UrlPathEncode do not escape spaces
<p>I have Url with space and would like to replace spaces with %20(escape them). UrlPathEncode should do that but it do not works on url below which has spaces. Can someone explain why it is not working?</p>

<pre><code>System.Web.HttpUtility.UrlPathEncode("http://a1.quickcatchlabs.com/phototemplates/football_blimp_1.html?i_url=http://lh3.ggpht.com/yf5lVBB_WNBvBHT1HoIzY1SG0-PY5zRCobP3vBacuSk9N346F7CeAIRSFOltR6ZC1-yf-MNKAcAd7bAZ_A=s612-c&amp;i_name=Patriots  vs Redskins&amp;i_venue_name=Gillette Stadium &amp;i_venue_address=Foxborough , MA&amp;d_Score_0=34&amp;d_Score_1=27&amp;d_Period_0=Final&amp;p_name_0=Patriots &amp;p_name_1=Redskins");
</code></pre>
