Reload oder Restart Button in der GUI

$window = Add-Type -memberDefinition @"  
[DllImport("user32.dll")]  
public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
"@ -name "Win32ShowWindowAsync" -namespace Win32Functions -passThru  
$window::ShowWindow((Get-Process –id $pid).MainWindowHandle, 0) 
	
	$Printers = Get-WmiObject -Class Win32_Printer | Select-Object -ExpandProperty name
    $currentPrinter = Get-WmiObject -Query " SELECT * FROM Win32_Printer WHERE Default=$true" | Select-Object -ExpandProperty name  
		
    Add-Type -AssemblyName System.Windows.Forms	

    $Form = New-Object system.Windows.Forms.Form		
    $Form.Text = "Standard Drucker Einstellung"  
    $Form.BackColor = "#d7ebfe"  
    $Form.TopMost = $true
    $Form.Width = 1000
    $Form.Height = 500
    $Form.StartPosition = "CenterScreen"  
    $Icon = [system.drawing.icon]::ExtractAssociatedIcon($PSHOME + "\powershell.exe")  
    $Form.Icon = $Icon
    $lb_availablePrinters = New-Object system.windows.Forms.Label
    $lb_availablePrinters.Text = "verfügbare Drucker"  
    $lb_availablePrinters.AutoSize = $true
    $lb_availablePrinters.Width = 10
    $lb_availablePrinters.Height = 10
    $lb_availablePrinters.location = new-object system.drawing.point(17,117)
    $lb_availablePrinters.Font = "Verdana,20"  
    $Form.controls.Add($lb_availablePrinters)

    $lb_defaultPrinter = New-Object system.windows.Forms.Label
    $lb_defaultPrinter.Text = "aktueller Drucker"  
    $lb_defaultPrinter.AutoSize = $true
    $lb_defaultPrinter.Width = 25
    $lb_defaultPrinter.Height = 10
    $lb_defaultPrinter.location = new-object system.drawing.point(450,117)
    $lb_defaultPrinter.Font = "Verdana,20"  
    $Form.controls.Add($lb_defaultPrinter)   

    $bt_close = New-Object system.windows.Forms.Button
    $bt_close.Text = "Schließen"  
    $bt_close.ForeColor = "White"  
    $bt_close.BackColor = "Red"  
    $bt_close.Cursor = [System.Windows.Forms.Cursors]::Hand
    $bt_close.Width = 145
    $bt_close.Height = 33
    $bt_close.Add_Click({
    $Form.Close()
    })
    $bt_close.location = new-object system.drawing.point(800,374)
    $bt_close.Font = "Verdana,15,style=Bold"  
    $Form.controls.Add($bt_close)
    
    $v_printer = New-Object system.windows.Forms.Button
    $v_printer.Text = "Übersicht verfügbare Drucker  -  Klick mich"  
    $v_printer.AutoSize = $true
    $v_printer.ForeColor = "Black"  
    $v_printer.backColor = "White"  
	$v_printer.Cursor = [System.Windows.Forms.Cursors]::Hand
    $v_printer.Width = 960
    $v_printer.Height = 33
    $v_printer.Add_Click({
    start-process "\\serverxyz\info\drucker"  
    })
    $v_printer.location = new-object system.drawing.point(10,28)
    $v_printer.Font = "Verdana,15,style=Bold"  
    $Form.controls.Add($v_printer)

   $CHANGEButton = new-object System.Windows.Forms.Button
   $CHANGEButton.Location = new-object System.Drawing.Size(20,330)
   $CHANGEButton.Size = new-object System.Drawing.Size(150,20)
   $CHANGEButton.Text = "Aktualisieren"  
   $CHANGEButton.ForeColor = "Black"  
   $CHANGEButton.backColor = "White"  
   $CHANGEButton.Add_Click({ALL})
   $Form.Controls.Add($CHANGEButton)

    $lb_printer = New-Object system.windows.Forms.Label
    $lb_printer.Text = "$currentPrinter"  
    $lb_printer.AutoSize = $true
    $lb_printer.Width = 350
    $lb_printer.Height = 50
    $lb_printer.location = new-object system.drawing.point(450,186)
    $lb_printer.Font = "Verdana,15"  
    $Form.controls.Add($lb_printer)
   
    $lstBX_printers = New-Object system.windows.Forms.ListBox
    $lstBX_printers.Width = 300
    $lstBX_printers.Height = 144
    $lstBX_printers.location = new-object system.drawing.point(20,186)
    foreach ($Printer in $Printers)
    {
        $lstBX_printers.Items.Add($Printer)
    }
    $lstBX_printers.Add_Click({
        $Global:currentPrinter = $lstBX_printers.SelectedItem
    })
    $Form.controls.Add($lstBX_printers)
    $bt_setDefault = New-Object system.windows.Forms.Button
    $bt_setDefault.Text = "als Standard einrichten"  
    $bt_setDefault.ForeColor = "White"  
    $bt_setDefault.BackColor = "Green"  
    $bt_setDefault.Cursor = [System.Windows.Forms.Cursors]::Hand
    $bt_setDefault.Width = 300
    $bt_setDefault.Height = 33
    $bt_setDefault.Add_Click({
        (New-Object -ComObject WScript.Network).SetDefaultPrinter($Global:currentPrinter)
        $lb_printer.Text = "$Global:currentPrinter"  
        $lb_printer.Refresh()
    })
    $bt_setDefault.location = new-object system.drawing.point(20,373)
    $bt_setDefault.Font = "Verdana,12,style=Bold"  
    $Form.controls.Add($bt_setDefault)
    [void]$Form.ShowDialog()
    $Form.Dispose()