正则表达式基础之 ?

weixin_33858249

于 2012-07-12 16:56:00 发布

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原文链接：http://www.cnblogs.com/gisbeginner/archive/2012/07/12/2588433.html

本文通过几个具体的代码示例展示了如何使用C#中的正则表达式进行字符串匹配。包括基本的匹配、索引获取、长度计算以及匹配多个目标等操作。

Console.WriteLine (Regex.Match ("color", @"colou?r").Success); // True
Console.WriteLine (Regex.Match ("colour", @"colou?r").Success); // True
Console.WriteLine (Regex.Match ("colouur", @"colou?r").Success); // False

Match m = Regex.Match ("any colour you like", @"colou?r");
Console.WriteLine (m.Success); // True
Console.WriteLine (m.Index); // 4
Console.WriteLine (m.Length); // 6
Console.WriteLine (m.Value); // colour
Console.WriteLine (m.ToString()); // colour

Match m1 = Regex.Match ("One color? There are two colours in my head!",@"colou?rs?");
Match m2 = m1.NextMatch();
Console.WriteLine (m1); // color
Console.WriteLine (m2); // colours

foreach (Match m in Regex.Matches("One color? There are two colours in my head!", @"colou?rs?"))
Console.WriteLine (m);

转载于:https://www.cnblogs.com/gisbeginner/archive/2012/07/12/2588433.html