Sync Framework how to Determine Rows that has been Synchronized to SQL SERVER Database

I want to filter the SQL Compact Database to get rows that as been s开发者_如何学运维ynchronized to the SQL SEVER Using sync framework can any one give me an hint on how to get this done. I will prefer a sample code in VB.NET

Thanks

I found a way to determine the pending rows (rows that aren't synchronized yet):

Dim provider = DirectCast(SyncAgent.LocalProvider, SqlCeClientSyncProvider)
Dim testBeforeSync = provider.GetChanges("tblBarCodeScanning")
'contains all the pending rows, all the other rows are already synchronized and can be deleted!
Dim table = testBeforeSync.DataSet.Tables(0)