C#   Уроки программирования с нуля. Си-шарп для чайников   C#

Console.OutputEncoding = Encoding.UTF8;

Console.OutputEncoding = Encoding.Unicode;

Console.OutputEncoding = Encoding.GetEncoding(1251);

Console.OutputEncoding = Encoding.Default;

Console.OutputEncoding = Encoding.ASCII;

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://mycsharp.ru");
			HttpWebResponse response = request.GetResponse() as HttpWebResponse;
			StreamReader reader = new StreamReader(response.GetResponseStream());
			string html = reader.ReadToEnd();
			MatchCollection matches = Regex.Matches(html,"<h2>.*?</h2>",RegexOptions.Singleline);
			foreach (Match element in matches) {
				
				string header = Regex.Replace(element.Value, "<.*?>","");
				Console.WriteLine(header);
				Console.WriteLine();
			}
			Console.ReadLine();

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://mycsharp.ru");
			HttpWebResponse response = request.GetResponse() as HttpWebResponse;
			StreamReader reader = new StreamReader(response.GetResponseStream());
			string html = reader.ReadToEnd();
			MatchCollection matches = Regex.Matches(html,"<h2>.*</h2>",RegexOptions.Singleline);
			foreach (Match element in matches) {
				
				Console.WriteLine(element.Value);
			}
			Console.ReadLine();

 static void Main(string[] args)
        {
            string uri = "http://mycsharp.ru/";
            
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            
            StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
            Regex myReg = new Regex("(?<=color=\"\\#454545\" size=\"6\">)([^<]+)");
            MatchCollection matches = myReg.Matches(reader.ReadToEnd());
            foreach (Match m in matches)
                Console.WriteLine(m.Value);
            Console.ReadLine();
        }

using System;
using System.Text;
using System.Net;
using System.IO;
using System.Text.RegularExpressions;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string uri = "http://mycsharp.ru/";

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);

            //Console.BufferHeight = 500;       // раскомментировать, чтобы
            //request.UserAgent = "lesson34";   // увидеть разницу (пустой вывод)
            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);

            Regex myReg = new Regex("<a id=\"ContentPlaceHolder1_DataListPosts_HyperLink1");

            while (!reader.EndOfStream)
            {
                string str = reader.ReadLine();

                if (myReg.IsMatch(str))
                {
                    int posA = str.IndexOf("\"6\">") + 4; // 4 = размер текста '"6">'
                    int posB = str.IndexOf("</font>");
                    Console.WriteLine(str.Substring(posA, posB - posA));
                }
            }
            Console.ReadLine();
        }
    }
}