資料庫連結失敗!

SELECT FI_Bank, FI_1, FI_7, FI_14, FI_21, FI_30, FI_90, FI_180, FI_270, FI_365 FROM ForeignInterest WHERE FI_Currency = 9 ORDER BY FI_Bank

MySql.Data.MySqlClient.MySqlException (0x80004005): Unable to connect to any of the specified MySQL hosts. ---> System.Exception: Exception of type 'System.Exception' was thrown. at MySql.Data.MySqlClient.NativeDriver.Open() at MySql.Data.MySqlClient.NativeDriver.Open() at MySql.Data.MySqlClient.Driver.Create(MySqlConnectionStringBuilder settings) at MySql.Data.MySqlClient.MySqlPool.GetPooledConnection() at MySql.Data.MySqlClient.MySqlPool.GetConnection() at MySql.Data.MySqlClient.MySqlConnection.Open() at ccioo.Data.DB_MySQL.ExecuteReader(String myQuery)