c# - Most efficient way using regex to parse proxies using C# Visual Studio?

Question

Using Visual Studio and C#, How can I do the best way to parse a given string of downloaded html using regex to retrieve the proxies?

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        public string stringVar { get; set; }

        private void button1_Click(object sender, EventArgs e)
        {
            WebClient wc = new WebClient();

            stringVar = wc.DownloadString("http://somewebsitewithproxies.com/");

            // some regex operation on stringVar here perhaps?

            textBox1.Text = // ???

        }


    }
}

I will be using the regex expression:

\d{1,3}[.]\d{1,3}[.]\d{1,3}[.]\d{1,3}[:]\d{1,5}

I would like to have the variable 'stringVar' be parsed and the proxies set to textBox1. Would this be easy enough to do within the entire button click?

Thanks in advance.

Answer 1

您的正则表达式可以通过重复来简化。以下代码用于匹配代理模式。

string proxyPattern = @"\d{1,3}(\.\d{1,3}){3}:\d{1,5}";
Match match = Regex.Match(str, proxyPattern);
if (match.Success)
{
    Console.WriteLine(match.Groups[0].Value);
}