Publication.HasSubscription Properti
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Mendapatkan apakah publikasi memiliki satu atau beberapa langganan.
public:
property bool HasSubscription { bool get(); };
public bool HasSubscription { get; }
member this.HasSubscription : bool
Public ReadOnly Property HasSubscription As Boolean
Nilai Properti
Nilai Boolean. Jika true
, publikasi memiliki setidaknya satu langganan yang sudah ada, dan jika false
, publikasi tidak memiliki langganan.
Contoh
// Define the Publisher, publication database,
// and publication names.
string publisherName = publisherInstance;
string publicationName = "AdvWorksProductTran";
string publicationDbName = "AdventureWorks2012";
TransPublication publication;
ReplicationDatabase publicationDb;
// Create a connection to the Publisher
// using Windows Authentication.
ServerConnection conn = new ServerConnection(publisherName);
try
{
conn.Connect();
// Set the required properties for the transactional publication.
publication = new TransPublication();
publication.ConnectionContext = conn;
publication.Name = publicationName;
publication.DatabaseName = publicationDbName;
// Delete the publication, if it exists and has no subscriptions.
if (publication.LoadProperties() && !publication.HasSubscription)
{
publication.Remove();
}
else
{
// Do something here if the publication does not exist
// or has subscriptions.
throw new ApplicationException(String.Format(
"The publication {0} could not be deleted. " +
"Ensure that the publication exists and that all " +
"subscriptions have been deleted.",
publicationName, publisherName));
}
// If no other transactional publications exists,
// disable publishing on the database.
publicationDb = new ReplicationDatabase(publicationDbName, conn);
if (publicationDb.LoadProperties())
{
if (publicationDb.TransPublications.Count == 0)
{
publicationDb.EnabledTransPublishing = false;
}
}
else
{
// Do something here if the database does not exist.
throw new ApplicationException(String.Format(
"The database {0} does not exist on {1}.",
publicationDbName, publisherName));
}
}
catch (Exception ex)
{
// Implement application error handling here.
throw new ApplicationException(String.Format(
"The publication {0} could not be deleted.",
publicationName), ex);
}
finally
{
conn.Disconnect();
}
' Define the Publisher, publication database,
' and publication names.
Dim publisherName As String = publisherInstance
Dim publicationName As String = "AdvWorksProductTran"
Dim publicationDbName As String = "AdventureWorks2012"
Dim publication As TransPublication
Dim publicationDb As ReplicationDatabase
' Create a connection to the Publisher
' using Windows Authentication.
Dim conn As ServerConnection = New ServerConnection(publisherName)
Try
conn.Connect()
' Set the required properties for the transactional publication.
publication = New TransPublication()
publication.ConnectionContext = conn
publication.Name = publicationName
publication.DatabaseName = publicationDbName
' Delete the publication, if it exists and has no subscriptions.
If publication.LoadProperties() And Not publication.HasSubscription Then
publication.Remove()
Else
' Do something here if the publication does not exist
' or has subscriptions.
Throw New ApplicationException(String.Format( _
"The publication {0} could not be deleted. " + _
"Ensure that the publication exists and that all " + _
"subscriptions have been deleted.", _
publicationName, publisherName))
End If
' If no other transactional publications exists,
' disable publishing on the database.
publicationDb = New ReplicationDatabase(publicationDbName, conn)
If publicationDb.LoadProperties() Then
If publicationDb.TransPublications.Count = 0 Then
publicationDb.EnabledTransPublishing = False
End If
Else
' Do something here if the database does not exist.
Throw New ApplicationException(String.Format( _
"The database {0} does not exist on {1}.", _
publicationDbName, publisherName))
End If
Catch ex As Exception
' Implement application error handling here.
Throw New ApplicationException(String.Format( _
"The publication {0} could not be deleted.", _
publicationName), ex)
Finally
conn.Disconnect()
End Try
Keterangan
HasSubscription Properti hanya dapat diambil oleh anggota db_owner
peran database tetap dan replmonitor
pada database publikasi.