Windows Form App con Powershell

MiPrimerForm.ps1

[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")  
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") 
[void] [System.Windows.Forms.Application]::EnableVisualStyles() 

$button_click = {
	$SQLServer = "NombreDelServidor"
	$SQLDBName = "AdventureWorks"
	$uid ="Usuario"
	$pwd = "Password"
	$SqlQuery = "SELECT * from [Production].[vProductAndDescription];"
	$SqlConnection = New-Object System.Data.SqlClient.SqlConnection
	$SqlConnection.ConnectionString = "Server = $SQLServer; Database = $SQLDBName; Integrated Security = False; User ID = $uid; Password = $pwd;"
	$SqlCmd = New-Object System.Data.SqlClient.SqlCommand
	$SqlCmd.CommandText = $SqlQuery
	$SqlCmd.Connection = $SqlConnection
	$SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter
	$SqlAdapter.SelectCommand = $SqlCmd
	$DataSet = New-Object System.Data.DataSet
	$SqlAdapter.Fill($DataSet)
	$SqlConnection.close()
	$DataSet.tables[0] | Out-GridView
}

$Form = New-Object system.Windows.Forms.Form 
$Form.Size = New-Object System.Drawing.Size(300,200) 
$form.MaximizeBox = $false 
$Form.StartPosition = "CenterScreen" 
$Form.FormBorderStyle = 'Fixed3D' 
$Form.Text = "App Dummy AdventureWorks"
$Label = New-Object System.Windows.Forms.Label 
$Label.Text = "Escoja la accion" 
$Label.AutoSize = $true 
$Label.Location = New-Object System.Drawing.Size(75,50) 
$Font = New-Object System.Drawing.Font("Arial",15,[System.Drawing.FontStyle]::Bold) 
$Label.Font = $Font 
$Form.Controls.Add($Label)
$Okbutton = New-Object System.Windows.Forms.Button 
$Okbutton.Location = New-Object System.Drawing.Size(40,80) 
$Okbutton.Size = New-Object System.Drawing.Size(100,30) 
$Okbutton.Text = "Query" 
$Okbutton.Add_Click($button_click)
$Form.Controls.Add($Okbutton)

$Closebutton = New-Object System.Windows.Forms.Button 
$Closebutton.Location = New-Object System.Drawing.Size(150,80) 
$Closebutton.Size = New-Object System.Drawing.Size(100,30) 
$Closebutton.Text = "Close"
$Closebutton.Add_Click({$Form.Close()}) 
$Form.Controls.Add($Closebutton)

$Form.ShowDialog()