DataServiceQueryContinuation(T) Class

DataServiceQueryContinuation<T> Class

Encapsulates a URI that returns the next page of a paged WCF Data Services query result. 


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

public sealed class DataServiceQueryContinuation<T> : DataServiceQueryContinuation

Type Parameters


The type of continuation token.

The DataServiceQueryContinuation<T> type exposes the following members.

Public propertyNextLinkUriGets the URI that is used to return the next page of data from a paged query result. (Inherited from DataServiceQueryContinuation.)

Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
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 a hash function for a particular type. (Inherited from Object.)
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 the next link URI as a string. (Inherited from DataServiceQueryContinuation.)

This example uses a do…while loop to load Customers entities from a paged results from the data service.

// Create the DataServiceContext using the service URI.
NorthwindEntities context = new NorthwindEntities(svcUri);
DataServiceQueryContinuation<Customer> token = null;
int pageCount = 0; 

    // Execute the query for all customers and get the response object.
    QueryOperationResponse<Customer> response =
        context.Customers.Execute() as QueryOperationResponse<Customer>;

    // With a paged response from the service, use a do...while loop 
    // to enumerate the results before getting the next link.
        // Write the page number.
        Console.WriteLine("Page {0}:", pageCount++);

        // If nextLink is not null, then there is a new page to load.
        if (token != null)
            // Load the new page from the next link URI.
            response = context.Execute<Customer>(token)
                as QueryOperationResponse<Customer>;

        // Enumerate the customers in the response.
        foreach (Customer customer in response)
            Console.WriteLine("\tCustomer Name: {0}", customer.CompanyName);

    // Get the next link, and continue while there is a next link.
    while ((token = response.GetContinuation()) != null);
catch (DataServiceQueryException ex)
    throw new ApplicationException(
        "An error occurred during query execution.", ex);

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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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