Powershell popup while file is being moved - powershell

Question

When my script starts it moves a file from one directory to another. After the file is completely downloaded I launch an application.
This all works, but what I would like is a popup window to appear while the file is being moved (Large files).
When I debug my code once it hits the Move-Item Cmdlet it waits until that command is completed before it moves on. What I want to do is while the Move-Item Cmdlet is running, popup an information window.
I know how to do the popup and the Move-Item, I just don't know how to get it to work the way I want. Any ideas?
Popup code
#pop up window letting mechanic know we are waiting for the files to be downloaded before opeing the SMT application
$wshell = New-Object -ComObject Wscript.Shell
$wshell.Popup("The EAFR file is still being moved to the correct directory, please wait.",0,"SMT Status",0)
#Move-Item
$MLMoveDir = "C:\move\data\AutoUpload\"
Move-Item -LiteralPath ($filePath) $MLMoveDir

Answer 1

One option is to use WinForms to display a Please Wait dialog, rather than a Popup that has to be dismissed by the user. Something like:
Add-Type -AssemblyName System.Windows.Forms
$Form = New-Object system.Windows.Forms.Form
$Label = New-Object System.Windows.Forms.Label
$Form.Controls.Add($Label)
$Label.Text = "Copying file, please wait."
$Label.AutoSize = $True
$Form.Visible = $True
$Form.Update()
#Move-Item
$MLMoveDir = "C:\move\data\AutoUpload\"
Move-Item -LiteralPath ($filePath) $MLMoveDir
#Hide popup
$Form.Close()

Answer 2

So what you could do is start the Move-Item as a job, and then do a While((get-job "jobname").state -ne completed){do popup}. I would look something like this:
#Move-Item
$MLMoveDir = "C:\move\data\AutoUpload\"
$MoveJob = Start-Job -scriptblock {Move-Item -LiteralPath ($filePath) $MLMoveDir}
#Show Popup
While($movejob.state -ne "Completed"){
$wshell = New-Object -ComObject Wscript.Shell
$wshell.Popup("The EAFR file is still being moved to the correct directory, please wait.",1,"SMT Status",0)
}
That way the popup shows for 1 second, and if the move is still happening it shows it again. I don't know that it would even appear to disappear/re-show so it would likely be seamless.