Test-WPFRSJob.ps1

$RunSpace=[RunspaceFactory]::CreateRunspace()
$RunSpace.ApartmentState = "STA"
$RunSpace.Open()
$PowerShell = [PowerShell]::Create()
$PowerShell.Runspace = $RunSpace
[void]$PowerShell.AddScript({ 

　
#region MainWindow Script
Add-Type -AssemblyName presentationframework, presentationcore
#region Build the GUI
$xaml = @"
<Window x:Class="TestWPF.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:TestWPF"
        mc:Ignorable="d"
        Title="MainWindow" Height="150" Width="500">
    <StackPanel>
        <Label Name="Label1" HorizontalAlignment="Center">Message</Label>
        <Button Name="Button1" Width="200" Height="25">Press me</Button>
        <Label></Label>
        <ProgressBar Name="Progress1" Width="400" Height="25" Value="00" Maximum="100" ></ProgressBar>
    </StackPanel>
</Window>
"@

$xaml = $xaml -replace 'x:Class=".*?"' -replace 'mc:Ignorable="d"' -replace 'xmlns:local=".*?"'
$xml=[xml]$xaml
$reader=(New-Object System.Xml.XmlNodeReader $xml)
#endregion

$syncHash = [hashtable]::Synchronized(@{})
$syncHash.MyValue = 0
$syncHash.LongJob = $null

#region Connect to Controls
$syncHash.Window = [Windows.Markup.XamlReader]::Load( $reader )

$syncHash.Label = $syncHash.Window.FindName('Label1')
$syncHash.Button = $syncHash.Window.FindName('Button1')
$syncHash.Progress = $syncHash.Window.FindName('Progress1')
#endregion

#region LogJob
$LongJobScriptBlock = {
	param($syncHash)
	$exiting = $false
	$syncHash.Label.Dispatcher.Invoke('Background',
		[action]{ $syncHash.Label.Content = 'Do long Job' }
	)

	do {
		$syncHash.MyValue++
		if ($syncHash.MyValue -gt 100) {
			$exiting = $true
		}
		$syncHash.Progress.Dispatcher.Invoke('Background',
   			[action]{ $syncHash.Progress.Value = $syncHash.MyValue }
		)
		Start-Sleep -MilliSeconds 100
	} until ($exiting)
	$syncHash.Label.Dispatcher.Invoke('Background',
		[action]{ $syncHash.Label.Content = 'Job Done' }
	)
	$syncHash.Button.Dispatcher.Invoke('Background',
		[action]{ $syncHash.Button.IsEnabled = $true }
	)
}
#endregion

#region UI actions
$syncHash.Button.Add_Click({
	if ($SyncHash.LongJob -eq $null -or $SyncHash.LongJob.State -eq 'Completed') {
		# New Job
		$SyncHash.MyValue = 0
		$SyncHash.Progress.Value = 0
		$SyncHash.LongJob = Start-RSJob $LongJobScriptBlock -ArgumentList $SyncHash
		$SyncHash.Button.IsEnabled = $false   
	}
})
#endregion

[void]$SyncHash.Window.Dispatcher.InvokeAsync{$SyncHash.Window.ShowDialog()}.Wait()

　
#endregion
}).BeginInvoke()
#[void]$syncHash.Window.ShowDialog()