TaxonomySession.DefaultSiteCollectionTermStore Property
SharePoint 2010
Namespace:
Microsoft.SharePoint.Taxonomy
Assembly: Microsoft.SharePoint.Taxonomy (in Microsoft.SharePoint.Taxonomy.dll)
This setting is specified on the metadata application proxy connection. If multiple proxies associated with the SPWebApplication object of the SPSite site are marked as the default keyword TermStore, then this property will return null because there should only be a single default.