class1.cs

C#开发教程 由浅入深 配有实例 是初学者的好帮手

using System;
using System.Text.RegularExpressions;

namespace Matching
{
	class MatchingApp
	{
		[STAThread]
		static void Main(string[] args)
		{
//			Regex r = new Regex("in");	// same thing
			Regex r = new Regex("(in)");
			Match m = r.Match("Matching");
			if (m.Success)
			{
				Console.WriteLine(
					"Found '{0}' at position {1}",
					m.Value, m.Index);
			}

			Console.WriteLine();
			MatchCollection mc = r.Matches(
				"The King Was in His Counting House");
			for (int i = 0; i < mc.Count; i++)
			{
				Console.WriteLine(
					"Found '{0}' at position {1}",
					mc[i].Value, mc[i].Index);
			}

			Console.WriteLine();
			string s2 = "The King Was in His Counting House";
			Match m2; 
			for (m2 = r.Match(s2); m2.Success; m2 = m2.NextMatch())
			{
				Console.WriteLine(
					"Found '{0}' at position {1}",
					m2.Value, m2.Index);
			}

			Console.WriteLine();
			Regex q = new Regex(" in ");
			MatchCollection mm = q.Matches(
				"The King Was in His Counting House");
			for (int i = 0; i < mm.Count; i++)
			{
				Console.WriteLine(
					"Found '{0}' at position {1}",
					mm[i].Value, mm[i].Index);
			}

			Console.WriteLine();
			Regex p = new Regex("((an)|(in)|(on))");
			MatchCollection mn = p.Matches(
				"The King Kong Band Wins Again");
			for (int i = 0; i < mn.Count; i++)
			{
				Console.WriteLine(
					"Found '{0}' at position {1}",
					mn[i].Value, mn[i].Index);
			}

			Console.WriteLine();
			Regex o = new Regex("(a|i|o)n");
			MatchCollection mo = o.Matches(
				"The King Kong Band Wins Again");
			for (int i = 0; i < mo.Count; i++)
			{
				Console.WriteLine(
					"Found '{0}' at position {1}",
					mo[i].Value, mo[i].Index);
			}

			Console.WriteLine();
			Regex n = new Regex("Gr(a|e)y");
			MatchCollection mp = n.Matches(
				"Green, Grey, Granite, Gray");
			for (int i = 0; i < mp.Count; i++)
			{
				Console.WriteLine(
					"Found '{0}' at position {1}",
					mp[i].Value, mp[i].Index);
			}
		}
	}
}