DataServiceQuery<TElement>.IncludeTotalCount Método

Definición

Espacio de nombres:

System.Data.Services.Client

Ensamblado:

System.Data.Services.Client.dll

Solicita que el recuento de todas las entidades del conjunto de entidades se devuelva alineado con los resultados de la consulta.

public:
 System::Data::Services::Client::DataServiceQuery<TElement> ^ IncludeTotalCount();

public System.Data.Services.Client.DataServiceQuery<TElement> IncludeTotalCount ();

member this.IncludeTotalCount : unit -> System.Data.Services.Client.DataServiceQuery<'Element>

Public Function IncludeTotalCount () As DataServiceQuery(Of TElement)

Devoluciones

DataServiceQuery<TElement>

Nuevo objeto DataServiceQuery<TElement> que tiene establecida la opción de recuento alineado.

Ejemplos

En este ejemplo se ejecuta una consulta después de llamar al método IncludeTotalCount. La propiedad TotalCount se emplea para determinar el número de entidades devueltas por la consulta.

// Create the DataServiceContext using the service URI.
NorthwindEntities context = new NorthwindEntities(svcUri);

// Define a new query for Customers that includes the total count.
DataServiceQuery<Customer> query = context.Customers.IncludeTotalCount();

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

    // Retrieve the total count from the response.
    Console.WriteLine("There are a total of {0} customers.", response.TotalCount);

    // Enumerate the customers in the response.
    foreach (Customer customer in response)
    {
        Console.WriteLine("\tCustomer Name: {0}", customer.CompanyName);
    }
}
catch (DataServiceQueryException ex)
{
    throw new ApplicationException(
        "An error occurred during query execution.", ex);
}

' Create the DataServiceContext using the service URI.
Dim context = New NorthwindEntities(svcUri)

' Define a new query for Customers that includes the total count.
Dim query As DataServiceQuery(Of Customer) = _
context.Customers.IncludeTotalCount()

Try
    ' Execute the query for all customers and get the response object.
    Dim response As QueryOperationResponse(Of Customer) = _
        CType(query.Execute(), QueryOperationResponse(Of Customer))

    ' Retrieve the total count from the response.
    Console.WriteLine("There are a total of {0} customers.", response.TotalCount)

    ' Enumerate the customers in the response.
    For Each customer As Customer In response
        Console.WriteLine(vbTab & "Customer Name: {0}", customer.CompanyName)
    Next
Catch ex As DataServiceQueryException
    Throw New ApplicationException( _
            "An error occurred during query execution.", ex)
End Try

Comentarios

Llamar al IncludeTotalCount método equivale a incluir la $inlinecount opción de consulta en el URI de consulta.