#ERASE ALL THIS AND PUT XAML BELOW between the @" "@
$inputXML = @"
<Window x:Class="WpfApplication2.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:WpfApplication2"
        mc:Ignorable="d"
        Title="Add-KayakoUser" Height="316.794" Width="656.637" Topmost="True" ShowInTaskbar="False">
    <Grid Margin="0,0,2,-45">
        <Button x:Name="button" Content="Organization ID's" HorizontalAlignment="Left" Height="35" Margin="378,129,0,0" VerticalAlignment="Top" Width="147" FontSize="18.667"/>
        <TextBox x:Name="textBox" HorizontalAlignment="Left" Height="35" Margin="190,129,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="168" FontSize="16"/>
        <Label x:Name="label" Content="Account" HorizontalAlignment="Left" Height="37" Margin="22,127,0,0" VerticalAlignment="Top" Width="148" FontSize="16"/>
        <Label x:Name="label1" Content="Label that has to change content" HorizontalAlignment="Left" Margin="22,186,0,0" VerticalAlignment="Top" Width="162"/>
        <TextBlock x:Name="textBlock" HorizontalAlignment="Left" Margin="22,10,0,0" TextWrapping="Wrap" Text="Created this just for testing purposes. One button that has to updae a label twice with 3 seconds in between" VerticalAlignment="Top" Height="112" Width="307"/>
    </Grid>
</Window>

"@

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

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

    $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."}

#===========================================================================
# Store Form Objects In PowerShell
#===========================================================================

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

#===========================================================================
# Actually make the objects work
#===========================================================================
$WPFbutton.Add_Click({

    $WPFlabel1.Content = " "
    $WPFlabel1."Getting data from AD..."
    $WPFlabel1.Refresh()
    Write-host "Updating Window"
    sleep 3
    $WPFlabel1.Content = "Succes, show results, lets go!"
    $WPFlabel1.Refresh()
    Write-host "Updating Window 2"

})

$Form.ShowDialog() | out-null