Powershell form.

#Set up the form
#Load the required .NET libraries
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")

function foobar() {
    #$a = gwmi win32_bios
    #echo $a

    $comp = '.'

    $stuff = gwmi -class "win32_localtime" -namespace "root/CIMV2" -computername $comp

    foreach ($thingie in $stuff) {
        [void]$ourlistbox.items.Add('Day' + $thingie.Day)
    }
}

function trollface() {
    $last = gwmi -query "select LastBootUpTime from win32_operatingsystem"
    $last.ConvertToDateTime($last.LastBootUpTime)
    [void]$objTextBox.items.Add('Bootup time:' + $last)
}

#Create the plain form
$ourForm = New-Object System.Windows.Forms.Form
$ourForm.Text = "Our Practice Powershell Application"
$ourForm.Size = New-Object System.Drawing.Size(1024,1000)
$ourForm.StartPosition = "CenterScreen"
$ourForm.KeyPreview = $True

$objLabel2 = new-object System.Windows.Forms.Label
$objLabel2.Location = new-object System.Drawing.Size(10,10)
$objlabel2.Size = new-object System.Drawing.Size(96,20)
$objLabel2.Text = "Misc text."
$ourForm.Controls.Add($objLabel2)

#Add listbox
$ourListbox = New-Object System.Windows.Forms.Listbox
$ourListbox.Location = New-Object System.Drawing.Size(10,40)
$ourListbox.Size = New-Object System.Drawing.Size(200,64)
$ourForm.Controls.Add($ourListbox)

#Add a command button to close form
$closeButton = New-Object System.Windows.Forms.Button
$closeButton.Location = New-Object System.Drawing.Size(145,150)
$closeButton.Size = New-Object System.Drawing.Size(75,23)
$closeButton.Text = "Close"
$closeButton.Add_Click({$ourForm.Close()})
$ourForm.Controls.Add($closeButton)

#Add a command button to activate form
$runButton = New-Object System.Windows.Forms.Button
$runButton.Location = New-Object System.Drawing.Size(230,150)
$runButton.Size = New-Object System.Drawing.Size(75,23)
$runButton.Text = "Run"
$runButton.Add_Click({foobar})
$ourForm.Controls.Add($runButton)

$objLabel1 = new-object System.Windows.Forms.Label
$objLabel1.Location = new-object System.Drawing.Size(400,40)
$objlabel1.Size = new-object System.Drawing.Size(96,20)
$objLabel1.Text = "Last bootup time."
$ourForm.Controls.Add($objLabel1)

$objTextBox = new-object System.Windows.Forms.TextBox
$objTextBox.Location = new-object System.Drawing.Size(500,40)
$objTextBox.Size = new-object System.drawing.size (260,90)
$ourForm.Controls.Add($objTextBox)

#Add a command button to activate form
$printButton = New-Object System.Windows.Forms.Button
$printButton.Location = New-Object System.Drawing.Size(310,150)
$printButton.Size = New-Object System.Drawing.Size(85,23)
$printButton.Text = "Print"
$printButton.Add_Click({trollface})
$printButton.Add_Click({$objTextBox.Text=trollface})
$ourForm.Controls.Add($printButton)

#Activate the form
$ourForm.Add_Shown({$ourForm.Activate()})
[void] $ourForm.ShowDialog()