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DataServiceQuery Class


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An abstract class that represents a single query request to WCF Data Services. 

Namespace:   System.Data.Services.Client
Assembly:  System.Data.Services.Client (in System.Data.Services.Client.dll)

Public MustInherit Class DataServiceQuery
	Inherits DataServiceRequest
	Implements IQueryable, IEnumerable
Name Description
System_CAPS_pubproperty ElementType

Gets the type of object submitted as a batch to the data service.(Inherited from DataServiceRequest.)

System_CAPS_pubproperty Expression

Represents an expression that contains the query to the data service.

System_CAPS_pubproperty Provider

Represents the query provider instance.

System_CAPS_pubproperty RequestUri

Gets the URI of the request object submitted to a data service.(Inherited from DataServiceRequest.)

Name Description
System_CAPS_pubmethod BeginExecute(AsyncCallback, Object)

Asynchronously sends a request to execute the data service query.

System_CAPS_pubmethod EndExecute(IAsyncResult)

Called to complete the asynchronous operation of executing a data service query.

System_CAPS_pubmethod Equals(Object)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_pubmethod Execute()

Executes the query against the data service.

System_CAPS_protmethod Finalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethod GetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethod GetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_protmethod MemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_pubmethod ToString()

Represents the URI of the query to the data service. (Inherited from DataServiceRequest.)

Name Description
System_CAPS_pubinterface System_CAPS_privmethod IEnumerable.GetEnumerator()

Gets the IEnumerator object that can be used to iterate through the collection returned by the query.

Name Description
System_CAPS_pubmethod AsParallel()

Overloaded. Enables parallelization of a query.(Defined by ParallelEnumerable.)

System_CAPS_pubmethod AsQueryable()

Overloaded. Converts an IEnumerable to an IQueryable.(Defined by Queryable.)

System_CAPS_pubmethod Cast<TResult>()

Converts the elements of an IQueryable to the specified type.(Defined by Queryable.)

System_CAPS_pubmethod OfType<TResult>()

Filters the elements of an IQueryable based on a specified type.(Defined by Queryable.)

No public constructors are defined on this class. Object instances are created by using M:System.Data.Services.Client.DataServiceContext.CreateQuery``1(System.Uri) or CreateQuery<T> on the DataServiceContext class.

.NET Framework
Available since 3.5
Available since 2.0

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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