Why does a form displayed by PowerShell sometimes not show up?

Question

When I create a form (window) in PowerShell, I can usually display the form using .ShowDialog():

$form = New-Object System.Windows.Forms.Form
$form.ShowDialo         


        

Answer 1

Avoid using Show() from PowerShell as it requires a message pump and that isn't something the PowerShell console provides on the thread that creates your form. ShowDialog() works because the OS does the message pumping during this modal call. Creating the form and calling ShowDialog() works reliably for me.