C＃如何監視數據庫表的更改

Question

如何在C＃中監視對數據庫表的更改？ 我正在使用SQL Server 2008，並且要在更改表后同步數據。

Answer 1

如果我對您的理解正確，那么您想創建一個SqlDependency ；

void Initialization()
{
    // Create a dependency connection.
    SqlDependency.Start(connectionString, queueName);
}

void SomeMethod()
{
  // Assume connection is an open SqlConnection.

  // Create a new SqlCommand object.
  SqlCommand command=new SqlCommand(
    "SELECT ShipperID, CompanyName, Phone FROM dbo.Shippers", 
    connection);

  // Create a dependency and associate it with the SqlCommand.
  SqlDependency dependency=new SqlDependency(command);
  // Maintain the refence in a class member.

  // Subscribe to the SqlDependency event.
  dependency.OnChange+=new OnChangeEventHandler(OnDependencyChange);

  // Execute the command.
  command.ExecuteReader();
  // Process the DataReader.
}

// Handler method
void OnDependencyChange(object sender, 
   SqlNotificationsEventArgs e )
{
  // Handle the event (for example, invalidate this cache entry).
}

void Termination()
{
    // Release the dependency
    SqlDependency.Stop(connectionString, queueName);
}

Answer 2

檢查Microsoft Sync Framework 。