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Steps to use SQL snapshot controls and SQL distribution controls in Visual C # .NET
SUMMARY This step-by-step guide demonstrates how to use SQL snapshot controls and SQL distribution controls in Microsoft Visual C # .NET.
You can use the SQL Server 2000 Copy ActiveX control to embed the replication function in the custom application.
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Prerequisites Put the sample code into the Microsoft Visual C # .NET project, follow these steps:
Make sure the publishing server, distribution server, and subscriber configuration is correct, and running is SQL Server 2000. Create a snapshot release and name it Samplesnapshotpublication. The publishing database is Northwind. After the release is created, check the published property of the release. Click the Subscription Options tab. Click to select the use of the distribution agent and snapshot files that are independent from this database and the snapshot files that are always available immediately, and the new subscription check box can be initialized. Click OK to close the Publish Properties dialog.
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Steps to program the SQL snapshot control and SQL distribution control in Visual C # .NET This section provides a snapshot of sample code to generate a snapshot using the SQL snapshot control. Then, the SQL distribution control creates a subscription database, named
Northwind_replica. Make sure not named before running sample code
Northwind_replica's database. SQL distribution control will be
A request subscription is created in the Northwind_Replica database and apply this snapshot on the subscriber.
Add two references to your Visual C # .NET project:
Microsoft SQL Distribution Controls 8.0. Microsoft SQL Distribution Control 8.0 COM object. Then, insert the following code in the C # class file of the project:
Using system;
Using system.Runtime.InteropServices;
Using SqlinitXLIB;
Using sqldistxlib;
Namespace SQLREPL
{
// this class demonstrates Use of the sql server snapshot and distribution agents replication controls.
Class SnapshotApp
{
/ * Prior to Running this code, You Must Set Up Replication As Follows:
//
// create a snapshot publication named "Samplesnapshotpublic" and configure it to allow pl
// Subscriptions.
//
// You Must Also Set The Following Subscription Options for the publication:
// -Use a distribution agent this is independent of other publications from this database.
// -Snapshot Files Are ALWAYS AVAILABLE TO INITIALIZE New Subscriptions.
//
// this code first generates the snapshot by using the sqlsnapshotclass object. The subscription database
// and press subscription. next, the snapshot is applied at the subscriber by using // The sqldistributionclass object.
//
// set references to the Following COM DLL Files:
// -Microsoft SQL Snapshot Control 8.0
// -Microsoft SQL Distribution Control 8.0
* /
[Stathread]
Static void main (string [] args)
{
String StrPublisher, STRDISTRIBUTOR, STRSUBSCRIBER, STRPUBLISHERDATABASE, STRSUBSCRIBLITABASE, STRPUBLICATION
StrPublisher = "Publisher"; // change to the name of your public
STRDISTRIBUTOR = "distributor"; // change to the name of Your Distributor
strsubscriber = "Subscriber"; // Change to the name of your subscriber
Strpublication = "samplesnapshotpublic";
StrpublisherDatabase = "northwind";
strsubscriberDatabase = "northwind_replica";
Sqlsnapshotclass ospnap = new sqlsnapshotclass ();
// set up the publicisher.
Osnap.publisher = strpublisher;
Osnap.publishersecuritymode = SQLINITXLIB.SECURITY_TYPE.NT_AUTHENTICATION
Osnap.publisherdatabase = strpublisherdatabase;
Osnap.publication = STRPUBLICATION;
// set up the distributor.
Osnap.distributor = strdistributor;
Osnap.distributorsecurityMode = SQLINITXLIB.SECURITY_TYPE.NT_AUTHENTICATION
// generate the snapshot.
Try
{
Console.writeline ("Generating Snapshot ...");
Osnap.initialize ();
Osnap.run ();
Osnap.Terminate ();
"" Snapshot generated. ");
}
Catch (Exception E)
{
Console.writeline (E.STACKTRACE);
Console.writeLine (E.MESSAGE);
}
// Now That The Snapshot IS CREATED, Use The Distribution Agent Control To Apply The Snapshot At The Subscriber.
SqldistributionClass Odist = New SqldistributionClass (); // set up the public.
Odist.publisher = strpublisher;
Odist.publishersecuritymode = sqldistxlib.security_type.nt_authentication;
Odist.publisherdatabase = strpublisherdatabase;
Odist.publication = strpublication;
// set up the distributor.
Odist.distributor = strdistributor;
Odist.distributorsecurityMode = SqlDistxlib.security_type.nt_authentication;
// set up the subscriber.
Odist.subscriber = strsubscriber;
Odist.subscriberDatabase = strsubscriberdatabase;
Odist.subscriberSecurityMode = SqlDistxlib.security_type.nt_authentication;
// set up the subscription.
Odist.subscriptionType = SqlDistXlib.subscription_type.pull;
Odist.synchronizationType = Sqldistxlib.synchronization_type.automatic;
Odist.subscriptionname = "pullsnapshotsubscription";
// Create The Database and Subscription.
Odist.addsubscription (SqlDistXlib.dbaddoption.create_database, sqldistxlib.subscription_host.none);
// Synchronize the subsis.
Try
{
Console.WriteLine ("Running Distribution Agent ...");
Odist.initialize ();
Odist.run ();
Odist.terminate ();
Console.writeline ("Distribution Agent Completed.");
}
Catch (Exception E)
{
Console.writeline (E.STACKTRACE);
Console.writeLine (E.MESSAGE);
}
}
}
}
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Reference To get sample code written using the previous version of Microsoft Visual Basic and Microsoft Visual C , please visit the following URL:
Using SQL Merge and SQL Distribution Controls in a Custom Visual Basic Application (using SQL merge controls and SQL distribution controls in custom Visual Basic applications)
Using SQL Merge and SQL Distribution Controls In A Custom Visual C Application (SQL Merge Controls and SQL Distribution Controls in Custom Visual C ) Back to the TOP
The information in this article applies to:
Microsoft SQL Server 2000 (All Editions) Microsoft Visual C # .NET (2002)
Recent Updated: 2004-3-25 (2.1) Keywords: KbhowTomaster KB319649 KBAUDDEVELOPER
