SqlSyncProvider Class

Represents a synchronization provider that communicates with a SQL Server database and shields other Sync Framework components from the specific implementation of the database.

This class is not CLS-compliant.  

Namespace: Microsoft.Synchronization.Data.SqlServer
Assembly: Microsoft.Synchronization.Data.SqlServer (in microsoft.synchronization.data.sqlserver.dll)

Syntax

'Declaration
<CLSCompliantAttribute(False)> _
Public Class SqlSyncProvider
    Inherits RelationalSyncProvider
'Usage
Dim instance As SqlSyncProvider

[CLSCompliantAttribute(false)] 
public class SqlSyncProvider : RelationalSyncProvider

[CLSCompliantAttribute(false)] 
public ref class SqlSyncProvider : public RelationalSyncProvider

/** @attribute CLSCompliantAttribute(false) */ 
public class SqlSyncProvider extends RelationalSyncProvider

CLSCompliantAttribute(false) 
public class SqlSyncProvider extends RelationalSyncProvider

Remarks

The principal activities of a synchronization provider are as follows:

• Stores information about tables on the peer that are enabled for synchronization.

• Enables applications to retrieve changes that occurred in the database since the last synchronization.

• Applies incremental changes to the database.

• Detects conflicting changes.

Example

The following code example instantiates providers for three different synchronization sessions: between the server and the SQL Server client; between the SQL Server client and one of the SQL Server Compact clients; and between the server and the other SQL Server Compact client. One of the SQL Server Compact clients is initialized by using a database snapshot. To view this code in the context of a complete example, see How to: Configure and Execute Collaborative Synchronization (SQL Server).

SampleSyncOrchestrator syncOrchestrator;
SyncOperationStatistics syncStats;

// Data is downloaded from the server to the SQL Server client.
syncOrchestrator = new SampleSyncOrchestrator(
    new SqlSyncProvider("filtered_customer", clientSqlConn, null, "Sync"),
    new SqlSyncProvider("filtered_customer", serverConn, null, "Sync")
    );
syncStats = syncOrchestrator.Synchronize();
syncOrchestrator.DisplayStats(syncStats, "initial");

// Data is downloaded from the SQL Server client to the 
// first SQL Server Compact client.
syncOrchestrator = new SampleSyncOrchestrator(
    new SqlCeSyncProvider("filtered_customer", clientSqlCe1Conn, "Sync"),
    new SqlSyncProvider("filtered_customer", clientSqlConn, null, "Sync")
    );
syncStats = syncOrchestrator.Synchronize();
syncOrchestrator.DisplayStats(syncStats, "initial");

// Create a snapshot from the SQL Server Compact database, which will be used to
// initialize a second Compact database. Again, this database could be provisioned
// by retrieving scope information from another database, but we want to 
// demonstrate the use of snapshots, which provide a convenient deployment
// mechanism for Compact databases.
SqlCeSyncStoreSnapshotInitialization syncStoreSnapshot = new SqlCeSyncStoreSnapshotInitialization("Sync");
syncStoreSnapshot.GenerateSnapshot(clientSqlCe1Conn, "SyncSampleClient2.sdf");

// The new SQL Server Compact client synchronizes with the server, but
// no data is downloaded because the snapshot already contains 
// all of the data from the first Compact database.
syncOrchestrator = new SampleSyncOrchestrator(
    new SqlSyncProvider("filtered_customer", serverConn, null, "Sync"),
    new SqlCeSyncProvider("filtered_customer", clientSqlCe2Conn, "Sync")
    );
syncStats = syncOrchestrator.Synchronize();
syncOrchestrator.DisplayStats(syncStats, "initial");

Dim syncOrchestrator As SampleSyncOrchestrator
Dim syncStats As SyncOperationStatistics

' Data is downloaded from the server to the SQL Server client. 
syncOrchestrator = New SampleSyncOrchestrator( _
    New SqlSyncProvider("filtered_customer", clientSqlConn, Nothing, "Sync"), _
    New SqlSyncProvider("filtered_customer", serverConn, Nothing, "Sync"))
syncStats = syncOrchestrator.Synchronize()
syncOrchestrator.DisplayStats(syncStats, "initial")

' Data is downloaded from the SQL Server client to the 
' first SQL Server Compact client. 
syncOrchestrator = New SampleSyncOrchestrator( _
    New SqlCeSyncProvider("filtered_customer", clientSqlCe1Conn, "Sync"), _
    New SqlSyncProvider("filtered_customer", clientSqlConn, Nothing, "Sync"))
syncStats = syncOrchestrator.Synchronize()
syncOrchestrator.DisplayStats(syncStats, "initial")

' Create a snapshot from the SQL Server Compact database, which will be used to 
' initialize a second Compact database. Again, this database could be provisioned 
' by retrieving scope information from another database, but we want to 
' demonstrate the use of snapshots, which provide a convenient deployment 
' mechanism for Compact databases. 
Dim syncStoreSnapshot As New SqlCeSyncStoreSnapshotInitialization("Sync")
syncStoreSnapshot.GenerateSnapshot(clientSqlCe1Conn, "SyncSampleClient2.sdf")

' The new SQL Server Compact client synchronizes with the server, but 
' no data is downloaded because the snapshot already contains 
' all of the data from the first Compact database. 
syncOrchestrator = New SampleSyncOrchestrator( _
    New SqlSyncProvider("filtered_customer", serverConn, Nothing, "Sync"), _
    New SqlCeSyncProvider("filtered_customer", clientSqlCe2Conn, "Sync"))
syncStats = syncOrchestrator.Synchronize()
syncOrchestrator.DisplayStats(syncStats, "initial")

Inheritance Hierarchy

System.Object
   Microsoft.Synchronization.SyncProvider
     Microsoft.Synchronization.KnowledgeSyncProvider
       Microsoft.Synchronization.Data.RelationalSyncProvider
        Microsoft.Synchronization.Data.SqlServer.SqlSyncProvider

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

See Also

Reference

SqlSyncProvider Members
Microsoft.Synchronization.Data.SqlServer Namespace