Home > Article > Backend Development > c# Use regular expressions to match strings to verify URL examples
在System.Text.RegularExpression命名空间里,有正则表达式方法。
using System.Collections.Generic;using System.Text;
namespace RegexDemo
{
class Program
{
static void Main(string[] args)
{
Regex regex = new Regex("China", RegexOptions.IgnoreCase);
//使用Match方法。
string source = "China is my mother,My mother is china!";
Match m = regex.Match(source);
if (m.Success)
{
Console.WriteLine("找到第一个匹配");
}
Console.WriteLine(new string('-',9));
//下面的样例将演示使用Matches方法进行匹配
MatchCollection matches=regex.Matches(source);
foreach(Match s in matches)
{
if(s.Success)
Console.WriteLine("找到了一个匹配");
}
Console.ReadLine();
}
}
}
[/code]
using System.Collections.Generic; using System.Text; using System.Text.RegularExpressions; namespace URLRegex { class Program { static void Main(string[] args) { string Pattern = @"^(http|https|ftp)\://[a-zA-Z0-9\-\.]+\.[a-zA-Z]{2,3}(:[a-zA-Z0-9]*)?/?([a-zA-Z0-9\-\._\?\,\'/\\\+&$%\$#\=~])*$"; Regex r = new Regex(Pattern); string source = "http://www.jb51.net"; Match m = r.Match(source); if (m.Success) { Console.WriteLine("URL验证成功!"); } else { Console.WriteLine("URL验证失败!"); } Console.ReadLine(); } } }
更多c#使用正则表达式匹配字符串验证URL示例相关文章请关注PHP中文网!