Gets the settings key value from DB.
            
Namespace: CMS.DataEngineAssembly: CMS.DataEngine (in CMS.DataEngine.dll) Version: 8.0.0.0 (8.1.5347.20411)
Parameters
- keyName
 - Type: 
System String
Key name 
- siteIdentifier
 - Type: CMS.DataEngine SiteInfoIdentifier
Site identifier (site ID or site name), see SiteInfoIdentifier and InfoIdentifier for more information 
Return Value
Type:See Also