program.cs

这是.net2005学习不可缺少的教程

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;

namespace REGrammar
{
    class Program
    {
        static void Main(string[] args)
        {
            // 使用\d 来匹配从0－9中的任意一个数字
            String str1 = "1-800-808-8989";
            Console.WriteLine(Regex.IsMatch(str1,@"\d-\d\d\d-\d\d\d-\d\d\d\d"));

            // 与任何单词字符匹配。等效于 Unicode 字符类别 [\p{Ll}\p{Lu}\p{Lt}\p{Lo}\p{Nd}\p{Pc}\p{Lm}]。如果用 ECMAScript 选项指定了符合 ECMAScript 的行为，则 \w 等效于 [a-zA-Z_0-9]。
            Console.WriteLine(Regex.IsMatch("x-800-898-9999",@"\w-\d\d\d-\d\d\d-\d\d\d\d"));

            Console.WriteLine(Regex.IsMatch("March 31, 2006", @"[a-z A-Z][a-z A-Z][a-z A-Z] \d\d.\W\d\d\d\d"));

            Console.WriteLine(Regex.IsMatch("1982 220 988 0009", @"^\d\d\d\d \d\d\d \d\d\d \d\d\d\d$"));
            // $
            Console.WriteLine(Regex.IsMatch("XXX1982 220 988 0009", @"\d\d\d\d \d\d\d \d\d\d \d\d\d\d$"));
            // ^
            Console.WriteLine(Regex.IsMatch("1982 220 988 0009XXX", @"^\d\d\d\d \d\d\d \d\d\d \d\d\d\d"));

            // Split()
            String mStringMix = "123.ABC.456.DEF.789";
            String[] splitResults;
            // 使用 \. 因为句号是正则表达式语法的一部分，所以需要使用\转义符
            splitResults = System.Text.RegularExpressions.Regex.Split(mStringMix, @"\.");
            StringBuilder stringResults = new StringBuilder(32);

            foreach (String strEle in splitResults)
            {
                stringResults.Append(strEle + "\n");
            }
            Console.WriteLine(stringResults.ToString());
        }
    }
}