/// <summary>
/// Gets the absolute value of the canonical URL, finding the value by
/// <see cref="P:MvcSiteMapProvider.ISiteMapNode.CanonicalKey"/> if necessary.
/// </summary>
/// <returns>The absolute canonical URL.</returns>
protected virtual string GetAbsoluteCanonicalUrl()
{
var url = this.canonicalUrl;
if (!String.IsNullOrEmpty(url))
{
if (urlPath.IsAbsoluteUrl(url))
{
return(url);
}
return(urlPath.MakeRelativeUrlAbsolute(url));
}
var key = this.canonicalKey;
if (!String.IsNullOrEmpty(key))
{
var node = this.SiteMap.FindSiteMapNodeFromKey(key);
if (node != null)
{
url = node.Url;
if (urlPath.IsAbsoluteUrl(url))
{
return(url);
}
return(urlPath.MakeRelativeUrlAbsolute(url));
}
}
return(String.Empty);
}
