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wpfmultithreadingpowershellstart-job

Powershell - updating textbox from start-job

I've been working on moving over a WPF program I wrote in C# over to PowerShell, and I'm having a little issue with appending text in my RichTextBox from Start-Job It looks like I can call the Set-RichTextBox where ever, except for inside the scriptblock. Is there a workaround?

#outside the ScriptBlock
Set-RichTextBox -message "This does work"
#outside the ScriptBlock

$job = Start-Job -ScriptBlock {

function Set-RichTextBox
{
  param (
     [System.String]
     $message
  )
     $richTextBox1.Dispatcher.invoke([action]{       
     $richTextBox1.AppendText($message)      
     },"Normal")
 }

  Set-RichTextBox -message "This doesn't work"
  }

I can call RichTextBox anywhere except for within the Start-Job, I do not get any error messages. Any idea what I'm doing wrong here?

Solution

  • to me it seems it works:

    Remove-Job *

$job = Start-Job -Name Test -ScriptBlock {

    function Set-RichTextBox
    {
        param ([string]$message)

        $message
    }

    Set-RichTextBox -message "This should work..."
}

Start-Sleep 5
Get-Job |Where-Object {$PSItem.Name -eq "Test"} |Receive-Job

    you might wanna have a look at: PowerShell: Creating Custom Objects

    also these may or may not be related: