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作者： unknow

using System;
using System.Data;
using System.Data.OracleClient;

class Sample
{
public static void Main()
{
string myConnString = "user id=zk;data source=zkqx;password=*****";
OracleConnection myConnection = new OracleConnection(myConnString);

OracleCommand catCMD = myConnection.CreateCommand();
catCMD.CommandText = " SELECT CZYDM,CZYMC,CZYMM,CZYQX FROM ZC_CZY ";

myConnection.Open();

OracleDataReader myReader = catCMD.ExecuteReader();

while (myReader.Read())
{
Console.WriteLine("\t{0}\t{1}\t{2}\t{3}", myReader.GetString(0),myReader.GetString(1),myReader.GetString(2),myReader.GetString(3));
}

myReader.Close();

myConnection.Close();
}
}