c# 连接oracle简单示例

首先添加.Net的引用System.Data.OracleClient到项目中；

app.config配置连接字符串：<add name="OracleConn" connectionString="Provider=OraOLEDB.Oracle;Data Source=(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=服务器的IP地址)(PORT=1521)) (CONNECT_DATA=(SERVICE_NAME=数据库名称)));User ID=用户名;Password=密码;Unicode=True" providerName="System.Data.OracleClient"/>

然后class类中调用：

            string strConn = ConfigurationManager.ConnectionStrings["OracleConn"].ConnectionString;

            OleDbConnection conn = new OleDbConnection(strConn);

            conn.Open();

            OleDbCommand comm = new OleDbCommand("select xf_plu,xf_desci from (select xf_plu,xf_desci from xf_itemmas order by rownum) where rownum <= 10", conn);

            OleDbDataReader dr = comm.ExecuteReader();

            Console.WriteLine("商品码      商品描述");

            while (dr.Read())

            {

                Console.WriteLine(dr.GetString(0) + "   " + dr.GetString(1));

            }

            Console.ReadLine();

            dr.Close();

            conn.Close();