url decode exception - c#
<p>I have some URL encoded data in a db (sql server 2005) which I decode to parse it. I use:</p>

<pre><code>Uri.UnescapeDataString
</code></pre>

<p>sometimes I get:</p>

<p>{"Invalid URI: There is an invalid sequence in the string."}</p>

<p>what invalid sequences do I have to look out for you reckon?</p>

<p>Thanks.</p>

<p>Christian</p>
