System.Data.OleDb.OleDbConnection Maconnect = new System.Data.OleDb.OleDbConnection ("Provider=OraOLEDB.Oracle;Data Source=MyOracleDB;User Id=Username;Password=asdasd;"); try { Maconnect.Open(); } catch(Exception xcp) { MessageBox.Show(xcp.Message.ToString()); } finally { Maconnect.Close(); }