Question

c#使用正则表达式，需要添加哪些引用？？还有个基本的问题

为什么没反应？我的代码写错了？用正则表达式怎么写？？？

Answer 1

using System.Text.RegularExpressions;

Answer 2

using System;
using System.Text.RegularExpressions;

public void Test()
{
string input = @"ab1c";

string pattern = @"\d";
RegexOptions options = RegexOptions.None;
Regex regex = new Regex(pattern, options);
MatchCollection matches = regex.Matches(input);

foreach (Match match in matches)
{
Console.WriteLine(match.Value);
}
}