using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"http://(www\.)?(schema\.org|stackoverflow\.com|opensource\.org|php\.net|(?:[a-zA-Z]{2}\.)?wikipedia\.org|fsf\.org|creativecommons\.org|github\.com|getbootstrap\.com|mozilla\.org|firefox\.com|opera\.com|google\.com|bing\.com|yahoo\.com|apple\.com|microsoft\.com)";
string substitution = @"https://\1\2";
string input = @"http://schema.org/
http://getbootstrap.com/
http://github.com/
http://wikipedia.org
http://www.wikipedia.org
http://en.wikipedia.org";
RegexOptions options = RegexOptions.Multiline | RegexOptions.IgnoreCase;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
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