如何创建推送订阅(RMO 编程)

您可以使用复制管理对象 (RMO) 以编程的方式创建推送订阅。 用于创建推送订阅的 RMO 类取决于对其创建订阅的发布的类型。

安全说明安全说明

如果可能,请在运行时提示用户输入安全凭据。 如果必须存储凭据,请使用 Microsoft Windows .NET Framework 提供的 Cryptographic Services(加密服务)。

创建快照或事务发布的推送订阅

  1. 使用 ServerConnection 类创建与发布服务器的连接。

  2. 使用步骤 1 中的发布服务器连接创建 TransPublication 类的实例。指定 NameDatabaseNameConnectionContext

  3. 调用 LoadProperties 方法。 如果该方法返回 false,则表示步骤 2 中指定的属性不正确,或者服务器中不存在发布。

  4. Attributes 属性和 AllowPush 之间执行逻辑位与(在 Visual C# 中为 &,在 Visual Basic 中为 And)运算。 如果结果为 None,则将 Attributes 设置为 AttributesAllowPush 之间的逻辑位或(在 Visual C# 中为 |,在 Visual Basic 为 Or)的结果。 然后,调用 CommitPropertyChanges 以启用推送订阅。

  5. 如果订阅数据库不存在,则使用 Database 类创建该数据库。 有关详细信息,请参阅创建、更改和删除数据库

  6. 创建 TransSubscription 类的实例。

  7. 设置下列订阅属性:

  8. 调用 Create 方法。

    安全说明安全说明

    在具有远程分发服务器的发布服务器上创建推送订阅时,为所有属性(包括 SynchronizationAgentProcessSecurity)提供的值都将作为纯文本发送到该分发服务器。 在调用 Create 方法之前,应该对发布服务器与其远程分发服务器之间的连接进行加密。 有关详细信息,请参阅加密与 SQL Server 的连接

创建合并发布的推送订阅

  1. 使用 ServerConnection 类创建与发布服务器的连接。

  2. 使用步骤 1 中的发布服务器连接创建 MergePublication 类的实例。指定 NameDatabaseNameConnectionContext

  3. 调用 LoadProperties 方法。 如果该方法返回 false,则表示步骤 2 中指定的属性不正确,或者服务器中不存在发布。

  4. Attributes 属性和 AllowPush 之间执行逻辑位与(在 Visual C# 中为 &,在 Visual Basic 中为 And)运算。 如果结果为 None,则将 Attributes 设置为 AttributesAllowPush 之间的逻辑位或(在 Visual C# 中为 |,在 Visual Basic 为 Or)的结果。 然后,调用 CommitPropertyChanges 以启用推送订阅。

  5. 如果订阅数据库不存在,则使用 Database 类创建该数据库。 有关详细信息,请参阅创建、更改和删除数据库

  6. 创建 MergeSubscription 类的实例。

  7. 设置下列订阅属性:

  8. 调用 Create 方法。

    安全说明安全说明

    在具有远程分发服务器的发布服务器上创建推送订阅时,为所有属性(包括 SynchronizationAgentProcessSecurity)提供的值都将作为纯文本发送到该分发服务器。 在调用 Create 方法之前,应该对发布服务器与其远程分发服务器之间的连接进行加密。 有关详细信息,请参阅加密与 SQL Server 的连接

示例

该示例创建事务发布的新推送订阅。 用于运行分发代理作业的 Windows 帐户凭据在运行时通过。

            // Define the Publisher, publication, and databases.
            string publicationName = "AdvWorksProductTran";
            string publisherName = publisherInstance;
            string subscriberName = subscriberInstance;
            string subscriptionDbName = "AdventureWorks2008R2Replica";
            string publicationDbName = "AdventureWorks2008R2";

            //Create a connection to the Publisher.
            ServerConnection conn = new ServerConnection(subscriberName);

            // Create the objects that we need.
            TransPublication publication;
            TransSubscription subscription;

            try
            {
                // Connect to the Publisher.
                conn.Connect();

                // Ensure that the publication exists and that 
                // it supports push subscriptions.
                publication = new TransPublication();
                publication.Name = publicationName;
                publication.DatabaseName = publicationDbName;
                publication.ConnectionContext = conn;

                if (publication.IsExistingObject)
                {
                    if ((publication.Attributes & PublicationAttributes.AllowPush) == 0)
                    {
                        publication.Attributes |= PublicationAttributes.AllowPush;
                    }

                    // Define the push subscription.
                    subscription = new TransSubscription();
                    subscription.ConnectionContext = conn;
                    subscription.SubscriberName = subscriberName;
                    subscription.PublicationName = publicationName;
                    subscription.DatabaseName = publicationDbName;
                    subscription.SubscriptionDBName = subscriptionDbName;

                    // Specify the Windows login credentials for the Distribution Agent job.
                    subscription.SynchronizationAgentProcessSecurity.Login = winLogin;
                    subscription.SynchronizationAgentProcessSecurity.Password = winPassword;

                    // By default, subscriptions to transactional publications are synchronized 
                    // continuously, but in this case we only want to synchronize on demand.
                    subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.OnDemand;

                    // Create the push subscription.
                    subscription.Create();
                }
                else
                {
                    // Do something here if the publication does not exist.
                    throw new ApplicationException(String.Format(
                        "The publication '{0}' does not exist on {1}.",
                        publicationName, publisherName));
                }
            }
            catch (Exception ex)
            {
                // Implement the appropriate error handling here.
                throw new ApplicationException(String.Format(
                    "The subscription to {0} could not be created.", publicationName), ex);
            }
            finally
            {
                conn.Disconnect();
            }
' Define the Publisher, publication, and databases.
Dim publicationName As String = "AdvWorksProductTran"
Dim publisherName As String = publisherInstance
Dim subscriberName As String = subscriberInstance
Dim subscriptionDbName As String = "AdventureWorks2008R2Replica"
Dim publicationDbName As String = "AdventureWorks2008R2"

'Create a connection to the Publisher.
Dim conn As ServerConnection = New ServerConnection(subscriberName)

' Create the objects that we need.
Dim publication As TransPublication
Dim subscription As TransSubscription

Try
    ' Connect to the Publisher.
    conn.Connect()

    ' Ensure that the publication exists and that 
    ' it supports push subscriptions.
    publication = New TransPublication()
    publication.Name = publicationName
    publication.DatabaseName = publicationDbName
    publication.ConnectionContext = conn

    If publication.IsExistingObject Then
        If (publication.Attributes And PublicationAttributes.AllowPush) = 0 Then
            publication.Attributes = publication.Attributes _
            Or PublicationAttributes.AllowPush
        End If

        ' Define the push subscription.
        subscription = New TransSubscription()
        subscription.ConnectionContext = conn
        subscription.SubscriberName = subscriberName
        subscription.PublicationName = publicationName
        subscription.DatabaseName = publicationDbName
        subscription.SubscriptionDBName = subscriptionDbName

        ' Specify the Windows login credentials for the Distribution Agent job.
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword

        ' By default, subscriptions to transactional publications are synchronized 
        ' continuously, but in this case we only want to synchronize on demand.
        subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.OnDemand

        ' Create the push subscription.
        subscription.Create()
    Else
        ' Do something here if the publication does not exist.
        Throw New ApplicationException(String.Format( _
         "The publication '{0}' does not exist on {1}.", _
         publicationName, publisherName))
    End If

Catch ex As Exception
    ' Implement the appropriate error handling here.
    Throw New ApplicationException(String.Format( _
        "The subscription to {0} could not be created.", publicationName), ex)
Finally
    conn.Disconnect()
End Try

该示例创建合并发布的新推送订阅。 用于运行合并代理作业的 Windows 帐户凭据在运行时通过。

           // Define the Publisher, publication, and databases.
            string publicationName = "AdvWorksSalesOrdersMerge";
            string publisherName = publisherInstance;
            string subscriberName = subscriberInstance;
            string subscriptionDbName = "AdventureWorks2008R2Replica";
            string publicationDbName = "AdventureWorks2008R2";
            string hostname = @"adventure-works\garrett1";

            //Create a connection to the Publisher.
            ServerConnection conn = new ServerConnection(subscriberName);

            // Create the objects that we need.
            MergePublication publication;
            MergeSubscription subscription;

            try
            {
                // Connect to the Publisher.
                conn.Connect();

                // Ensure that the publication exists and that 
                // it supports push subscriptions.
                publication = new MergePublication();
                publication.Name = publicationName;
                publication.DatabaseName = publicationDbName;
                publication.ConnectionContext = conn;

                if (publication.IsExistingObject)
                {
                    if ((publication.Attributes & PublicationAttributes.AllowPush) == 0)
                    {
                        publication.Attributes |= PublicationAttributes.AllowPush;
                    }

                    // Define the push subscription.
                    subscription = new MergeSubscription();
                    subscription.ConnectionContext = conn;
                    subscription.SubscriberName = subscriberName;
                    subscription.PublicationName = publicationName;
                    subscription.DatabaseName = publicationDbName;
                    subscription.SubscriptionDBName = subscriptionDbName;
                    subscription.HostName = hostname;

                    // Set a schedule to synchronize the subscription every 2 hours
                    // during weekdays from 6am to 10pm.
                    subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.Weekly;
                    subscription.AgentSchedule.FrequencyInterval = Convert.ToInt32(0x003E);
                    subscription.AgentSchedule.FrequencyRecurrenceFactor = 1;
                    subscription.AgentSchedule.FrequencySubDay = ScheduleFrequencySubDay.Hour;
                    subscription.AgentSchedule.FrequencySubDayInterval = 2;
                    subscription.AgentSchedule.ActiveStartDate = 20051108;
                    subscription.AgentSchedule.ActiveEndDate = 20071231;
                    subscription.AgentSchedule.ActiveStartTime = 060000;
                    subscription.AgentSchedule.ActiveEndTime = 100000;

                    // Specify the Windows login credentials for the Merge Agent job.
                    subscription.SynchronizationAgentProcessSecurity.Login = winLogin;
                    subscription.SynchronizationAgentProcessSecurity.Password = winPassword;

                    // Create the push subscription.
                    subscription.Create();
                }
                else
                {
                    // Do something here if the publication does not exist.
                    throw new ApplicationException(String.Format(
                        "The publication '{0}' does not exist on {1}.",
                        publicationName, publisherName));
                }
            }
            catch (Exception ex)
            {
                // Implement the appropriate error handling here.
                throw new ApplicationException(String.Format(
                    "The subscription to {0} could not be created.", publicationName), ex);
            }
            finally
            {
                conn.Disconnect();
            }
' Define the Publisher, publication, and databases.
Dim publicationName As String = "AdvWorksSalesOrdersMerge"
Dim publisherName As String = publisherInstance
Dim subscriberName As String = subscriberInstance
Dim subscriptionDbName As String = "AdventureWorks2008R2Replica"
Dim publicationDbName As String = "AdventureWorks2008R2"
Dim hostname As String = "adventure-works\garrett1"

'Create a connection to the Publisher.
Dim conn As ServerConnection = New ServerConnection(subscriberName)

' Create the objects that we need.
Dim publication As MergePublication
Dim subscription As MergeSubscription

Try
    ' Connect to the Publisher.
    conn.Connect()

    ' Ensure that the publication exists and that 
    ' it supports push subscriptions.
    publication = New MergePublication()
    publication.Name = publicationName
    publication.DatabaseName = publicationDbName
    publication.ConnectionContext = conn

    If publication.IsExistingObject Then
        If (publication.Attributes And PublicationAttributes.AllowPush) = 0 Then
            publication.Attributes = publication.Attributes _
            Or PublicationAttributes.AllowPush
        End If

        ' Define the push subscription.
        subscription = New MergeSubscription()
        subscription.ConnectionContext = conn
        subscription.SubscriberName = subscriberName
        subscription.PublicationName = publicationName
        subscription.DatabaseName = publicationDbName
        subscription.SubscriptionDBName = subscriptionDbName
        subscription.HostName = hostname

        ' Set a schedule to synchronize the subscription every 2 hours
        ' during weekdays from 6am to 10pm.
        subscription.AgentSchedule.FrequencyType = ScheduleFrequencyType.Weekly
        subscription.AgentSchedule.FrequencyInterval = Convert.ToInt32("0x003E", 16)
        subscription.AgentSchedule.FrequencyRecurrenceFactor = 1
        subscription.AgentSchedule.FrequencySubDay = ScheduleFrequencySubDay.Hour
        subscription.AgentSchedule.FrequencySubDayInterval = 2
        subscription.AgentSchedule.ActiveStartDate = 20051108
        subscription.AgentSchedule.ActiveEndDate = 20071231
        subscription.AgentSchedule.ActiveStartTime = 60000
        subscription.AgentSchedule.ActiveEndTime = 100000

        ' Specify the Windows login credentials for the Merge Agent job.
        subscription.SynchronizationAgentProcessSecurity.Login = winLogin
        subscription.SynchronizationAgentProcessSecurity.Password = winPassword

        ' Create the push subscription.
        subscription.Create()
    Else

        ' Do something here if the publication does not exist.
        Throw New ApplicationException(String.Format( _
         "The publication '{0}' does not exist on {1}.", _
         publicationName, publisherName))
    End If
Catch ex As Exception
    ' Implement the appropriate error handling here.
    Throw New ApplicationException(String.Format( _
    "The subscription to {0} could not be created.", publicationName), ex)
Finally
    conn.Disconnect()
End Try