String.IsNullOrEmpty() Check for Space
<p>What is needed to make <code>String.IsNullOrEmpty()</code> count whitespace strings as empty?</p>

<p>Eg. I want the following to return <code>true</code> instead of the usual <code>false</code>:</p>

<pre><code>String.IsNullOrEmpty(" ");
</code></pre>

<p>Is there a better approach than:</p>

<pre><code> String.IsNullOrEmpty(" ".Trim());
</code></pre>

<p><em>(Note that the original question asked what the return would be normally hence the unsympathetic comments, this has been replaced with a more sensible question).</em></p>
