Typed Accessors: int, varchar and decimal : SqlDataReader « ADO.Net « C# / CSharp Tutorial

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

using System;
using System.Data;
using System.Data.SqlClient;

class MainClass
{
   static void Main(string[] args)
   {
      string connString = @"server = .\sqlexpress;integrated security = true;database = northwind";

      string sql = @"select productname,unitprice,unitsinstock,discontinued from products";

      SqlConnection conn = new SqlConnection(connString); 

      try
      {
         conn.Open();

         SqlCommand cmd = new SqlCommand(sql, conn);

         SqlDataReader rdr = cmd.ExecuteReader();

         while (rdr.Read())
         {
            Console.WriteLine(
               "{0}\t {1}\t\t {2}\t {3}",
               // nvarchar
               rdr.GetString(0).PadRight(30), 
               // money
               rdr.GetDecimal(1),
               // smallint
               rdr.GetInt16(2),
               // bit
               rdr.GetBoolean(3));
         }
         rdr.Close();
      }
      catch(Exception e)
      {
         Console.WriteLine("Error Occurred: " + e);
      }
      finally
      {
         conn.Close();
      }
   }
}