Csharp/C Sharp/Database ADO.net/ODBC

ODBC connection

using System;
using System.Data; 
using System.Data.Odbc; 
class OdbcProvider
{
   static void Main(string[] args)
   {
      string connString = @"dsn=northwindodbc";
      string sql = @"select * from employees";
      OdbcConnection conn = null;
      OdbcDataReader reader = null;
      try {
         conn = new OdbcConnection(connString);
         conn.Open();
         OdbcCommand cmd = new OdbcCommand(sql, conn);
         reader = cmd.ExecuteReader();
         Console.WriteLine(
            "Querying database {0} with query {1}\n"
            , conn.Database
            , cmd.rumandText
            );
         Console.WriteLine("First Name\tLast Name\n");
         while(reader.Read()) {
            Console.WriteLine(
               "{0} | {1}" 
               , reader["FirstName"].ToString().PadLeft(10) 
               , reader[1].ToString().PadLeft(10)
               );
         }
      } catch (Exception e) {
         Console.WriteLine("Error: " + e);
      } finally {
         reader.Close();
         conn.Close();
      }
   }
}

Odbc Error Handler

 
using System;
using System.Diagnostics;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.Odbc;

public class MainClass {
    [STAThread]
    static void Main() {
        OdbcConnection cn;
        try {
            cn = new OdbcConnection();
            cn.ConnectionString = "driver={SQL Serve};server=.;uid=admin;pwd=pw;database=biblio";
            cn.Open();
        } catch (OdbcException ex) {
            if (ex.InnerException != null) {
                Debug.WriteLine("InnerException:" + ex.InnerException.Message);
            }
            MessageBox.Show(ex.ToString());
            Debug.WriteLine("Message:" + ex.Message.ToString());
            Debug.WriteLine("Source:" + ex.Source.ToString());
            Debug.WriteLine("StackTrace:" + ex.StackTrace.ToString());
            Debug.WriteLine("TargetSite:" + ex.TargetSite.ToString()); // Not in OleDB
            if (ex.HelpLink != null) {
                Debug.WriteLine("HelpLink:" + ex.HelpLink);
            }
        }
    }
}