Powershell GUI 标签更改

Question

I am building a GUI in powershell using XAML. I will be updating the gui label/text with text of what is happening in the program.

for($i in $array){
  if $i -eq "item"{
   add item to matcharray
  }
}

Example taking this piece of code searching for matches in an array. The GUI would have its label say "searching array for matches". Then when it goes to another part of the code such as doing some math functions. The GUI would say "Doing math functions" So far I can have the GUI update with a button click but I want it to update once that piece of code is being executed. At the very least have it update on a timer. I am looking for a way to change the label text automatically. Just a small piece of code of changing a label automatically would help.

Answer 1

This is actually very simple with a bit of code here. https://foxdeploy.com/functions/ise-snippets/xaml-to-gui/

You use the function to bind the WFP object to a Powershell one, and update it accordingly.

$inputXML = @"
XAML
"@       

$inputXML = $inputXML -replace 'mc:Ignorable="d"','' -replace "x:N",'N'  -replace '^<Win.*', '<Window'

[void][System.Reflection.Assembly]::LoadWithPartialName('presentationframework')
[xml]$XAML = $inputXML

$reader=(New-Object System.Xml.XmlNodeReader $xaml)
try {
    $Form=[Windows.Markup.XamlReader]::Load( $reader )
} catch { 
    Write-Host "Unable to load Windows.Markup.XamlReader. Double-check syntax and ensure .net is installed."
}

$xaml.SelectNodes("//*[@Name]") | %{Set-Variable -Name "WPF$($_.Name)" -Value $Form.FindName($_.Name)}

Function Get-FormVariables
{
    if ($global:ReadmeDisplay -ne $true) {
        Write-host "If you need to reference this display again, run Get-FormVariables" -ForegroundColor Yellow; $global:ReadmeDisplay=$true
    }
    write-host "Found the following interactable elements from our form" -ForegroundColor Cyan
    get-variable WPF*
}

Get-FormVariables

#Updates the XAML thing named "label1"
$WPFlabel1.Text = "This is the starting value!"

$WPFbutton1.Add_Click({
$WPFlabel1.Text = "This is the updated value!"
})
$Form.ShowDialog() | out-null

You would just have your code inside Add_Click, and place the updated text wherever you wanted it to occur. On a timer, etc.

Answer 2

Have you tried something like this?

$Label.Text = "Whatever you want your label to say here"

You can add that to wherever you would like it to run in your code, multiple times if needed.