Using OracleCommand to do the query sql : Oracle « ADO.Net « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. ADO.Net
3. Oracle

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

class Class1{
    static void Main(string[] args)
    {
      string connstr = "User Id=scott; Password=tiger; Data Source=oranet";
      OracleConnection con = new OracleConnection(connstr);
      con.Open();
      string sql = "select empno, ename from emp";

      OracleCommand cmd = new OracleCommand(sql, con);
      OracleDataReader dr = cmd.ExecuteReader();
      while (dr.Read())
      {
        Console.Write(dr[0].ToString() + "\t");
        Console.Write(dr[1].ToString() + "\t");
        Console.Write(dr[2].ToString() + "\t");
        Console.WriteLine(dr[3].ToString());
      }

      // close and dispose the objects
      dr.Close();
      dr.Dispose();
      cmd.Dispose();
      con.Close();
      con.Dispose();
    }
}