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DataServiceQuery Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

An abstract class that represents a single query request to a data service.

Inheritance Hierarchy

System.Object
  System.Data.Services.Client.DataServiceRequest
    System.Data.Services.Client.DataServiceQuery
      System.Data.Services.Client.DataServiceQuery<TElement>

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

Syntax

'Declaration
Public MustInherit Class DataServiceQuery _
    Inherits DataServiceRequest _
    Implements IQueryable, IEnumerable
public abstract class DataServiceQuery : DataServiceRequest, 
    IQueryable, IEnumerable

The DataServiceQuery type exposes the following members.

Properties

  Name Description
Public property ElementType Gets the type of object submitted as a batch to the data service. (Inherited from DataServiceRequest.)
Public property Expression Represents an expression that contains the query to the data service.
Public property Provider Represents the query provider instance.
Public property RequestUri Gets the URI of the request object submitted to a data service. (Inherited from DataServiceRequest.)

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Methods

  Name Description
Public method BeginExecute Asynchronously sends a request to execute the data service query.
Public method EndExecute Called to complete the asynchronous operation of executing a data service query.
Public method Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Finalize Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public method GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetType Gets the Type of the current instance. (Inherited from Object.)
Protected method MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method ToString Represents the URI of the query to the data service. (Inherited from DataServiceRequest.)

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Extension Methods

  Name Description
Public Extension Method AsQueryable Converts an IEnumerable to an IQueryable. (Defined by Queryable.)
Public Extension Method Cast<TResult>() Overloaded. Converts the elements of an IQueryable to the specified type. (Defined by Queryable.)
Public Extension Method Cast<TResult>() Overloaded. Converts the elements of an IEnumerable to the specified type. (Defined by Enumerable.)
Public Extension Method OfType<TResult>() Overloaded. Filters the elements of an IQueryable based on a specified type. (Defined by Queryable.)
Public Extension Method OfType<TResult>() Overloaded. Filters the elements of an IEnumerable based on a specified type. (Defined by Enumerable.)

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Explicit Interface Implementations

  Name Description
Explicit interface implemetationPrivate method IEnumerable.GetEnumerator Gets the IEnumerator object that can be used to iterate through the collection returned by the query.

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Remarks

No public constructors are defined on this class. Object instances are created by using or CreateQuery<T> on the DataServiceContext class.

Version Information

Silverlight

Supported in: 5, 4, 3

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

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