title: Replace List item with another of own choice
body: <p>have a list containing messages .I want when list contain a message like </p>
  
  <p><code>HelloHelloHello</code> , it should display <code>HELLO HELLO HELLO</code></p>
  
  <p>I have tried it. from here as well .I got </p>
  
  <pre><code>result.MessageList.Select&lt;string,string&gt;(s =&gt; s == "HelloHelloHello" ? "Hello Hello Hello" : s).ToList();
  </code></pre>
  
  <p>But it is not working for me.Help.</p>