QueryOperationResponse<T>.GetContinuation Method

Definition

Namespace:

System.Data.Services.Client

Assembly:

System.Data.Services.Client.dll

Gets a DataServiceQueryContinuation<T> object that contains the URI that is used to retrieve the next results page.

C#

public System.Data.Services.Client.DataServiceQueryContinuation<T> GetContinuation();

Returns

DataServiceQueryContinuation<T>

An object that contains the URI that is used to return the next results page.

Examples

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

C#

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

try
{
    // 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.
    do
    {
        // 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);
}

Applies to