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$window = Add-Type -memberDefinition @"  
[DllImport("user32.dll")]  
public static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);
"@ -name "Win32ShowWindowAsync" -namespace Win32Functions -passThru  
$window::ShowWindow((Get-Process –id $pid).MainWindowHandle, 0) 


Add-Type -AssemblyName PresentationFramework, System.Drawing, System.Windows.Forms
[void][System.Reflection.Assembly]::LoadWithPartialName('presentationframework')  
[xml]$XAML = @'  
<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"  
        xmlns:local="clr-namespace:WpfApp3"  
        Name="window" WindowStyle="None" Width="513" Height="250" Opacity="1.0" AllowsTransparency="False">  
        <Window.Resources>
        <Style TargetType="GridViewColumnHeader">  
            <Setter Property="Background" Value="Black" />  
            <Setter Property="Foreground" Value="White"/>  
            <Setter Property="BorderBrush" Value="Black"/>  
            <Setter Property="FontWeight" Value="Bold"/>  
            <Setter Property="Opacity" Value="1.0"/>  
            <Setter Property="Template">  
                <Setter.Value>
                    <ControlTemplate TargetType="GridViewColumnHeader">  
                    <Border Background="White">  
                    <ContentPresenter></ContentPresenter>
                    </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        </Window.Resources>
    <Grid Name="grid" Height="270" HorizontalAlignment="Left" VerticalAlignment="Top">  
	
	
        <Label Name="Title" Content="COMPUTER INFORMATION" HorizontalAlignment="Left" VerticalAlignment="Top" Width="513" Background="Red" Foreground="White" FontWeight="Bold" FontSize="16" Height="27"/>  
		
        <Label Content="Computername" HorizontalAlignment="Left" Margin="0,27,0,0" VerticalAlignment="Top" Height="30" Width="170" Background="Red" Foreground="White" FontSize="14"/>  
		<Label Content="Ethernet IP Addresse" HorizontalAlignment="Left" Margin="0,57,0,0" VerticalAlignment="Top" Height="30" Width="170" Background="Red" Foreground="White" FontSize="14"/>  
		<Label Content="WLAN IP Addresse" HorizontalAlignment="Left" Margin="0,87,0,0" VerticalAlignment="Top" Height="30" Width="170" Background="Red" Foreground="White" FontSize="14"/>  
		<Label Content="VPN IP Addresse" HorizontalAlignment="Left" Margin="0,117,0,0" VerticalAlignment="Top" Height="30" Width="170" Background="Red" Foreground="White" FontSize="14"/>  
		<Label Content="Domain" HorizontalAlignment="Left" Margin="0,147,0,0" VerticalAlignment="Top" Height="30" Width="170" Background="Red" Foreground="White" FontSize="14"/>  
		<Label Content="Benutzername" HorizontalAlignment="Left" Margin="0,177,0,0" VerticalAlignment="Top" Height="30" Width="170" Background="Red" Foreground="White" FontSize="14"/>  
		<Label Content="Betriebssystem" HorizontalAlignment="Left" Margin="0,207,0,0" VerticalAlignment="Top" Height="30" Width="170" Background="Red" Foreground="White" FontSize="14"/>		  
		
        <TextBox Name="txtHostName" Height="30" Margin="170,27,50,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" IsEnabled="True" AllowDrop="True" BorderThickness="0.5" HorizontalAlignment="Left" Width="343" FontSize="14"/>  
		<TextBox Name="txtEthernetIP" HorizontalAlignment="Left" Height="30" Margin="170,57,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="343" IsEnabled="True" BorderThickness="0.5" FontSize="14"/>  
		<TextBox Name="txtWLANIP" HorizontalAlignment="Left" Height="30" Margin="170,87,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="343" IsEnabled="True" BorderThickness="0.5" FontSize="14"/>  
		<TextBox Name="txtVPNIP" HorizontalAlignment="Left" Height="30" Margin="170,117,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="343" IsEnabled="True" BorderThickness="0.5" FontSize="14"/>  
		<TextBox Name="txtDomain" HorizontalAlignment="Left" Height="30" Margin="170,147,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="343" IsEnabled="True" BorderThickness="0.5" FontSize="14"/>  
		<TextBox Name="txtUsername" HorizontalAlignment="Left" Height="30" Margin="170,177,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="343" IsEnabled="True" BorderThickness="0.5" FontSize="14"/>  
		<TextBox Name="txtOSName" HorizontalAlignment="Left" Height="30" Margin="170,207,0,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" Width="343" IsEnabled="True" BorderThickness="0.5" FontSize="14"/>  
	
            <ListView Name="listview" SelectionMode="Single" Foreground="White" Background="Transparent" BorderBrush="Transparent" IsHitTestVisible="False">   
                <ListView.ItemContainerStyle>
                    <Style>
                        <Setter Property="Control.HorizontalContentAlignment" Value="Stretch"/>  
                        <Setter Property="Control.VerticalContentAlignment" Value="Stretch"/>  
                    </Style>
                </ListView.ItemContainerStyle>
            </ListView>
    </Grid>
</Window>
'@  


$reader=(New-Object System.Xml.XmlNodeReader $xaml) 
try{$Form=[Windows.Markup.XamlReader]::Load( $reader )}
catch{Write-Host "Unable to load Windows.Markup.XamlReader. Some possible causes for this problem include: .NET Framework is missing PowerShell must be launched with PowerShell -sta, invalid XAML code was encountered."; exit}  

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

Function RefreshData{

$oWMIOS = @()
$oWMIHD = @()
$oWMINIC = @()
$oWMICPU = @()
$oWMIOS = Get-WmiObject win32_OperatingSystem
$oWMIHD = Get-WmiObject Win32_Volume -Filter "DriveType='3'"  
$oWMINIC = Get-WmiObject Win32_NetworkAdapterConfiguration | where Description -Like '*Ethernet*' | Select -Expand IPAddress | Where { $_ -like '1*' }  
$oVPN = Get-WmiObject Win32_NetworkAdapterConfiguration | where Description -Like '*Cisco*' | Select -Expand IPAddress | Where { $_ -like '1*' }  
$oWLAN = Get-WmiObject Win32_NetworkAdapterConfiguration | where Description -Like '*Wireless*' | Select -Expand IPAddress | Where { $_ -like '1*' }  
$oWMICPU = Get-WmiObject win32_processor | select Name, LoadPercentage


$txtUsername.Text = $env:UserName
$txtDomain.Text = $env:USERDNSDOMAIN
$txtHostName.Text = $oWMIOS.PSComputerName


$aOSName = $oWMIOS.name.Split("|")  
$txtOSName.Text = $aOSName


$txtEthernetIP.Text = $oWMINIC 
$txtWLANIP.Text = $oWLAN
$txtVPNIP.Text = $oVPN

}


$icon = [System.Drawing.Icon]::ExtractAssociatedIcon("C:\Windows\System32\SystemSettingsBroker.exe")  


$listview.ItemsSource = $disks
$listview.Width = $grid.width*.9 


$gridview = New-Object System.Windows.Controls.GridView 
 

foreach ($column in $columnorder) { 
    $gridcolumn = New-Object System.Windows.Controls.GridViewColumn 
    $gridcolumn.Header = $column 
    $gridcolumn.Width = $grid.width*.20 
    $gridbinding = New-Object System.Windows.Data.Binding $column 
    $gridcolumn.DisplayMemberBinding = $gridbinding 
    $gridview.AddChild($gridcolumn) 
} 
 

$listview.View = $gridview 
 

$notifyicon = New-Object System.Windows.Forms.NotifyIcon 
$notifyicon.Text = "Systeminformation"   
$notifyicon.Icon = $icon 
$notifyicon.Visible = $true 
 
$menuitem = New-Object System.Windows.Forms.MenuItem 
$menuitem.Text = "Beenden"   

$contextmenu = New-Object System.Windows.Forms.ContextMenu 
$notifyicon.ContextMenu = $contextmenu 
$notifyicon.contextMenu.MenuItems.AddRange($menuitem) 
 

$notifyicon.add_Click({ 
    if ($_.Button -eq [Windows.Forms.MouseButtons]::Left) { 
            # reposition each time, in case the resolution or monitor changes 
	    $window.Left = $([System.Windows.SystemParameters]::WorkArea.Width-$window.Width) 
            $window.Top = $([System.Windows.SystemParameters]::WorkArea.Height-$window.Height) 
            $window.Show() 
            $window.Activate()
    	    RefreshData
    } 
}) 
 
 
$window.Add_MouseDoubleClick({ 
    RefreshData
}) 
 

$window.Add_Deactivated({ 
    $window.Hide()
}) 
 

$menuitem.add_Click({ 
   $notifyicon.Visible = $false 
   $window.close() 
   Stop-Process $pid 
}) 
 

$windowcode = '[DllImport("user32.dll")] public static extern bool ShowWindowAsync(IntPtr hWnd, int nCmdShow);'   
$asyncwindow = Add-Type -MemberDefinition $windowcode -name Win32ShowWindowAsync -namespace Win32Functions -PassThru
$null = $asyncwindow::ShowWindowAsync((Get-Process -PID $pid).MainWindowHandle, 0) 
 
Force garbage collection just to start slightly lower RAM usage. 
[System.GC]::Collect() 
 
Create an application context for it to all run within. 
This helps with responsiveness, especially when clicking Exit. 
$appContext = New-Object System.Windows.Forms.ApplicationContext 
[void][System.Windows.Forms.Application]::Run($appContext)