QueryOperationResponse<T>.GetContinuation Método

Definición

Espacio de nombres:

System.Data.Services.Client

Ensamblado:

System.Data.Services.Client.dll

Obtiene un objeto DataServiceQueryContinuation<T> que contiene el identificador URI que se usa para recuperar la siguiente página de resultados.

C#

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

Devoluciones

DataServiceQueryContinuation<T>

Objeto que contiene el URI que se usa para devolver la página siguiente de resultados.

Ejemplos

En este ejemplo se usa el GetContinuation método de un do…while bucle para cargar Customers entidades a partir de resultados paginados del servicio de datos.

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);
}

Se aplica a