public TimeSpan Start()
{
var s = new Stopwatch();
s.Start();
foreach (var t in _tablesToCopy)
{
var rows = _databaseIO.GetRows(t);
StartingWith?.Invoke(this, new Tuple <string, long>(t.FullTableName, rows));
_databaseIO.TimeOut = Timeout;
_databaseIO.CopyTable(t);
//System.Threading.Thread.Sleep(5000); // simulate long operation
DoneWith?.Invoke(this, t.FullTableName);
}
DoneWith?.Invoke(this, null);
s.Stop();
return(s.Elapsed);
}