title: Eval() display custom value if null
body: <pre><code>&lt;td&gt;
      &lt;asp:Label ID="TypeOfPaintingLabel" runat="server"
                 Text='&lt;%# Eval("TypeOfPainting") %&gt;' /&gt;
  &lt;/td&gt;
  </code></pre>
  
  <p>Does anyone know how this works? I want to display <code>"NA"</code> if there is no value provided to <code>TypeOfPainting</code>.</p>