title: get special posts of public channel Telegram without Bot Api and Telegram Api by c#
body: <p>I want to get special posts of  public channel Telegram  without Bot Api and Telegram Api by c#
  for example I want to get some post between two date
  I use this  code to get html of last posts of channel</p>
  <pre><code>      var url=&quot;https://t.me/s/channelusername&quot;;
       using (var client = new HttpClient())
            {
               response = await client.GetAsync(url);
               html = await response.Content.ReadAsStringAsync();
               document.LoadHtml(html);
           }
  </code></pre>
  <p>But this code gets 20 of the last posts. I want to paging parameter or pass DateTime or custom query string to url, But I don't know what to do?</p>