Getting an error when checking the length of a variable that might be null
<p>I am using the following:</p>

<pre><code>if (Model.Notes.Length == null || Model.Notes.Length &lt; 170) {
</code></pre>

<p>But there is an error when the Notes value is null. I thought this would allow it to work but I still get the error. Can someone tell me how I can make this work even if Model.Notes is null?</p>
