ObjectQuery<T>.SelectValue<TResultType> Method (String, ObjectParameter[])
Limits the query results to only the property specified in the projection.
Assembly: EntityFramework (in EntityFramework.dll)
public ObjectQuery<TResultType> SelectValue<TResultType>( string projection, params ObjectParameter[] parameters )
Parameters
- projection
-
Type:
System.String
The projection list.
- parameters
-
Type:
System.Data.Entity.Core.Objects.ObjectParameter[]
An optional set of query parameters that should be in scope when parsing.
Return Value
Type: System.Data.Entity.Core.Objects.ObjectQuery<TResultType>A new ObjectQuery<T> instance of a type compatible with the specific projection. The returned ObjectQuery<T> is equivalent to the original instance with SELECT VALUE applied.
Type Parameters
- TResultType
The type of the ObjectQuery<T> returned by the SelectValue<TResultType> method.
Exception | Condition |
---|---|
ArgumentNullException | projection is null or parameters is null. |
ArgumentException | The projection is an empty string. |