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ObjectQuery Class

Implements common functionality for queries against a conceptual model using both LINQ to Entities and ObjectQuery<T>.

Namespace:  System.Data.Objects
Assembly:  System.Data.Entity (in System.Data.Entity.dll)
public abstract class ObjectQuery : IOrderedQueryable, 
	IQueryable, IEnumerable, IListSource

The ObjectQuery type exposes the following members.

  NameDescription
Public propertyCommandTextReturns the command text for the query.
Public propertyContextGets the object context associated with this object query.
Public propertyEnablePlanCachingGets or sets a value that indicates whether the query plan should be cached.
Public propertyMergeOptionGets or sets how objects returned from a query are added to the object context.
Public propertyParametersGets the parameter collection for this object query.
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  NameDescription
Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodExecuteExecutes the untyped object query with the specified merge option.
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetResultTypeReturns information about the result type of the query.
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Public methodToTraceStringReturns the commands to execute against the data source.
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  NameDescription
Public Extension MethodAsParallelEnables parallelization of a query. (Defined by ParallelEnumerable.)
Public Extension MethodAsQueryableConverts an IEnumerable to an IQueryable. (Defined by Queryable.)
Public Extension MethodCast<TResult>()Overloaded. Converts the elements of an IQueryable to the specified type. (Defined by Queryable.)
Public Extension MethodCast<TResult>()Overloaded. Casts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
Public Extension MethodOfType<TResult>()Overloaded. Filters the elements of an IQueryable based on a specified type. (Defined by Queryable.)
Public Extension MethodOfType<TResult>()Overloaded. Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)
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  NameDescription
Explicit interface implemetationPrivate methodIEnumerable.GetEnumeratorReturns an enumerator that iterates through a collection.
Explicit interface implemetationPrivate propertyIListSource.ContainsListCollectionGets a value that indicates whether the collection returned by the query contains collection objects.
Explicit interface implemetationPrivate methodIListSource.GetListReturns the collection as an IList used for data binding.
Explicit interface implemetationPrivate propertyIQueryable.ElementTypeGets the result element type for this query instance.
Explicit interface implemetationPrivate propertyIQueryable.ExpressionGets the expression describing this query.
Explicit interface implemetationPrivate propertyIQueryable.ProviderGets the LINQ IQueryProvider associated with this query instance.
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ObjectQuery is the base class for queries against a conceptual model. ObjectQuery is provided to ensure that LINQ to Entities queries have the same functionality as queries executed using ObjectQuery<T>. You must use ObjectQuery<T> with a specified type to query a conceptual model. For more information, see Object Queries (Entity Framework).

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5 SP1

.NET Framework Client Profile

Supported in: 4

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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