using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"\[link=(?:https?:)?\/\/(www\.)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-](\S*[&|#]\S+)*)*\/?\]\S(.*?)\[\/link\]";
string input = @"// Lolos
[link=https://namablog.com/]teks[/link]
[link=http://namablog.co.id/]teks[/link]
[link=http://namablog.com/2016/04/vita-denique-conferta-voluptatum-omnium.html]teks[/link]
[link=https://namablog.blogspot.com/2016/04/vita-denique-conferta-voluptatum-omnium.html?showComment=1468398368234#c4159204139756303657]teks[/link]
[link=https://namablog.blogspot.co.id/search?updated-max=2016-04-17T04:28:00-07:00&max-results=7/]teks[/link]
// Lolos tanpa protokol
[link=//namablog.com/]teks[/link]
// Tidak lolos tanpa teks
[link=https://namablog.com][/link]
// Tidak lolos jika hanya spasi
[link=https://namablog.com] [/link]
// Format rusak, tidak lolos!
[link=https://namablog.com/]teks[/link
[link=https://namablog]teks[link]
[link=https://namablog.com/]teks/link]
[link=https://namablog.com/]teks[link]";
RegexOptions options = RegexOptions.IgnoreCase;
foreach (Match m in Regex.Matches(input, pattern, options))
{
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