1RedOne

$inputXML = @"
<Window x:Class="FileVersionChecker.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:FileVersionChecker"
        mc:Ignorable="d"
        Title="FileVersionChecker" Height="350" Width="525">
    <Grid>

1RedOne

$keys = $PSCmdlet.MyInvocation.BoundParameters.Keys

foreach ($key in $keys)
{
    $keyValue = @{
        $true = ",$key"
        $false = "?patchFields=$key"
    }
    $queryParams += $keyValue.($PSCmdlet.MyInvocation.BoundParameters.ContainsKey($key))
}

1RedOne

#ERASE ALL THIS AND PUT XAML BELOW between the @" "@ 
$inputXML = @" 
<Window 
        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"
        
        mc:Ignorable="d"
        Title="Configuration Manager Content Import/Export" Height="564.345" Width="502.66"> 

1RedOne

<# 
.Synopsis
    Modifies the web.config file for all servers for specific SharePoint web application. 
    
.Description
    Modifies the web.config file for all servers for specific SharePoint web application. 
    
.Example
    Add-SPCORSOrigin -Url http://domain.com