在本機上用模擬器運行程序時發生錯誤報“路徑無效。請檢查數據庫的目錄”。 symbol.sdf在程序的目錄下 打開數據庫的方法如下： public void opensql()??????? {??????????? //SqlCommand cm = new System.Data.SqlClient.SqlCommand();??????????? //SqlConnection cn = new SqlConnection();??????????? SqlCeCommand cm = new SqlCeCommand();??????????? SqlCeConnection cn = new SqlCeConnection();??????????? //cn.ConnectionString = "Data Source=symbol.sdf";??????????? //cn.ConnectionString = "server=JC91109;uid=sa;pwd=sa;database=symbol";??????????? cn.ConnectionString = "data source=symbol.sdf";??????????? cn.Open();??????????? cm.Connection = cn;??????? }