Using web.sitemap to hold SEO meta data

[Mark]

here's what i've got so far in my code beind

if (SiteMap.Curren tNode != null) {
if (SiteMap.Curren tNode["metaKeywor ds"] != null)
{
strMetaKeywords = SiteMap.Current Node["metaKeywor ds"];
strMetaDescript ion = SiteMap.Current Node.Descriptio n;
}
else
{
strMetaKeywords = "this is a test";
}
}

if (!Page.IsPostBa ck)
Page.DataBind() ;
}


So, it pulls Description and metaKeyword from the siteMapNode and
populates the webform meta tags. It work well. What i'm not sure how
to do is populate steMetakeywords or strMetaDescript ion with content
if there is no siteMapNode for a given web form (that's what i'm
attempting to do in the ELSE statement).

any ideas?