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TransSubscription Constructor ()

 

Creates a new instance of the TransSubscription class.

Namespace:   Microsoft.SqlServer.Replication
Assembly:  Microsoft.SqlServer.Rmo (in Microsoft.SqlServer.Rmo.dll)

public TransSubscription()

The default constructor initializes any fields to their default values.

// Define the Publisher, publication, and databases.
string publicationName = "AdvWorksProductTran";
string publisherName = publisherInstance;
string subscriberName = subscriberInstance;
string subscriptionDbName = "AdventureWorks2012Replica";
string publicationDbName = "AdventureWorks2012";

//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();
}
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