Type Checking: typeof, GetType, or is?
<p>I've seen many people use the following code:</p>

<pre><code>Type t = typeof(obj1);
if (t == typeof(int))
    // Some code here
</code></pre>

<p>But I know you could also do this:</p>

<pre><code>if (obj1.GetType() == typeof(int))
    // Some code here
</code></pre>

<p>Or this:</p>

<pre><code>if (obj1 is int)
    // Some code here
</code></pre>

<p>Personally, I feel the last one is the cleanest, but is there something I'm missing? Which one is the best to use, or is it personal preference?</p>
