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string constring = "data source=myoracle;user=sys;password=abc123;"
OracleConnection conn = new OracleConnection(constring);//½øÐÐÁ¬½Ó
conn.Open();//´ò¿ªÖ¸¶¨µÄÁ¬½Ó

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using System.Data.OracleClient;using System.Data;//ÔÚ´°ÌåÉÏÌí¼ÓÒ»¸ö°´Å¥£¬½ÐButton1£¬Ë«»÷Button1£¬ÊäÈëÒÔÏ´úÂëprivate void Button1_Click(object sender, System.EventArgs e){string ConnectionString="Data Source=sky;user=system;password=manager;";//дÁ¬½Ó´®OracleConnection conn=new OracleConnection(ConnectionString);//´´½¨Ò»¸öÐÂÁ¬½Ótry{conn.Open();OracleCommand cmd=conn.CreateCommand();cmd.CommandText="select * from MyTable";//ÔÚÕâ¶ùдsqlÓï¾äOracleDataReader odr=cmd.ExecuteReader();//´´½¨Ò»¸öOracleDateReader¶ÔÏówhile(odr.Read())//¶ÁÈ¡Êý¾Ý£¬Èç¹ûodr.Read()·µ»ØÎªfalseµÄ»°£¬¾Í˵Ã÷µ½¼Ç¼¼¯µÄβ²¿ÁË odr.Close();}catch(Exception ee){Response.Write(ee.Message); //Èç¹ûÓдíÎó£¬Êä³ö´íÎóÐÅÏ¢}finally{conn.Close(); //¹Ø±ÕÁ¬½Ó}}


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£¨1£©string ConnString = "server=localhost;integrated security=sspi;database=pubs;";   
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    commandtext:='select bgqxcode,count(*) wjsl from wscl_wsda_file where wjnd=:tnd group by bgqxcode'; ......

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