Powershell GUI - Label hilfe

Add-Type -AssemblyName PresentationFramework
[string]$DrawingLibrary = "System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"  
[System.Reflection.Assembly]::Load($DrawingLibrary) | Out-Null

[xml]$mainWindow = @"  
<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"  
        Title="MainWindow"   
        Width="300"  
        WindowStyle="None"  
        WindowStartupLocation="CenterScreen"  
        SizeToContent="Height"  
        Topmost="True"  
        DataContext="{Binding RelativeSource={RelativeSource Mode=Self}}">  

    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="1*"/>  
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="8"/>  
            <ColumnDefinition/>
            <ColumnDefinition Width="8"/>  
        </Grid.ColumnDefinitions>

        <StackPanel

           Orientation="Vertical"  
            Grid.Row="1"  
            Grid.Column="1" >  
            
            <DockPanel
                VerticalAlignment="Bottom"  
                HorizontalAlignment="Right"  
                Height="20">  

                <Button
                    x:Name="btn_END"  
                    Content="  X  " />  

            </DockPanel>

            <Separator Background="Transparent" Height="4" />  

            <TextBlock 
                    x:Name="lbl_GivenName"   
                    Text="search by GivenName:" />  

            <Separator Background="Transparent" Height="4" />  

            <TextBox 
                    x:Name ="txt_GivenName"   
                    TextWrapping="Wrap"  
                    Text="" />  

            <Separator Background="Transparent" Height="4" />  

            <TextBlock 
                    x:Name="lbl_SamAccountName"   
                    Text="search by SamAccountName:" />  

            <Separator Background="Transparent" Height="4" />  

            <TextBox 
                    x:Name="txt_SamAccountName"   
                    TextWrapping="Wrap"   
                    Text="" />  

            <Separator Background="Transparent" Height="4" />  
            
            <TextBlock
                x:Name="lbl_Result"  
                Text="no results"  
                Foreground="Green"  
                FontWeight="Bold">  
                
            </TextBlock>

            <Separator Background="Transparent" Height="8" />  

            <Button 
                x:Name="btn_GO"   
                Content="LOS"   
                Width="80" />  

            <Separator Background="Transparent" Height="10" />  

        </StackPanel>
    </Grid>
</Window>
"@  

Function Get-Data()
{
    if( ![string]::IsNullOrEmpty($txt_GivenName.Text))
    {
        $result = Get-AdUser -Filter "GivenName -like $([char]39)$($txt_GivenName.Text)$([char]39)" -Properties *    
    }
    elseif( ![string]::IsNullOrEmpty($txt_SamAccountName.Text))
    {
        $result = Get-AdUser -Filter "SamAccountName -like $([char]39)$($txt_SamAccountName.Text)$([char]39)" -Properties Name*    
    }
    
    $lbl_Result.text = [string]::Empty;

    $lbl_Result.text += 
        "Description: $($result.Description + [environment]::NewLine)" + `  
        "GivenName: $($result.GivenName + [environment]::NewLine)" + `  
        "DisplayName: $($result.DisplayName + [environment]::NewLine)" + `  
        "City: $($result.City + [environment]::NewLine)" + `  
        "co: $($result.co + [environment]::NewLine)" + `  
        "Name: $($result.Name + [environment]::NewLine)" + `  
        "wWWHomePage: $($result.wWWHomePage + [environment]::NewLine)"  


}


$Window = [Windows.Markup.XamlReader]::Load((new-object System.Xml.XmlNodeReader $mainWindow))

$txt_GivenName      = $Window.FindName("txt_GivenName")  
$txt_SamAccountName = $Window.FindName("txt_SamAccountName")  
$lbl_Result         = $Window.FindName("lbl_Result")  



$btn_END = $Window.FindName("btn_END")  
$btn_END.Add_Click({ $Window.Close() })

$btn_GO = $Window.FindName("btn_GO")  
$btn_GO.Add_Click( {Get-Data} )

$Window.Add_MouseLeftButtonDown( {$This.DragMove()})

$Window.ShowDialog() | Out-Null