title: Fast and Elegant way to control string is empty or not in C#
body: <p>I am try to control multiple strings variables is empty or not at once:</p>
  
  <p>My first approach is very simple:</p>
  
  <pre><code>if(string.isNullOrEmpty(val1) &amp;&amp; string.isNullOrEmpty(val2) &amp;&amp; string.isNullOrEmpty(val3))
  </code></pre>
  
  <p>My second way looks like this</p>
  
  <pre><code>if(string.isNullOrEmpty(val1 + val2 + val3))
  </code></pre>
  
  <p>Which one is fastest and elegant?
  Is there any options to do this operation?</p>