| Interface Summary | 
| AttributeQueryService | Provides methods for executing AttributeQueryinstances
 and preparing theAttributeQueryResultwith the result of the query | 
| ExpressionEvaluatorService | Provides evaluation of expression language statements against a given context | 
| ViewDictionaryService | Provides methods to query the dictionary meta-data for view entries and their
 corresponding component entries | 
| ViewHelperService | Provides methods for implementing the various phases of a ViewInitialize Phase: Invoked when the view is first requested to setup
 necessary state | 
| ViewService | Provides service methods for retrieving and updating Viewinstances. | 
| ViewTypeService | Provides methods handing Viewinstance of certain types |