using System;
using System.Data;
using System.Data.SqlClient;
class UsingColumnOrdinals
{
public static void Main()
{
SqlConnection mySqlConnection =new SqlConnection("server=(local)\\SQLEXPRESS;database=MyDatabase;Integrated Security=SSPI;");
SqlCommand mySqlCommand = mySqlConnection.CreateCommand();
mySqlCommand.CommandText = "SELECT TOP 5 ID, FirstName, LastName FROM employee " +
"ORDER BY ID";
mySqlConnection.Open();
SqlDataReader productsSqlDataReader = mySqlCommand.ExecuteReader();
int idPos = productsSqlDataReader.GetOrdinal("ID");
int firstNamePos = productsSqlDataReader.GetOrdinal("LastName");
int lastNamePos = productsSqlDataReader.GetOrdinal("FirstName");
while (productsSqlDataReader.Read())
{
Console.WriteLine("ID = " + productsSqlDataReader[idPos]);
Console.WriteLine("FirstName = " + productsSqlDataReader[firstNamePos]);
Console.WriteLine("LastName = " + productsSqlDataReader[lastNamePos]);
}
productsSqlDataReader.Close();
mySqlConnection.Close();
}
}
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