protected virtual void OnApplyingChanges(ApplyingChangesEventArgs args)
{
if (ApplyingChanges != null)
{
ApplyingChanges(this, args);
}
}
//Look for inserted rows in the dataset that have a CustomerType
//of Wholesale and update these rows. With access to the dataset,
//you can write any business logic that your application requires.
//<snippetOCS_CS_Events_BusinessLogic>
private void SampleServerSyncProvider_ApplyingChanges(object sender, ApplyingChangesEventArgs e)
{
DataTable customerDataTable = e.Changes.Tables["Customer"];
for (int i = 0; i < customerDataTable.Rows.Count; i++)
{
if (customerDataTable.Rows[i].RowState == DataRowState.Added &&
customerDataTable.Rows[i]["CustomerType"] == "Wholesale")
{
customerDataTable.Rows[i]["CustomerType"] = "Wholesale (from mobile sales)";
}
}
}
/// <summary>
/// Applies inserts, updates, and deletes for a synchronization group to the server database.
/// </summary>
/// <param name="groupMetadata">A SyncGroupMetadata object that contains metadata about the synchronization group.</param>
/// <param name="dataSet">A DataSet object that contains the changes to be applied to the server database for each table in the synchronization group.</param>
/// <param name="syncSession">A SyncSession object that contains synchronization session variables, such as the ID of the client that is synchronizing.</param>
/// <returns>A SyncContext object that contains synchronization data and metadata.</returns>
/// #UPLOAD 1
public override SyncContext ApplyChanges(SyncGroupMetadata groupMetadata, DataSet dataSet, SyncSession syncSession)
{
if (groupMetadata == null)
{
throw new ArgumentNullException("groupMetadata");
}
if (syncSession == null)
{
throw new ArgumentNullException("syncSession");
}
SyncContext syncContext = new SyncContext();
groupMetadata = InitializeMetadata(groupMetadata, dataSet, syncContext);
// connect to database
Connection.Open();
// create transaction
ApplyingChangesEventArgs applyingArgs = new ApplyingChangesEventArgs(groupMetadata, dataSet, syncSession, syncContext, Connection, null);
OnApplyingChanges(applyingArgs);
ApplyChangesInternal(groupMetadata, dataSet, syncSession, syncContext);
// commit transaction
ChangesAppliedEventArgs appliedArgs = new ChangesAppliedEventArgs(groupMetadata, syncSession, syncContext, Connection, null);
OnChangesApplied(appliedArgs);
// disconnect from database
Connection.Close();
return(syncContext);
}
protected override void OnApplyingChanges(ApplyingChangesEventArgs value)
{
Console.Write("on applying changes on client..");
base.OnApplyingChanges(value);
}
