using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"www\w+:\/\/[\w.-]+(?::?\d{1,5})?[-\w.\/?=&%]*";
string input = @"http://youtube.com/watch?a=r_FgjB-RKNo&u=/watch%3Fv%3DB0_3423
https://localhost:443
mailto://www.domain.com:8080/something
http://www.domain.com/something:badurl";
foreach (Match m in Regex.Matches(input, pattern))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx