What's the difference between ToString("D2") .ToString("00")
<p>I just noticed some of my code uses:</p>

<pre><code>ToString("D2")
</code></pre>

<p>and other uses: </p>

<pre><code>.ToString("00")
</code></pre>

<p>Both are being used to convert numbers from 0 to 99 into strings from 00 to 99. That is strings where the numbers 0-9 have a leading zero. </p>

<p>Do both of these methods do the same thing?</p>
