title: How can I check if a field is not null?
body: <p>I am very new in <strong>C#</strong> (I came from Java) and I have the following question.</p>
  <p>In an application, on which I am working, I found something like it in the code:</p>
  <pre><code>if (!String.IsNullOrEmpty(u.nome))
  </code></pre>
  <p>This code simply check if the <code>nome</code> field of the <code>u</code> object is not an empty\null string.</p>
  <p>OK, this is very clear for me, but what can I do to check it if a field is not a string, but is a normal int?</p>