private void button1_Click(object sender, EventArgs e)
{
       DbNetData SourceConnection = new DbNetData("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=../data/source.mdb");
       DbNetData TargetConnection = new DbNetData("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=../data/target.mdb");
       using (DbNetCopy DbCopy = new DbNetCopy(SourceConnection, TargetConnection))
       {
           DbCopy.EmptyTargetDatabase();
           DbCopy.OnBeforeRowCopied += ReviewDataToCopy;
           DbCopy.CopyTable("customers");
           DbCopy.CopyTable("products");
       }
}

private void ReviewDataToCopy(DbNetCopy DbCopy, ListDictionary Params)
{
       switch (DbCopy.CurrentTargetTableName.ToLower())
       {
           case "customers":
               switch (Params["Country"].ToString())
               {
                   // Set the Region to EU for european countries
                   case "UK":
                   case "France":
                   case "Germany":
                   case "Spain":
                       Params["Region"] = "EU";
                       break;
               }
               break;
           case "products":
               // Do not copy discontinued products
               if (( bool)Params["Discontinued"] )
                   Params.Clear();
               break;
       }
   }