title: check list string is null or empty
body: <p>I have list  with empty space("<em>_</em>_")</p>
  
  <pre><code>List&lt;string&gt; MyList = (List&lt;string&gt;)Session["MyList "];
  
  if(MyList !=null || MyList != "")
  {
  }
  </code></pre>
  
  <p>MyList != "" does not work if string has more space so</p>
  
  <p>How can i check my list string is "" or null by using linq in c# ?</p>