private string CheckConn() { if (cb_servertype.SelectedValue.ToString() == FbServerType.Embedded.ToString()) { _database.ServerType = FbServerType.Embedded; } else { _database.ServerType = FbServerType.Default; } _database.ServerIP = tb_ip.Text; _database.PDataBase = tb_pbase_path.Text; _database.FDataBase = tb_fbase_path.Text; string warnings = _database.CheckConnection(); return(warnings); }