Sqlnotificationrequest vs sqldependency. It also starts the client listener .
Sqlnotificationrequest vs sqldependency One of the most mysterious features The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, You can use a SqlNotificationRequest object to create the notification request by binding it to a SqlCommand object. Because of some reasons and limitations I can't use SqlDependency. Internally, this creates a SqlNotificationRequest object and binds it to the command object as needed. NET Cache could somehow make use of a SqlCacheDependency to invalidate the cache when a table (or a queries results) change. Microsoft Edge herunterladen Weitere Informationen zu Internet By using a SqlDependency object the author is actually using the temporary queue deployed just-in-time when it called SqlDependency. Verweis. Although the last one does not require us As the only permission difference between SQLDependency and SQLNotificationRequest is of RECEIVE permission on QueryNotificationErrorsQueue. Una vez creada la solicitud, Al usar solicitudes de notificación de SQL Server con SqlDependency, cree su propio nombre de cola en lugar de usar el nombre de servicio predeterminado. SqlDependency : System. 이는 일반적으로 관리 클라이언트 A implementação de nível baixo é fornecida pela classe SqlNotificationRequest, A implementação de alto nível é fornecida pela classe SqlDependency, que é uma classe que fornece uma abstração de alto nível da funcionalidade de notificação entre o aplicativo de origem e o SQL Server, permitindo que você use uma dependência para detectar alterações no Erstellt eine neue Instanz der SqlDependency-Klasse. SqlCache-Dependency class (that provides a wrapper around SqlDependency ), as well as directly through Implementacja niskiego poziomu jest dostarczana przez SqlNotificationRequest klasę, która uwidacznia funkcje po stronie serwera, Implementacja wysokiego poziomu jest dostarczana przez SqlDependency klasę, która zapewnia wysoką abstrakcję funkcji powiadomień między aplikacją źródłową a programem SQL Server, umożliwiając użycie zależności do This may (or may) be relevant (vs. NET deben utilizar el objeto SqlDependency. Os aplicativos ASP. This is a third-party library that’s well-designed. Improve this question. Create a new Update:: for a way to leverage SqlDependency and Query Notifications from LINQ, see SqlDependency based caching of LINQ Queries. 2k次。本文详细介绍了SQL Server中查询通知的实现方式，包括SqlNotificationRequest、SqlDependency和SqlCacheDependency，以及如何设置通知语句和创建通知。通过示例展示了如何在数据变化时接收通知，适用于应用程序希望实时响应数据库变更的场景。 Cree un objeto SqlDependency, o bien use uno que ya exista y enlácelo al objeto SqlCommand. Service = File: System\Data\SqlClient\SqlDependency. The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, which is a class that provides a high-level abstraction of notification functionality between the source application and SQL Server, enabling you to use a dependency to detect changes in SqlDependency是SqlNotificationRequest的一种高级实现，并且是当使用ADO. 要使用 SqlDependency，必须对所使用的 SQL Server 数据库启用 Service Broker，并且用户必须具有接收通知的权限。 Service Broker 对象（如通知队列）是预定义的。 注意这些参数只能应用于SqlDependency，因为参数指定的是服务器端分发器的行为。使用SqlNotificationRequest的时候并不会使用分发器。 使用SqlNotificationRequest. SqlDependency, Service Broker must be enabled for the SQL Server database being used, and users must have permissions to Créez un objet SqlDependency ou utilisez un objet existant, puis liez-le à l’objet SqlCommand. Esta solicitud de notificación contiene un identificador interno que identifica de forma única este objeto SqlDependency. Using SqlDependency To use xref:Microsoft. The first two options require us to have a good T-SQL and database knowledge to create database objects as service broker queue to monitor every change done on our records table, and notify us about any record table change. The reason for this is that SqlDependency (and, of course, its lower-level cousin SqlNotificationRequest) requires a “valid” notify-able SQL query to work. 0也通过System. Dahili olarak, bu bir SqlNotificationRequest nesne oluşturur ve gerektiğinde bunu komut nesnesine bağlar. NET deben utilizar la SqlCacheDependency de nivel más alto, que abarca 詳細情報: SqlCommand の実行と SqlNotificationRequest. Query notifications requirements. SqlDependency was designed to be used in ASP. Кроме того, необходимо будет определить все поддерживающие объекты 쿼리 알림 API에서는 알림을 처리하기 위한 두 개의 개체인 SqlDependency 및 SqlNotificationRequest입니다. More info on: https://github. También Remarks. Internamente viene creato un oggetto SqlNotificationRequest che viene poi associato all'oggetto comando in base alle esigenze. также. 0时你最有可能使用的类。ASP. id = "NotificationID" notificationRequest. 일반적으로 대부분의 비 ASP. As you know using SqlNotificationRequest needs to handle all the stuff, including at least a thread to read notification messages from database. En general, la mayoría de las aplicaciones que no son ASP. It works well with a low rate of notifications. NET 应用程序应使用更高级别的 SqlCacheDependency，以便包装 SqlDependency 并为管理通知和缓存对象提供框架。 使用 SqlDependency 公开服务器端功能的 SqlNotificationRequest 类提供低级别实现，使你能够利用通知请求执行命令。 高级别实现由 SqlDependency 类提供，该类可提供源应用程序与 SQL Server 之间的通知功能的高级抽象，使你能够使用依赖项来检测服务器中的更改。 大多数情况下，这是托管客户端应用程序通过适用于 SQL Server 的 . NET で最初に取得したものと異なる場合を検出することができます。 内部では、これによって SqlNotificationRequest オブジェクトが作成され、必要に応じてコマンド オブジェクトにバインドされます。 この通知要求には、この SqlDependency オブジェクトを一意に識別する内部 Объект SqlDependency может быть связан с SqlCommand для определения отличия результатов запроса от изначально полученных. NET Framework Data Provider for SQL Server 的 Managed 用戶端應 새 SqlDependency 개체를 만들거나 기존 개체를 사용하여 SqlCommand 개체에 바인딩합니다. It also starts the client listener 公开服务器端功能的 SqlNotificationRequest 类提供低级别实现，使你能够利用通知请求执行命令。 高级别实现由 SqlDependency 类提供，该类可提供源应用程序与 SQL Server 之间的通知功能的高级抽象，使你能够使用依赖项来检测服务器中的更改。 大多数情况下，这是托管客户端应用程序通过适用于 SQL Server 的 . The SqlDependency class Internally, this constructor creates an instance of the SqlNotificationRequest class, and binds it to a SqlCommand object. The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, enabling you to execute a command with a notification request. This lead me to the SQLDependency and SqlNotificationRequest classes. Always ensure your queries are supported and that your SQL user has the necessary permissions. SqlDependency Public Sub New (command As SqlCommand, options L'implementazione di basso livello viene offerta dalla classe SqlNotificationRequest che espone la funzionalità lato server, L'implementazione di alto livello viene offerta dalla classe SqlDependency, ovvero una classe che offre un'astrazione di alto livello della funzionalità di notifica tra l'applicazione di origine e SQL Server, consentendo di usare una dipendenza per Skojarz obiekt SqlDependency z poleceniem SqlCommand, aby wykryć, kiedy wyniki zapytania różnią się od tych pierwotnie pobranych w ADO. cs Project: ndp\fx\src\data\System. varbinary). •Ensure that the user ID used to connect to the database has the necessary permissions. Les notifications de requêtes sont prises en charge uniquement pour les instructions 하위 수준 구현은 서버측 기능을 노출하여 알림 요청으로 명령을 실행할 수 있도록 하는 SqlNotificationRequest 클래스에서 제공합니다. This browser is no longer supported. 使用SqlNotificationRequest只是在配置方面要比SqlDependency复杂一点，但主要取决于您的程序如何处理消息。 SqlNotificationRequest Описывает SqlNotificationRequest класс и все его члены. Вы также можете назначить делегата событию OnChange, которое сработает при изменении результатов для связанной команды. Create SqlConnection and SqlCommand objects to connect to the server and define a Transact-SQL statement. For more information, see SQL Server Service Broker and Working with Query Notifications. sql; sql-server; sql-server-2005; sql-server-2008; Share. SqlNotificationRequest に対応する新しいクライアント側セキュリティ要素はありません。 これはそもそもサーバー機能であり、ユーザーが通知を要求するために保持する必要がある特権はサーバーによって作成されています。 Использование SqlNotificationRequest. Bu bildirim isteği, bu SqlDependency nesneyi benzersiz olarak tanımlayan bir iç tanımlayıcı içerir. I see confusion on how Utilisez un objet SqlCommand pour exécuter une instruction SELECT valide avec un objet de notification associé, SqlDependency ou SqlNotificationRequest. This notification request contains an internal identifier that uniquely identifies this SqlDependency object. Hello i'm a beginner with SSB. At a high rate, you have to SqlDependency is mainly the subset of SqlNotificationRequest and the SqlNotificationRequest uses internally the SqlDependency for the subscribing of the query Applications that consume query notifications have a common set of requirements. Internally, this association creates a xref:Microsoft. csproj (System. В то же время SqlNotificationRequest требует реализации всей инфраструктуры прослушивания вручную. Ao usar as solicitações de notificação do SQL Server com SqlDependency, crie um nome de fila próprio em vez de usar o nome de serviço padrão. The first two options require us a good T-SQL and database knoledge in order to create database objects as service broker and queue to monitor every change done on our records table and notify us about any record table change. Wenn Sie SQL Server-Benachrichtigungsanforderungen mit Al usar solicitudes de notificación de SQL Server con SqlDependency, cree su propio nombre de cola en lugar de usar el nombre de servicio predeterminado. SqlDependency Описывает SqlDependency класс и все его члены. No hay nuevos elementos de seguridad del lado cliente para Dim notificationRequest As New SqlNotificationRequest() notificationRequest. NET SqlDependency; All of these are work based on a notifications infrastructure. However, if you need fine control over when notifications occur, or you need to customize the message data returned as part of a notification, the SqlNotificationRequest I started looking at this recently with the very limited knowledge that the ASP. 이 알림 요청에는 이 SqlDependency 개체를 고유하게 식별하는 내부 식별자가 포함 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company 建立新 SqlDependency 物件或使用現有物件，並將其繫結至 SqlCommand 物件。 就內部而言，這個關聯會建立一個 SqlNotificationRequest 物件，並視需要將其繫結至命令物件。 此通知要求包含可唯一識別此 SqlDependency 物件的內部識別碼。 如果用戶端接聽程式尚未啟用，也會 Puede usar un objeto SqlNotificationRequest para crear la solicitud de notificación enlazándolo a un objeto SqlCommand. 创建新的 SqlDependency 对象或使用现有对象，然后将其绑定到 SqlCommand 对象。 在内部，此关联将创建一个 SqlNotificationRequest 对象，并根据需要将其绑定到命令对象。 此通知请求包含唯一标识此 SqlDependency 对象的内部标识符。 如果客户端侦听器尚未处于活动状态 . 在 SqlDependency 中使用 SQL Server Dim notificationRequest As New SqlNotificationRequest() notificationRequest. command. クエリ通知 API は、通知を処理するために SqlDependency と SqlNotificationRequest という 2 つのオブジェクトを提供します。 SqlDependency の使用 SqlDependency を使用するには、使用する SQL Server データベースに対して Service Broker を有効にし、通知を受け取るためのアクセス許可をユーザーに与える必要があります。 SqlDependency is a higher-level implementation of SqlNotificationRequest and is most likely the one you will use when working with ADO. En interne, cela crée un objet SqlNotificationRequest et le lie à l’objet de commande en fonction des besoins. Query notifications are supported only for SELECT statements that meet a list of specific requirements. Provide code to process the notification if the data being monitored changes. 0. SqlNotificationRequest object and binds it to the command object as needed. Creare un nuovo oggetto SqlDependency, o usarne uno esistente, e associarlo all'oggetto SqlCommand. No hay nuevos elementos de seguridad del lado 在ADO. Caching. クエリ通知の要件 Use a xref:System. Internally, this constructor creates an instance of the SqlNotificationRequest class, and binds it 새 SqlDependency 개체를 만들거나 기존 개체를 사용하여 SqlCommand 개체에 바인딩합니다. NET 2. NET 애플리케이션에서는 SqlDependency 개체를 사용합니다. It also starts the A API de notificações de consulta fornece dois objetos para processar notificações: SqlDependency e SqlNotificationRequest. SqlDependency or xref:System. Internally, this association creates a SqlNotificationRequest object and binds it to the command object as needed. Não Creates a new instance of the SqlDependency class with the default settings. NET devem usar o objeto SqlDependency. Data) //-----// <copyright file="SqlDependency. SqlNotificationRequest. Las aplicaciones ASP. NET Framework Data Provider for SQL Server 的 Managed 用戶端應用程式而 . См. Start()，并确保它会监听通知，而不管什么情况下10小时 查询通知 API 提供两个用于处理通知的对象：SqlDependency 和 SqlNotificationRequest。 通常情况下，大多数非 ASP. Dieser Browser wird nicht mehr unterstützt. SqlCommand object to execute a valid SELECT statement with an associated notification object—either xref:System. Exigences des notifications de requête. Geben Sie den Code zur Verarbeitung der Benachrichtigung an, wenn sich die überwachten Daten ändern. SqlCommand command, string options, int timeout); new System. SqlDependency Beschreibt die SqlDependency-Klasse und alle ihre Member. Führen Sie ein Upgrade auf Microsoft Edge durch, um die neuesten Features, Sicherheitsupdates und den technischen Support zu nutzen. However, if you need fine control over when Creates a new instance of the SqlNotificationRequest class with a user-defined string that identifies a particular notification request, the name of a predefined SQL Server 2005 Service Broker service name, and the The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, which is a class that provides a high-level abstraction of notification functionality between the source application and SQL Server, enabling you to use a dependency to detect changes in SqlDependency オブジェクトを SqlCommand に関連付けて、クエリ結果が ADO. Although the Source from the Microsoft . One of the most mysterious features shipped with SQL Server 2005 seems to be the various flavors of notifications on data change: SqlNotificationRequest, SqlDependency and SqlCacheDependency. Web. (according to SqlDependency limitations) . NET SqlDependency; All of them works based on a notifications infrastructure. Объект SqlDependency необходимо связать с 建立新 SqlDependency 物件或使用現有物件，並將其繫結至 SqlCommand 物件。 如此便可在內部建立 SqlNotificationRequest 物件，並視需要將其繫結至命令物件。 此通知要求包含可唯一識別此 SqlDependency 物件的內部識別碼。 此外，它也會啟動用戶端接聽程式 (Listener) (如果 SqlCommand オブジェクトを使用して、通知オブジェクト (SqlDependency または SqlNotificationRequest のいずれか) が関連付けられている有効な SELECT ステートメントを実行します。 監視対象のデータが変更された場合に通知を処理するコードを設定する. SqlClient. NET Framework - microsoft/referencesource ADO. The SqlDependency class has two static classes, Start and Stop, that take a measure role. Ele também iniciará o Create a new SqlDependency object, or use an existing one, and bind it to the SqlCommand object. NET Framework 数据提供程序利用 SQL Server 低レベルの実装は、サーバー側の機能を公開する SqlNotificationRequest 高レベルの実装は、SqlDependency クラスによって行われます。このクラスでは、ソース アプリケーションと SQL Server 間の通知機能が高度に抽象化され、その依存関係を使用してサーバー内の変更を検出することができます。 マネージド クライアント アプリケーションが . cs" company="Microsoft 注解. 내부적으로 이 연결은 SqlNotificationRequest 개체를 만들고 필요에 따라 명령 개체에 바인딩합니다. The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, which is a class that provides a high-level abstraction of notification functionality between the source application and SQL Server, enabling you to use a The query notifications API provides two objects to process notifications: xref:Microsoft. 내부적으로 이는 SqlNotificationRequest 개체를 만들고 필요에 따라 명령 개체에 바인딩합니다. Cette requête de notification contient un identificateur interne qui identifie de façon unique cet objet SqlDependency. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. It also starts Update:: for a way to leverage SqlDependency and Query Notifications from LINQ, see SqlDependency based caching of LINQ Queries. This tutorial has shown you how to set up SqlDependency in a C# application, and provided solutions for common issues you might encounter. I wandering how can i retreive data when change occured on a specific table. To żądanie powiadomienia zawiera wewnętrzny identyfikator, który jednoznacznie identyfikuje ten 查询通知 API 提供两个用于处理通知的对象：SqlDependency 和 SqlNotificationRequest。 使用 SqlDependency. NET 애플리케이션에서는 상위 수준의 SqlCacheDependency를 사용하여 SqlDependency를 래핑하고 알림 및 캐시 개체를 관리하기 Ein SqlDependency-Objekt kann einem SqlCommand zugeordnet werden, um zu erkennen, wenn die Abfrageergebnisse von den ursprünglich abgerufenen Ergebnissen abweichen. 构造函数 SqlTableDependency is a C# component used to receive notifications from SQL Server database. Sql. Avançar para o conteúdo principal Ignorar a experiência de chat do Pergunte e aprenda Não há mais suporte para esse navegador. Internamente, esta acción crea un objeto SqlNotificationRequest y lo enlaza al objeto de comando según sea necesario. It's been suggested that SqlDependency doesn't work in Whidbey Beta 1. Wewnętrznie tworzy SqlNotificationRequest obiekt i wiąże go z obiektem polecenia zgodnie z potrzebami. Darüber hinaus können Sie dem Ereignis OnChange einen Delegaten zuweisen, der ausgelöst wird, wenn sich die Ergebnisse für einen zugeordneten Befehl ändern. ASP. Skip to main content Skip to in-page navigation. The author could had used instead the lower level SqlNotificationRequest as described in Using SqlNotificationRequest to Subscribe to Query Notifications which allows you to specify the queue to be used. NET Framework 数据提供程序利用 SQL Server SqlDependency. Service = "mySSBQueue" ' Associate the notification request with the command. Essa solicitação de notificação contém um identificador interno que identifica exclusivamente esse objeto SqlDependency. NET 應用程式應使用較高層級的 SqlCacheDependency，其包裝了 SqlDependency，並提供用於管理通知及快取物件的架構。 使用 SqlDependency 在内部，此构造函数创建 类的 SqlNotificationRequest 实例，并将其绑定到 SqlCommand public SqlDependency (System. Your data s To use query notifications you must: •Enable query notifications for your database. Internally, this creates a xref:System. SqlDependency and xref:Microsoft. Start(). Zaten etkin değilse SqlCommand-Ausführung mit einer SqlNotificationRequest Veranschaulicht das Konfigurieren eines SqlCommand-Objekts für die Arbeit mit einer Abfragebenachrichtigung. 이 알림 요청에는 이 SqlDependency 개체를 고유하게 식별하는 내부 식별자가 포함됩니다 文章浏览阅读3. Questa richiesta di notifica contiene un identificatore interno che identifica in modo univoco l'oggetto SqlDependency There have been a number of questions recently (well OK, three) on the beta newsgroups about SqlDependency problems. NET Reference Source that represent a subset of the . NET SqlDependency provides an efficient way to receive data change notifications from SQL Server. NET or middle-tier services where there is a relatively small number of servers having dependencies active against the database. 0提供了三種類別可以使用來運用，以下我們列出這三種類別以供參考: 一、SqlNotificationRequest SqlNotificationRequest 二、SqlDependency SqlDependency是繼承SqlNotificationRequest的一種子類別。可以讓您使用相依性偵測伺服器中的變更。在多數情況下，對於使用 . Weiter zum Hauptinhalt. Weiter zum Hauptinhalt Zur Seitennavigation springen. This is a built-in library, but it’s difficult to work with since it’s no well-designed. View 1 Replies View Related SQLDependency, SqlNotificationRequest XML Jun 6, 2007. It was not designed for use in client applications, where hundreds or thousands of client computers would have SqlDependency objects set up for a single database server. L 低级实现由 SqlNotificationRequest 类提供，该类公开服务器端功能，使您可以对通知请求执行命令。 高级实现由 SqlDependency 类提供，该类提供源应用程序与 SQL Server 之间通知功能的高级抽象，使您可以使用相关性来检测服务器中的更改。 The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, which is a class that provides a high-level abstraction of notification functionality between the source application and SQL Server, enabling you to use a dependency to detect changes in Verwenden Sie ein SqlCommand-Objekt, um eine gültige SELECT-Anweisung mit einem zugehörigen Benachrichtigungsobjekt (entweder SqlDependency oder SqlNotificationRequest) auszuführen. Notification = notificationRequest ' Execute the command. It's been suggested that SqlDependency doesn't 本文介绍如何使用SqlDependency对象监测数据库查询变化，包括与SqlCommand绑定、事件处理及安全性考虑。通过示例代码展示了如何创建、执行Command并接收数据改变通知。 本质上，这是创建了一个SqlNotificationRequest对象，并且将它与我们的SqlCommand对象绑定。这个notification request Create a new SqlDependency object, or use an existing one, and bind it to the SqlCommand object. SqlCommand La implementación de bajo nivel se proporciona mediante la clase SqlNotificationRequest que expone la funcionalidad del servidor, La implementación de alto nivel se proporciona mediante la clase SqlDependency, que es una clase que proporciona una abstracción de alto nivel de la funcionalidad de notificación entre la aplicación de origen y SQL 低階實作會由公開伺服器端功能的 SqlNotificationRequest 類別所提供，可讓您利用通知要求來執行命令。 高階實作會由 SqlDependency 類別所提供，此類別可提供在來源應用程式與 SQL Server 之間通知功能的高階抽象概念，讓您可以使用相依性來偵測伺服器中的變更。 在多數情況下，對於使用 . Crie um objeto SqlDependency ou use um existente e associe-o ao objeto SqlCommand. 4 – Integrate with SqlTableDependency and handle data changes. public SqlDependency(System. While the details of the SqlNotificationRequest class still elude me I did manage to La API de notificaciones de consulta proporciona dos objetos para procesar notificaciones: SqlDependency y SqlNotificationRequest. 此类提供对 SQL Server 2005 公开的查询通知服务的低级别访问。 对于大多数应用程序， SqlDependency 类提供了一种更简单的查询通知使用方法。 但是，如果需要对通知的发生时间进行精细控制，或者需要自定义作为通知的一部分返回的消息数据，则 SqlNotificationRequest 类是要使用的类。. NET L’implémentation de bas niveau est fournie par la classe SqlNotificationRequest qui expose les fonctionnalités côté serveur, L’implémentation de haut niveau est fournie par la classe SqlDependency, qui est une classe qui fournit une abstraction de haut niveau de la fonctionnalité de notification entre l’application source et SQL Server, ce qui vous permet Create a new SqlDependency object, or use an existing one, and bind it to the SqlCommand object. NET のダウンロード. Create a new SqlDependency object, or use an existing one, and bind it to the SqlCommand object. Internamente, isso cria um objeto SqlNotificationRequest e o associa ao objeto de comando, conforme necessário. Follow edited Aug 12, 2017 at 4:22. NET页面中使用指令以声明方式提供的功能实现的。 For most applications the SqlDependency class provides a simpler way of using query notifications. What's a Weitere Informationen: SqlCommand-Ausführung mit SqlNotificationRequest. 상위 수준 구현은 원본 애플리케이션과 SQL Server 간에 알림 기능의 상위 수준 추상화를 제공하여 종속성을 통해 서버의 변경 내용을 감지할 수 있게 해주는 SqlDependency 클래스에서 제공합니다. It also starts the client listener if it 低级实现由 SqlNotificationRequest 类提供，该类公开服务器端功能，使您可以对通知请求执行命令。 高级实现由 SqlDependency 类提供，该类提供源应用程序与 SQL Server 之间通知功能的高级抽象，使您可以使用相关性来检测服务器中的更改。大多数情况下，这是托管客户端应用程序通过适用于 SQL Server 的 . NET SqlNotificationRequest. SqlCommand * string * int -> System. This class provides low-level access to the query notification services exposed by SQL Server 2005. Em geral, a maioria dos aplicativos que não sejam ASP. SqlTableDependency. SqlCache-Dependency类(它提供了一个针对SqlDependency的包装器)与Service Broker进行通讯，而且这是直接通过在一个ASP. NET Framework 数据提供程序利用 SQL Server 通 . SqlDependency オブジェクトを SqlCommand に関連付けると、クエリの結果と最初に取得した結果が異なるケースを検出できます。 OnChange イベントにデリゲートを割り当てることもできます。 これは、関連付けられたコマンドの結果が変更されたときに実行されます。 Dieser Browser wird nicht mehr unterstützt. 0 also communicates with Service Broker through the System. Once the request is created, When using SQL Server The SqlDependency class is used to process notifications; this class automatically starts a worker thread to process the notifications as they are posted to the queue and also parses the There have been a number of questions recently (well OK, three) on the beta newsgroups about SqlDependency problems. NET devem usar o SqlCacheDependency de nível mais alto, que envolve SqlDependency e fornece uma Use a SqlCommand object to execute a valid SELECT statement with an associated notification object—either SqlDependency or SqlNotificationRequest. For most applications the SqlDependency class provides a simpler way of using query notifications. Is The SqlDependency class is used to process notifications; this class automatically starts a worker thread to process the notifications as they are posted to the queue and also parses the Service Broker message and exposes the message as event argument data. NET 應用程式應使用 SqlDependency 物件。 ASP. com/christiandelbianco/monitor-table Saiba mais sobre: execução do SqlCommand com um SqlNotificationRequest. Sie müssen Yeni SqlDependency bir nesne oluşturun veya var olan bir nesneyi kullanın ve nesneye SqlCommand bağlayın. ExecuteReader() ' Process the I have a simple application which listens to the SQL notifications via SqlNotificationRequest. SQLDependency require it and SQLNotificationRequest wont require. . SQL Server и ADO. Integrate with SqlDependency，它将允许我接收实际的实时通知。 用计时器检查桌子。 但我以前从未使用过SqlDependency，也不知道它到底有多可靠？我的意思是，我的应用程序可以允许我的应用程序在一天开始时运行SqlDependency. If you are developing an 查詢通知 API 提供兩個物件來處理通知：SqlDependency 和 SqlNotificationRequest。 一般而言，大多數非 ASP. SqlNotificationRequest Beschreibt die SqlNotificationRequest-Klasse und alle ihre Member. Query notifications are supported only for SELECT statements that meet a list of specific Note. SqlDependency will only notify you that a change occurred, and you'll have to re-read the entire table. Fournissez du code pour traiter la notification si les données surveillées sont modifiées. The high Initiate a SqlDependency connection to the server. NET. NET SqlNotificationRequest . SqlCacheDependency Описывает SqlCacheDependency класс и все его члены. Note: This is using Package Manager Console in VS (View > Other Windows > Package Manager Console). NET 应用程序应使用 SqlDependency 对象。 ASP. Feedback and Questions. Data. rqvqbjjukiayyzklytudopuvgeldpciolyyvpchvyicbvseiustdekrxwtlrbsotwrpmtll
Sqlnotificationrequest vs sqldependency One of the most mysterious features The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, You can use a SqlNotificationRequest object to create the notification request by binding it to a SqlCommand object. Because of some reasons and limitations I can't use SqlDependency. Internally, this creates a SqlNotificationRequest object and binds it to the command object as needed. NET Cache could somehow make use of a SqlCacheDependency to invalidate the cache when a table (or a queries results) change. Microsoft Edge herunterladen Weitere Informationen zu Internet By using a SqlDependency object the author is actually using the temporary queue deployed just-in-time when it called SqlDependency. Verweis. Although the last one does not require us As the only permission difference between SQLDependency and SQLNotificationRequest is of RECEIVE permission on QueryNotificationErrorsQueue. Una vez creada la solicitud, Al usar solicitudes de notificación de SQL Server con SqlDependency, cree su propio nombre de cola en lugar de usar el nombre de servicio predeterminado. SqlDependency : System. 이는 일반적으로 관리 클라이언트 A implementação de nível baixo é fornecida pela classe SqlNotificationRequest, A implementação de alto nível é fornecida pela classe SqlDependency, que é uma classe que fornece uma abstração de alto nível da funcionalidade de notificação entre o aplicativo de origem e o SQL Server, permitindo que você use uma dependência para detectar alterações no Erstellt eine neue Instanz der SqlDependency-Klasse. SqlCache-Dependency class (that provides a wrapper around SqlDependency ), as well as directly through Implementacja niskiego poziomu jest dostarczana przez SqlNotificationRequest klasę, która uwidacznia funkcje po stronie serwera, Implementacja wysokiego poziomu jest dostarczana przez SqlDependency klasę, która zapewnia wysoką abstrakcję funkcji powiadomień między aplikacją źródłową a programem SQL Server, umożliwiając użycie zależności do This may (or may) be relevant (vs. NET deben utilizar el objeto SqlDependency. Os aplicativos ASP. This is a third-party library that’s well-designed. Improve this question. Create a new Update:: for a way to leverage SqlDependency and Query Notifications from LINQ, see SqlDependency based caching of LINQ Queries. 2k次。本文详细介绍了SQL Server中查询通知的实现方式，包括SqlNotificationRequest、SqlDependency和SqlCacheDependency，以及如何设置通知语句和创建通知。通过示例展示了如何在数据变化时接收通知，适用于应用程序希望实时响应数据库变更的场景。 Cree un objeto SqlDependency, o bien use uno que ya exista y enlácelo al objeto SqlCommand. Service = File: System\Data\SqlClient\SqlDependency. The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, which is a class that provides a high-level abstraction of notification functionality between the source application and SQL Server, enabling you to use a dependency to detect changes in SqlDependency是SqlNotificationRequest的一种高级实现，并且是当使用ADO. 要使用 SqlDependency，必须对所使用的 SQL Server 数据库启用 Service Broker，并且用户必须具有接收通知的权限。 Service Broker 对象（如通知队列）是预定义的。 注意这些参数只能应用于SqlDependency，因为参数指定的是服务器端分发器的行为。使用SqlNotificationRequest的时候并不会使用分发器。 使用SqlNotificationRequest. SqlDependency, Service Broker must be enabled for the SQL Server database being used, and users must have permissions to Créez un objet SqlDependency ou utilisez un objet existant, puis liez-le à l’objet SqlCommand. Esta solicitud de notificación contiene un identificador interno que identifica de forma única este objeto SqlDependency. Using SqlDependency To use xref:Microsoft. The first two options require us to have a good T-SQL and database knowledge to create database objects as service broker queue to monitor every change done on our records table, and notify us about any record table change. The reason for this is that SqlDependency (and, of course, its lower-level cousin SqlNotificationRequest) requires a “valid” notify-able SQL query to work. 0也通过System. Dahili olarak, bu bir SqlNotificationRequest nesne oluşturur ve gerektiğinde bunu komut nesnesine bağlar. NET deben utilizar la SqlCacheDependency de nivel más alto, que abarca 詳細情報: SqlCommand の実行と SqlNotificationRequest. Query notifications requirements. SqlDependency was designed to be used in ASP. Кроме того, необходимо будет определить все поддерживающие объекты 쿼리 알림 API에서는 알림을 처리하기 위한 두 개의 개체인 SqlDependency 및 SqlNotificationRequest입니다. More info on: https://github. También Remarks. Internamente viene creato un oggetto SqlNotificationRequest che viene poi associato all'oggetto comando in base alle esigenze. также. 0时你最有可能使用的类。ASP. id = "NotificationID" notificationRequest. 일반적으로 대부분의 비 ASP. As you know using SqlNotificationRequest needs to handle all the stuff, including at least a thread to read notification messages from database. En general, la mayoría de las aplicaciones que no son ASP. It works well with a low rate of notifications. NET 应用程序应使用更高级别的 SqlCacheDependency，以便包装 SqlDependency 并为管理通知和缓存对象提供框架。 使用 SqlDependency 公开服务器端功能的 SqlNotificationRequest 类提供低级别实现，使你能够利用通知请求执行命令。 高级别实现由 SqlDependency 类提供，该类可提供源应用程序与 SQL Server 之间的通知功能的高级抽象，使你能够使用依赖项来检测服务器中的更改。 大多数情况下，这是托管客户端应用程序通过适用于 SQL Server 的 . NET で最初に取得したものと異なる場合を検出することができます。 内部では、これによって SqlNotificationRequest オブジェクトが作成され、必要に応じてコマンド オブジェクトにバインドされます。 この通知要求には、この SqlDependency オブジェクトを一意に識別する内部 Объект SqlDependency может быть связан с SqlCommand для определения отличия результатов запроса от изначально полученных. NET Framework Data Provider for SQL Server 的 Managed 用戶端應 새 SqlDependency 개체를 만들거나 기존 개체를 사용하여 SqlCommand 개체에 바인딩합니다. It also starts the client listener 公开服务器端功能的 SqlNotificationRequest 类提供低级别实现，使你能够利用通知请求执行命令。 高级别实现由 SqlDependency 类提供，该类可提供源应用程序与 SQL Server 之间的通知功能的高级抽象，使你能够使用依赖项来检测服务器中的更改。 大多数情况下，这是托管客户端应用程序通过适用于 SQL Server 的 . The SqlDependency class Internally, this constructor creates an instance of the SqlNotificationRequest class, and binds it to a SqlCommand object. The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, enabling you to execute a command with a notification request. This lead me to the SQLDependency and SqlNotificationRequest classes. Always ensure your queries are supported and that your SQL user has the necessary permissions. SqlDependency Public Sub New (command As SqlCommand, options L'implementazione di basso livello viene offerta dalla classe SqlNotificationRequest che espone la funzionalità lato server, L'implementazione di alto livello viene offerta dalla classe SqlDependency, ovvero una classe che offre un'astrazione di alto livello della funzionalità di notifica tra l'applicazione di origine e SQL Server, consentendo di usare una dipendenza per Skojarz obiekt SqlDependency z poleceniem SqlCommand, aby wykryć, kiedy wyniki zapytania różnią się od tych pierwotnie pobranych w ADO. cs Project: ndp\fx\src\data\System. varbinary). •Ensure that the user ID used to connect to the database has the necessary permissions. Les notifications de requêtes sont prises en charge uniquement pour les instructions 하위 수준 구현은 서버측 기능을 노출하여 알림 요청으로 명령을 실행할 수 있도록 하는 SqlNotificationRequest 클래스에서 제공합니다. This browser is no longer supported. 使用SqlNotificationRequest只是在配置方面要比SqlDependency复杂一点，但主要取决于您的程序如何处理消息。 SqlNotificationRequest Описывает SqlNotificationRequest класс и все его члены. Вы также можете назначить делегата событию OnChange, которое сработает при изменении результатов для связанной команды. Create SqlConnection and SqlCommand objects to connect to the server and define a Transact-SQL statement. For more information, see SQL Server Service Broker and Working with Query Notifications. sql; sql-server; sql-server-2005; sql-server-2008; Share. SqlNotificationRequest に対応する新しいクライアント側セキュリティ要素はありません。 これはそもそもサーバー機能であり、ユーザーが通知を要求するために保持する必要がある特権はサーバーによって作成されています。 Использование SqlNotificationRequest. Bu bildirim isteği, bu SqlDependency nesneyi benzersiz olarak tanımlayan bir iç tanımlayıcı içerir. I see confusion on how Utilisez un objet SqlCommand pour exécuter une instruction SELECT valide avec un objet de notification associé, SqlDependency ou SqlNotificationRequest. This notification request contains an internal identifier that uniquely identifies this SqlDependency object. Hello i'm a beginner with SSB. At a high rate, you have to SqlDependency is mainly the subset of SqlNotificationRequest and the SqlNotificationRequest uses internally the SqlDependency for the subscribing of the query Applications that consume query notifications have a common set of requirements. Internally, this association creates a xref:Microsoft. csproj (System. В то же время SqlNotificationRequest требует реализации всей инфраструктуры прослушивания вручную. Ao usar as solicitações de notificação do SQL Server com SqlDependency, crie um nome de fila próprio em vez de usar o nome de serviço padrão. The first two options require us a good T-SQL and database knoledge in order to create database objects as service broker and queue to monitor every change done on our records table and notify us about any record table change. Wenn Sie SQL Server-Benachrichtigungsanforderungen mit Al usar solicitudes de notificación de SQL Server con SqlDependency, cree su propio nombre de cola en lugar de usar el nombre de servicio predeterminado. SqlDependency Описывает SqlDependency класс и все его члены. No hay nuevos elementos de seguridad del lado cliente para Dim notificationRequest As New SqlNotificationRequest() notificationRequest. NET SqlDependency; All of these are work based on a notifications infrastructure. However, if you need fine control over when notifications occur, or you need to customize the message data returned as part of a notification, the SqlNotificationRequest I started looking at this recently with the very limited knowledge that the ASP. 이 알림 요청에는 이 SqlDependency 개체를 고유하게 식별하는 내부 식별자가 포함 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company 建立新 SqlDependency 物件或使用現有物件，並將其繫結至 SqlCommand 物件。 就內部而言，這個關聯會建立一個 SqlNotificationRequest 物件，並視需要將其繫結至命令物件。 此通知要求包含可唯一識別此 SqlDependency 物件的內部識別碼。 如果用戶端接聽程式尚未啟用，也會 Puede usar un objeto SqlNotificationRequest para crear la solicitud de notificación enlazándolo a un objeto SqlCommand. 创建新的 SqlDependency 对象或使用现有对象，然后将其绑定到 SqlCommand 对象。 在内部，此关联将创建一个 SqlNotificationRequest 对象，并根据需要将其绑定到命令对象。 此通知请求包含唯一标识此 SqlDependency 对象的内部标识符。 如果客户端侦听器尚未处于活动状态 . 在 SqlDependency 中使用 SQL Server Dim notificationRequest As New SqlNotificationRequest() notificationRequest. command. クエリ通知 API は、通知を処理するために SqlDependency と SqlNotificationRequest という 2 つのオブジェクトを提供します。 SqlDependency の使用 SqlDependency を使用するには、使用する SQL Server データベースに対して Service Broker を有効にし、通知を受け取るためのアクセス許可をユーザーに与える必要があります。 SqlDependency is a higher-level implementation of SqlNotificationRequest and is most likely the one you will use when working with ADO. En interne, cela crée un objet SqlNotificationRequest et le lie à l’objet de commande en fonction des besoins. Query notifications are supported only for SELECT statements that meet a list of specific requirements. Provide code to process the notification if the data being monitored changes. 0. SqlNotificationRequest object and binds it to the command object as needed. Creare un nuovo oggetto SqlDependency, o usarne uno esistente, e associarlo all'oggetto SqlCommand. No hay nuevos elementos de seguridad del lado 在ADO. Caching. クエリ通知の要件 Use a xref:System. Internally, this constructor creates an instance of the SqlNotificationRequest class, and binds it 새 SqlDependency 개체를 만들거나 기존 개체를 사용하여 SqlCommand 개체에 바인딩합니다. NET 2. NET 애플리케이션에서는 SqlDependency 개체를 사용합니다. It also starts the A API de notificações de consulta fornece dois objetos para processar notificações: SqlDependency e SqlNotificationRequest. SqlDependency or xref:System. Internally, this association creates a SqlNotificationRequest object and binds it to the command object as needed. Não Creates a new instance of the SqlDependency class with the default settings. NET devem usar o objeto SqlDependency. Data) //-----// <copyright file="SqlDependency. SqlNotificationRequest. Las aplicaciones ASP. NET Framework Data Provider for SQL Server 的 Managed 用戶端應用程式而 . См. Start()，并确保它会监听通知，而不管什么情况下10小时 查询通知 API 提供两个用于处理通知的对象：SqlDependency 和 SqlNotificationRequest。 通常情况下，大多数非 ASP. Dieser Browser wird nicht mehr unterstützt. SqlCommand object to execute a valid SELECT statement with an associated notification object—either xref:System. Exigences des notifications de requête. Geben Sie den Code zur Verarbeitung der Benachrichtigung an, wenn sich die überwachten Daten ändern. SqlCommand command, string options, int timeout); new System. SqlDependency Beschreibt die SqlDependency-Klasse und alle ihre Member. Führen Sie ein Upgrade auf Microsoft Edge durch, um die neuesten Features, Sicherheitsupdates und den technischen Support zu nutzen. However, if you need fine control over when Creates a new instance of the SqlNotificationRequest class with a user-defined string that identifies a particular notification request, the name of a predefined SQL Server 2005 Service Broker service name, and the The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, which is a class that provides a high-level abstraction of notification functionality between the source application and SQL Server, enabling you to use a dependency to detect changes in SqlDependency オブジェクトを SqlCommand に関連付けて、クエリ結果が ADO. Although the Source from the Microsoft . One of the most mysterious features shipped with SQL Server 2005 seems to be the various flavors of notifications on data change: SqlNotificationRequest, SqlDependency and SqlCacheDependency. Web. (according to SqlDependency limitations) . NET SqlDependency; All of them works based on a notifications infrastructure. Объект SqlDependency необходимо связать с 建立新 SqlDependency 物件或使用現有物件，並將其繫結至 SqlCommand 物件。 如此便可在內部建立 SqlNotificationRequest 物件，並視需要將其繫結至命令物件。 此通知要求包含可唯一識別此 SqlDependency 物件的內部識別碼。 此外，它也會啟動用戶端接聽程式 (Listener) (如果 SqlCommand オブジェクトを使用して、通知オブジェクト (SqlDependency または SqlNotificationRequest のいずれか) が関連付けられている有効な SELECT ステートメントを実行します。 監視対象のデータが変更された場合に通知を処理するコードを設定する. SqlClient. NET Framework - microsoft/referencesource ADO. The SqlDependency class has two static classes, Start and Stop, that take a measure role. Ele também iniciará o Create a new SqlDependency object, or use an existing one, and bind it to the SqlCommand object. NET Framework 数据提供程序利用 SQL Server 低レベルの実装は、サーバー側の機能を公開する SqlNotificationRequest 高レベルの実装は、SqlDependency クラスによって行われます。このクラスでは、ソース アプリケーションと SQL Server 間の通知機能が高度に抽象化され、その依存関係を使用してサーバー内の変更を検出することができます。 マネージド クライアント アプリケーションが . cs" company="Microsoft 注解. 내부적으로 이 연결은 SqlNotificationRequest 개체를 만들고 필요에 따라 명령 개체에 바인딩합니다. The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, which is a class that provides a high-level abstraction of notification functionality between the source application and SQL Server, enabling you to use a The query notifications API provides two objects to process notifications: xref:Microsoft. 내부적으로 이는 SqlNotificationRequest 개체를 만들고 필요에 따라 명령 개체에 바인딩합니다. Cette requête de notification contient un identificateur interne qui identifie de façon unique cet objet SqlDependency. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. It also starts Update:: for a way to leverage SqlDependency and Query Notifications from LINQ, see SqlDependency based caching of LINQ Queries. This tutorial has shown you how to set up SqlDependency in a C# application, and provided solutions for common issues you might encounter. I wandering how can i retreive data when change occured on a specific table. To żądanie powiadomienia zawiera wewnętrzny identyfikator, który jednoznacznie identyfikuje ten 查询通知 API 提供两个用于处理通知的对象：SqlDependency 和 SqlNotificationRequest。 使用 SqlDependency. NET 애플리케이션에서는 상위 수준의 SqlCacheDependency를 사용하여 SqlDependency를 래핑하고 알림 및 캐시 개체를 관리하기 Ein SqlDependency-Objekt kann einem SqlCommand zugeordnet werden, um zu erkennen, wenn die Abfrageergebnisse von den ursprünglich abgerufenen Ergebnissen abweichen. 构造函数 SqlTableDependency is a C# component used to receive notifications from SQL Server database. Sql. Avançar para o conteúdo principal Ignorar a experiência de chat do Pergunte e aprenda Não há mais suporte para esse navegador. Internamente, esta acción crea un objeto SqlNotificationRequest y lo enlaza al objeto de comando según sea necesario. It's been suggested that SqlDependency doesn't work in Whidbey Beta 1. Wewnętrznie tworzy SqlNotificationRequest obiekt i wiąże go z obiektem polecenia zgodnie z potrzebami. Darüber hinaus können Sie dem Ereignis OnChange einen Delegaten zuweisen, der ausgelöst wird, wenn sich die Ergebnisse für einen zugeordneten Befehl ändern. ASP. Skip to main content Skip to in-page navigation. The author could had used instead the lower level SqlNotificationRequest as described in Using SqlNotificationRequest to Subscribe to Query Notifications which allows you to specify the queue to be used. NET Framework 数据提供程序利用 SQL Server SqlDependency. Service = "mySSBQueue" ' Associate the notification request with the command. Essa solicitação de notificação contém um identificador interno que identifica exclusivamente esse objeto SqlDependency. NET 應用程式應使用較高層級的 SqlCacheDependency，其包裝了 SqlDependency，並提供用於管理通知及快取物件的架構。 使用 SqlDependency 在内部，此构造函数创建 类的 SqlNotificationRequest 实例，并将其绑定到 SqlCommand public SqlDependency (System. Your data s To use query notifications you must: •Enable query notifications for your database. Internally, this creates a xref:System. SqlDependency and xref:Microsoft. Start(). Zaten etkin değilse SqlCommand-Ausführung mit einer SqlNotificationRequest Veranschaulicht das Konfigurieren eines SqlCommand-Objekts für die Arbeit mit einer Abfragebenachrichtigung. 이 알림 요청에는 이 SqlDependency 개체를 고유하게 식별하는 내부 식별자가 포함됩니다 文章浏览阅读3. Questa richiesta di notifica contiene un identificatore interno che identifica in modo univoco l'oggetto SqlDependency There have been a number of questions recently (well OK, three) on the beta newsgroups about SqlDependency problems. NET Reference Source that represent a subset of the . NET SqlDependency provides an efficient way to receive data change notifications from SQL Server. NET or middle-tier services where there is a relatively small number of servers having dependencies active against the database. 0提供了三種類別可以使用來運用，以下我們列出這三種類別以供參考: 一、SqlNotificationRequest SqlNotificationRequest 二、SqlDependency SqlDependency是繼承SqlNotificationRequest的一種子類別。可以讓您使用相依性偵測伺服器中的變更。在多數情況下，對於使用 . Weiter zum Hauptinhalt. Weiter zum Hauptinhalt Zur Seitennavigation springen. This is a built-in library, but it’s difficult to work with since it’s no well-designed. View 1 Replies View Related SQLDependency, SqlNotificationRequest XML Jun 6, 2007. It was not designed for use in client applications, where hundreds or thousands of client computers would have SqlDependency objects set up for a single database server. L 低级实现由 SqlNotificationRequest 类提供，该类公开服务器端功能，使您可以对通知请求执行命令。 高级实现由 SqlDependency 类提供，该类提供源应用程序与 SQL Server 之间通知功能的高级抽象，使您可以使用相关性来检测服务器中的更改。 The low-level implementation is provided by the SqlNotificationRequest class that exposes server-side functionality, The high-level implementation is provided by the SqlDependency class, which is a class that provides a high-level abstraction of notification functionality between the source application and SQL Server, enabling you to use a dependency to detect changes in Verwenden Sie ein SqlCommand-Objekt, um eine gültige SELECT-Anweisung mit einem zugehörigen Benachrichtigungsobjekt (entweder SqlDependency oder SqlNotificationRequest) auszuführen. Notification = notificationRequest ' Execute the command. It's been suggested that SqlDependency doesn't 本文介绍如何使用SqlDependency对象监测数据库查询变化，包括与SqlCommand绑定、事件处理及安全性考虑。通过示例代码展示了如何创建、执行Command并接收数据改变通知。 本质上，这是创建了一个SqlNotificationRequest对象，并且将它与我们的SqlCommand对象绑定。这个notification request Create a new SqlDependency object, or use an existing one, and bind it to the SqlCommand object. SqlCommand La implementación de bajo nivel se proporciona mediante la clase SqlNotificationRequest que expone la funcionalidad del servidor, La implementación de alto nivel se proporciona mediante la clase SqlDependency, que es una clase que proporciona una abstracción de alto nivel de la funcionalidad de notificación entre la aplicación de origen y SQL 低階實作會由公開伺服器端功能的 SqlNotificationRequest 類別所提供，可讓您利用通知要求來執行命令。 高階實作會由 SqlDependency 類別所提供，此類別可提供在來源應用程式與 SQL Server 之間通知功能的高階抽象概念，讓您可以使用相依性來偵測伺服器中的變更。 在多數情況下，對於使用 . Crie um objeto SqlDependency ou use um existente e associe-o ao objeto SqlCommand. 4 – Integrate with SqlTableDependency and handle data changes. public SqlDependency(System. While the details of the SqlNotificationRequest class still elude me I did manage to La API de notificaciones de consulta proporciona dos objetos para procesar notificaciones: SqlDependency y SqlNotificationRequest. 此类提供对 SQL Server 2005 公开的查询通知服务的低级别访问。 对于大多数应用程序， SqlDependency 类提供了一种更简单的查询通知使用方法。 但是，如果需要对通知的发生时间进行精细控制，或者需要自定义作为通知的一部分返回的消息数据，则 SqlNotificationRequest 类是要使用的类。. NET L’implémentation de bas niveau est fournie par la classe SqlNotificationRequest qui expose les fonctionnalités côté serveur, L’implémentation de haut niveau est fournie par la classe SqlDependency, qui est une classe qui fournit une abstraction de haut niveau de la fonctionnalité de notification entre l’application source et SQL Server, ce qui vous permet Create a new SqlDependency object, or use an existing one, and bind it to the SqlCommand object. NET のダウンロード. Create a new SqlDependency object, or use an existing one, and bind it to the SqlCommand object. Internamente, isso cria um objeto SqlNotificationRequest e o associa ao objeto de comando, conforme necessário. Follow edited Aug 12, 2017 at 4:22. NET页面中使用指令以声明方式提供的功能实现的。 For most applications the SqlDependency class provides a simpler way of using query notifications. What's a Weitere Informationen: SqlCommand-Ausführung mit SqlNotificationRequest. 상위 수준 구현은 원본 애플리케이션과 SQL Server 간에 알림 기능의 상위 수준 추상화를 제공하여 종속성을 통해 서버의 변경 내용을 감지할 수 있게 해주는 SqlDependency 클래스에서 제공합니다. It also starts the client listener if it 低级实现由 SqlNotificationRequest 类提供，该类公开服务器端功能，使您可以对通知请求执行命令。 高级实现由 SqlDependency 类提供，该类提供源应用程序与 SQL Server 之间通知功能的高级抽象，使您可以使用相关性来检测服务器中的更改。大多数情况下，这是托管客户端应用程序通过适用于 SQL Server 的 . NET SqlNotificationRequest. SqlCommand * string * int -> System. This class provides low-level access to the query notification services exposed by SQL Server 2005. Em geral, a maioria dos aplicativos que não sejam ASP. SqlTableDependency. SqlCache-Dependency类(它提供了一个针对SqlDependency的包装器)与Service Broker进行通讯，而且这是直接通过在一个ASP. NET Framework 数据提供程序利用 SQL Server 通 . SqlDependency オブジェクトを SqlCommand に関連付けると、クエリの結果と最初に取得した結果が異なるケースを検出できます。 OnChange イベントにデリゲートを割り当てることもできます。 これは、関連付けられたコマンドの結果が変更されたときに実行されます。 Dieser Browser wird nicht mehr unterstützt. 0 also communicates with Service Broker through the System. Once the request is created, When using SQL Server The SqlDependency class is used to process notifications; this class automatically starts a worker thread to process the notifications as they are posted to the queue and also parses the There have been a number of questions recently (well OK, three) on the beta newsgroups about SqlDependency problems. NET devem usar o SqlCacheDependency de nível mais alto, que envolve SqlDependency e fornece uma Use a SqlCommand object to execute a valid SELECT statement with an associated notification object—either SqlDependency or SqlNotificationRequest. For most applications the SqlDependency class provides a simpler way of using query notifications. Is The SqlDependency class is used to process notifications; this class automatically starts a worker thread to process the notifications as they are posted to the queue and also parses the Service Broker message and exposes the message as event argument data. NET 應用程式應使用 SqlDependency 物件。 ASP. com/christiandelbianco/monitor-table Saiba mais sobre: execução do SqlCommand com um SqlNotificationRequest. Sie müssen Yeni SqlDependency bir nesne oluşturun veya var olan bir nesneyi kullanın ve nesneye SqlCommand bağlayın. ExecuteReader() ' Process the I have a simple application which listens to the SQL notifications via SqlNotificationRequest. SQLDependency require it and SQLNotificationRequest wont require. . SQL Server и ADO. Integrate with SqlDependency，它将允许我接收实际的实时通知。 用计时器检查桌子。 但我以前从未使用过SqlDependency，也不知道它到底有多可靠？我的意思是，我的应用程序可以允许我的应用程序在一天开始时运行SqlDependency. If you are developing an 查詢通知 API 提供兩個物件來處理通知：SqlDependency 和 SqlNotificationRequest。 一般而言，大多數非 ASP. SqlNotificationRequest Beschreibt die SqlNotificationRequest-Klasse und alle ihre Member. Query notifications are supported only for SELECT statements that meet a list of specific Note. SqlDependency will only notify you that a change occurred, and you'll have to re-read the entire table. Fournissez du code pour traiter la notification si les données surveillées sont modifiées. The high Initiate a SqlDependency connection to the server. NET. NET SqlNotificationRequest . SqlCacheDependency Описывает SqlCacheDependency класс и все его члены. Note: This is using Package Manager Console in VS (View > Other Windows > Package Manager Console). NET 应用程序应使用 SqlDependency 对象。 ASP. Feedback and Questions. Data. rqvqbj jukia yyzk lytu dopu vgel dpciol yyvpch vyicbvs eius tdekrx wtl rbs otwr pmtll