If you have a multi site/tenant Episerver setup and need an effective way to figure out the current SiteDefinition the SiteDefinitionResolver is the way to go. This may be very useful when you need to figure out the current StartPage, SiteUrl and similiar properties in a multi site environment.
Before Epi 10
var siteDefinitionResolover = ServiceLocator.Current.GetInstance<SiteDefinitionResolver>(); SiteDefinition siteDefinition = siteDefinitionResolover.GetDefinitionForContent( contentLink: contentLink, fallbackToWildcardMapped: true, fallbackToEmpty: true);
Epi 10 and later
var siteDefinitionResolover = ServiceLocator.Current.GetInstance<ISiteDefinitionResolver>(); SiteDefinition siteDefinition = siteDefinitionResolover.GetByContent( contentLink: this.ContentLink, fallbackToWildcard: true, fallbackToEmpty: true);
This will enable you to access the properties through the siteDefinition variable
// get the startpage of the stated contentLink var startPage = siteDefinition.StartPage;
// get the site url for the stated contentLink var siteUrl = siteDefinition.SiteUrl;
Read more on SiteDefinition and SiteDefinitionResolver