My first .NET gui in Powershell

I managed to interface Oracle and a GUI via powershell.

First, load the Oracle and the .NET assemblies


[void] [Reflection.Assembly]::LoadFile("C:\oracle\product\11.2.0\client_1\ODP.NET\bin\2.x\Oracle.DataAccess.dll")
[void] [Reflection.Assembly]::LoadWithPartialName("Drawing")
[void] [Reflection.Assembly]::LoadWithPartialName("Windows.Forms")

Now, let’s retrieve EMP in a powershell array. I hope one of my reader will advise me on a better way :)


$connection=New-Object Oracle.DataAccess.Client.OracleConnection("Data Source=DB01; User Id=scott; password=tiger")
$connection.open()
$command=new-object Oracle.DataAccess.Client.OracleCommand("select ename from emp",$connection)
$reader = $command.ExecuteReader()
$a = @()
while ($reader.Read()) {
  $a = $a + $reader.GetString(0)
}
$connection.close()

last, let’s create a simple window (a Form) with a list (a List box) where you can select an item with a doubleclick.

Initialize the list with the array from EMP



$form = New-Object Windows.Forms.Form
$form.Text = "Select employee !"
$form.Size = New-Object Drawing.Size(640,480)
$form.StartPosition = "CenterScreen"
$listbox = New-Object Windows.Forms.ListBox
$listbox.Location = New-Object Drawing.Point(10,10)
$listbox.Size = New-Object Drawing.Size(620,460)
$listbox.Items.AddRange($a)
$listbox.Add_DoubleClick({$form.Close();})
$form.Controls.Add($listbox)
$form.Topmost = $True
$form.Add_Shown({$form.Activate()})
[void] $form.ShowDialog()

Show the result (or use it in your powershell scripts)


PS> $listbox.SelectedItems[0]
SCOTT

Pretty cool! No compiler needed, directly run from the powershell prompt

2 thoughts on “My first .NET gui in Powershell”

  1. Reinventing TCL/tk or Perl. It is just a new syntax to learn that will do not better what has already been achieved by others.

  2. Ok about reinventing, copying, etc. Microsoft took the best of unix, visual basic and .net and made it an excellent shell with full access to your .net libraries. All pipes, subshell, access to your windows resources, service, registry, xml, database, sharepoint. A world of features!

    I like it a lot more than Perl. No doubt!

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