title: Take 30 random elements from list
body: <p>I have a list of strings containing loads of hashtags with texts. 
  ex #csharp #java ect. 
  each hashtag is a own string in a List. I now want to randomly always console.writeline 30 items of that list. </p>
  
  <p>List</p>
  
  <pre><code>
  List&lt;string&gt; Hashtags = new List&lt;string&gt;();
  </code></pre>
  
  <p>Writeline</p>
  
  <pre><code>
   foreach (var x in Hashtags) {
  
                  Console.WriteLine(x);
              }
  </code></pre>
  
  <p>Ideally i never wanna have the same hashtag in the random 30.</p>