具體如下:
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); }); }}
PS:這里再為大家提供2款非常方便的正則表達式工具供大家參考使用:
JavaScript正則表達式在線測試工具:
http://tools.VeVB.COm/regex/javascript
正則表達式在線生成工具:
http://tools.VeVB.COm/regex/create_reg
希望本文所述對大家C#程序設計有所幫助。
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