Powershell script with runspace

Question

I have a script that uses windows forms and runspace. I can't realize that after clicking on "Clean Now" button my gif picture would keep rotating and after ExitCode 0 I would get Show-SuccessForm (function in my code) but Show-SuccessForm just refuses to appear. I'm sure that ExitCode 0 is visible in debugging What could be the reason?

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing
# Create the form
$form = New-Object System.Windows.Forms.Form
$form.Text = "Periodic Control"
$form.Size = New-Object System.Drawing.Size(400, 300)
$form.StartPosition = "CenterScreen"
$form.TopMost = $true
$form.FormBorderStyle = [System.Windows.Forms.FormBorderStyle]::FixedDialog
$form.MaximizeBox = $false
$form.MinimizeBox = $false
# Create the exclamation icon
$iconLabel = New-Object System.Windows.Forms.Label
$iconLabel.Size = New-Object System.Drawing.Size(32, 32)
$iconLabel.Location = New-Object System.Drawing.Point(10, 10)
$iconLabel.Image = [System.Drawing.SystemIcons]::Exclamation.ToBitmap()
$form.Controls.Add($iconLabel)
# Determine the text based on system language
$language = [System.Globalization.CultureInfo]::CurrentUICulture.TwoLetterISOLanguageName
switch ($language) {
 "ru" {
 # $text = 
 }
 "uk" {
 # $text = 
 }
 default {
 $text = "text"
 }
}
# Create the notification text
$label = New-Object System.Windows.Forms.Label
$label.Size = New-Object System.Drawing.Size(360, 100)
$label.Location = New-Object System.Drawing.Point(50, 10)
$label.Text = $text
$form.Controls.Add($label)
# Create the timer label
$timerLabel = New-Object System.Windows.Forms.Label
$timerLabel.Size = New-Object System.Drawing.Size(360, 30)
$timerLabel.Location = New-Object System.Drawing.Point(50, 120)
$form.Controls.Add($timerLabel)
$timeLeft = 60 * 60 # 60 minutes in seconds
# Create the progress bar
$progressBar = New-Object System.Windows.Forms.ProgressBar
$progressBar.Size = New-Object System.Drawing.Size(300, 30)
$progressBar.Location = New-Object System.Drawing.Point(50, 150)
$progressBar.Minimum = 0
$progressBar.Maximum = $timeLeft
$progressBar.Value = $timeLeft
$form.Controls.Add($progressBar)
# Function to update the timer
function Update-Timer {
 $global:timeLeft -= 1
 $minutes = [math]::Floor($global:timeLeft / 60)
 $seconds = $global:timeLeft % 60
 $timerLabel.Text = "Time remaining: $minutes minutes $seconds seconds"
 $progressBar.Value = $global:timeLeft
 if ($global:timeLeft -le 0) {
 $timer.Stop()
 [System.Windows.Forms.MessageBox]::Show("Cleaning started")
 # Add script for actual cleaning here
 }
}
# Create the timer
$timer = New-Object System.Windows.Forms.Timer
$timer.Interval = 1000
$timer.Add_Tick({
 Update-Timer
})
$timer.Start()
# Initial timer setup
Update-Timer
# Create the "Clean Now" button
$button = New-Object System.Windows.Forms.Button
$button.Size = New-Object System.Drawing.Size(100, 30)
$button.Location = New-Object System.Drawing.Point(150, 200)
$button.Text = "Clean Now"
$form.Controls.Add($button)
# Create the spinner PictureBox
$spinner = New-Object System.Windows.Forms.PictureBox
$spinner.AutoSize = $true
$spinner.Location = New-Object System.Drawing.Point(150, 100)
$SpinnergifLink = 'C:\Windows\Temp\Spinner.gif'
$Spinnerimg = [System.Drawing.Image]::FromFile($SpinnergifLink)
$spinner.Image = $Spinnerimg
$spinner.Visible = $false
$form.Controls.Add($spinner)
# Create the processing label
$processingLabel = New-Object System.Windows.Forms.Label
$processingLabel.Size = New-Object System.Drawing.Size(300, 30)
$processingLabel.Location = New-Object System.Drawing.Point(100, 60)
$processingLabel.Font = [System.Drawing.Font]::new("Bold", 12, [System.Drawing.FontStyle]::Bold)
$processingLabel.Text = "Clean files processing..."
$processingLabel.Visible = $false
$form.Controls.Add($processingLabel)
# Function to handle cleaning process
function Run-CleanProcess {
 
 $spinner.Visible = $true
 $processingLabel.Visible = $true
 $label.Visible = $false
 $timerLabel.Visible = $false
 $progressBar.Visible = $false
 $button.Visible = $false
 
 $scriptBlock = {
 $StartClearFiles = Start-Process powershell.exe -ArgumentList "-ExecutionPolicy Bypass", "-File C:\Windows\Temp\ClearJob.ps1" -NoNewWindow -Wait -PassThru
 return $StartClearFiles.ExitCode
 
 }
 $runspace = [powershell]::Create().AddScript($scriptBlock)
 $asyncResult = $runspace.BeginInvoke()
 $timerCheck = New-Object System.Windows.Forms.Timer
 $timerCheck.Interval = 500 # Check every 500 milliseconds
 $timerCheck.Add_Tick({ 
 if($asyncResult.IsCompleted -eq $true) {
 $exitCode = $runspace.EndInvoke($asyncResult)
 $runspace.runspace.dispose()
 $runspace.dispose()
 if ($exitcode -eq 0) {
 Show-SuccessForm
 }
 else {
 [System.Windows.Forms.MessageBox]::Show("Cleaning failed.")
 }
 }
 }) 
}
# Function to show success message
function Show-SuccessForm {
 $successForm = New-Object System.Windows.Forms.Form
 $successForm.Text = "Success"
 $successForm.Size = New-Object System.Drawing.Size(300, 150)
 $successForm.StartPosition = "CenterScreen"
 $successForm.TopMost = $true
 $successForm.FormBorderStyle = [System.Windows.Forms.FormBorderStyle]::FixedDialog
 $successForm.MaximizeBox = $false
 $successForm.MinimizeBox = $false
 $successLabel = New-Object System.Windows.Forms.Label
 $successLabel.Size = New-Object System.Drawing.Size(260, 50)
 $successLabel.Location = New-Object System.Drawing.Point(20, 20)
 $successLabel.Text = "Success"
 $successForm.Controls.Add($successLabel)
 $okButton = New-Object System.Windows.Forms.Button
 $okButton.Size = New-Object System.Drawing.Size(100, 30)
 $okButton.Location = New-Object System.Drawing.Point(100, 80)
 $okButton.Text = "OK"
 $okButton.Add_Click({
 $successForm.Close()
 })
 
 $successForm.Controls.Add($okButton)
 [void]$successForm.ShowDialog()
}
$button.Add_Click({
 $timer.Stop()
 Run-CleanProcess
})
# Form closing event handler to prevent closing
$form.Add_FormClosing({
 $_.Cancel = $false # Cancel form closing
})
# Show the form
[void]$form.ShowDialog()

I tried using while but it caused the form to stop updating and my picture hangs up

 $scriptBlock = {
 $StartClearFiles = Start-Process powershell.exe -ArgumentList "-ExecutionPolicy Bypass", "-File C:\Windows\Temp\ClearJob.ps1" -NoNewWindow -Wait -PassThru
 return $startClearFiles.ExitCode
 
 }
 
 $runspace = [powershell]::Create().AddScript($scriptBlock)
 $asyncResult = $runspace.BeginInvoke()
 while ($asyncResult.IsCompleted -notcontains $true) {}
 $exitCode = $runspace.EndInvoke($asyncResult)
 
 $runspace.Dispose()
 
 
 if ($exitcode -eq 0) {
 Show-SuccessForm
 $form.Add_FormClosing({
 $_.Cancel = $false # Enable form closing
 })
 $form.Close()
 }

• Jimi: What is starting $timerCheck?
• Jimi: As a note, Timers that don't act as child Components (are not added to the IComponent container of a Form), are not automatically disposed when the Form closes
• mclayton: There’s too much code to go through in detail, but this "busy wait" isn’t ideal - while ($asyncResult.IsCompleted -notcontains $true) {} (see en.m.wikipedia.org/wiki/Busy_waiting). You probably want a short sleep inside the body of the while or something...