C#连接Oracle数据库：提示无法解析指定的连接标示符

[qingxiao741]

我的代码：
string conn = "Data Source=(STALENT =(DESCRIPTION =(ADDRESS_LIST =(ADDRESS = (PROTOCOL = TCP)(HOST =localhost)(PORT = 1521)))(CONNECT_DATA =(SID = Stalent)));"
+ "User Id=system;Password=talent;";
OracleConnection connection = new OracleConnection(conn);
connection.Open();
string sql = "select count(*) from aq$_queuest";
OracleCommand comm = new OracleCommand(sql, connection);
int count = (int)comm.ExecuteScalar();
connection.Close();
MessageBox.Show(count.ToString());

[qingxiao741]

怎么还没有回复的，我等不及了，快帮忙看看吧