F#: A simple oracle database application

The following is an example of how to connect to an Oracle database, retrieve some results and display them in a DataGrid in F#:

(* Use lightweight F# syntax *)
#light

#r @"System.Data.OracleClient.dll";;

(* Import managed assemblies *)
open System
open System.Data
open System.Data.Common
open System.Data.OracleClient
open System.Collections
open System.Text
open System.Windows.Forms

let form =
  let f = new Form()
  f.Visible <- true    
  f.TopMost <- true    
  f.Text <- "F# Query"     
  f.Height <- 600   
  f.Width <- 800    
  f    
let grid =    
  let g = new DataGrid()    
  g.Dock <- DockStyle.Fill    
  g    
form.Controls.Add(grid)   
let connection_string = "Server=SID;Uid=johndoe;Pwd=password;" 
let sql = "select * from tblwb_job"  
let data_table = new Data.DataTable()   
try    
  let connection = new OracleClient.OracleConnection(connection_string)    
  let command = new OracleClient.OracleCommand (sql, connection)    
  let adapter = new OracleDataAdapter(command)    
  let r = adapter.Fill(data_table)    
  connection.Close() 
  with    
    | :? System.InvalidOperationException as ex ->
      ignore(MessageBox.Show(ex.Message))
    | _ ->
      ignore(MessageBox.Show("Unknown Exception"))

grid.DataSource <- data_table    
do Application.Run(form)

Pretty sad that I couldn't play with Haskell as much as I want. At least, I can work on some functional language while working on real work.