How to handle timer with GUI using powershell? - powershell

Question

I have cmd script. I want to use timer for 10 second to give a decision to continue cmd script process or to pause it.
I want to put this script at the first line of my cmd script
powershell.exe -ExecutionPolicy Bypass -File %~dp0\Pause_GUI.ps1
It will pop up 10s countdown, after 10s, it will continue the cmd script process by return errorlevel, but if we click button pause, the cmd script will pause, also by return errorlevel.
Anyone can help please
UPDATED
#------------------------------------------- Add in Forms Controls -------------------------------------------#
Add-Type -AssemblyName System.Windows.Forms
#-------------------------------------------------------------------------------------------------------------#
#---------------------------------------- Begins creation of the form ----------------------------------------#
$MainForm = New-Object System.Windows.Forms.Form
$MainForm.Text = "Message"
$MainForm.Width = 500
$MainForm.Height = 200
$MainForm.StartPosition = "CenterScreen"
$MainForm.BackColor = "#e2e2e2"
#-------------------------------------------------------------------------------------------------------------#
#----------------------------------------------- Button Clicks -----------------------------------------------#
$Auto_Button = ({ $global:result=1
$MainForm.Close() })
$Manual_Button = ({ $global:result=0
$MainForm.Close() })
#-------------------------------------------------------------------------------------------------------------#
#-------------------------------------------------- Buttons --------------------------------------------------#
$Automatic = New-Object System.Windows.Forms.Button
$Automatic.Location = New-Object System.Drawing.Size(110,80)
$Automatic.Size = New-Object System.Drawing.Size(120,30)
$Automatic.Text = "Continue After 10s"
$Automatic.BackColor = "#e47104"
$Automatic.Add_Click($Auto_Button)
$MainForm.Controls.Add($Automatic)
$Manual = New-Object System.Windows.Forms.Button
$Manual.Location = New-Object System.Drawing.Size(270,80)
$Manual.Size = New-Object System.Drawing.Size(100,30)
$Manual.Text = "Pause"
$Manual.BackColor = "#e47104"
$Manual.Add_Click($Manual_Button)
$MainForm.Controls.Add($Manual)
#-------------------------------------------------------------------------------------------------------------#
#--------------------------------------------- Displays the Form ---------------------------------------------#
$result=0
$MainForm.ShowDialog()
exit $result
#-------------------------------------------------------------------------------------------------------------#
How to handle the button "Continue after 10s" as a timer? And the GUI will close automatically after 10s

Answer 1

You need a System.Windows.Forms.Timer-object that counts your time and a .tick-event that will trigger when the time has come. However you need to stop (and dispose) the timer or it will keep on triggering the event even when the window is closed. (In Powershell ISE that could cause windows to close as soon as you load them). To grab the timer from within it's own event you need to adress it in the right scope. I used the global-scope for that.
$Auto_Button = ({
$global:Counter = 0
$global:timer = New-Object -type System.Windows.Forms.Timer
$global:timer.Interval = 1000
$global:timer.add_Tick({
if ($Counter -eq 10){
write-host $global:counter
$global:timer.Stop()
$global:timer.Dispose()
$result=1
$MainForm.Close()
$global:Counter++
}else{
write-host $global:counter
$global:Counter++
}
})
$global:timer.Start()
})