title: extracting string that starts with and ends with something in c#
body: <p>Here is the pattern:</p>
  
  <pre><code>string str =
     "+++++tom cruise 9:44AM something text here \r\n +++++mark taylor 9:21PM";
  </code></pre>
  
  <p>only string that starts with <code>+++++</code> and ends with <code>AM</code> or <code>PM</code> should get selected. What is Regex.split or linq query pattern?</p>