DataServiceQuery<TElement>.IncludeTotalCount メソッド

定義

名前空間:

System.Data.Services.Client

アセンブリ:

System.Data.Services.Client.dll

エンティティ セット内のすべてのエンティティの数がクエリ結果と共にインラインで返されるように要求します。

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)

戻り値

DataServiceQuery<TElement>

インライン カウント オプションが設定された新しい DataServiceQuery<TElement> オブジェクト。

例

次の例では、IncludeTotalCount メソッドを呼び出した後でクエリを実行します。 TotalCount プロパティは、クエリで返されたエンティティの数を確認するために使用されます。

// 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

注釈

メソッドの IncludeTotalCount 呼び出しは、クエリ URI にクエリ オプションを $inlinecount 含めるのと同じです。