Powershell Script Fehler und Bitte Warten Dialog

faerb : Die Benennung "faerb" wurde nicht als Name eines Cmdlet, einer Funktion, einer Skriptdatei oder eines ausführbaren Programms erkannt. Überprüfen Sie die Schreibweise des Namens,   
oder ob der Pfad korrekt ist (sofern enthalten), und wiederholen Sie den Vorgang.
In C:\scripte\Toogle Network.ps1:109 Zeichen:1
+ faerb
+ ~~~~~
    + CategoryInfo          : ObjectNotFound: (faerb:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException
 

Add-Type -AssemblyName System.Windows.Forms

$adapter1 = "Ethernet 4"  
$adapter2 = "WLAN"  
$buttonfont = "Arial Narrow"  
$buttonfontsize = 11

# Erstellen eines neuen Formulars
$form = New-Object System.Windows.Forms.Form
$form.Text = "NetAdapter-Tool"  
$form.Size = New-Object System.Drawing.Size(300,300)
$form.StartPosition = "CenterScreen"  
$form.FormBorderStyle = "FixedDialog"  

# Erstellen der Buttons
$button1 = New-Object System.Windows.Forms.Button
$button1.Font = New-Object System.Drawing.Font($buttonfont,$buttonfontsize,[System.Drawing.FontStyle]::Bold)
$button1.Forecolor = 'White'  
$button1.Location = New-Object System.Drawing.Point(50,30)
$button1.Size = New-Object System.Drawing.Size(200,30)
$button1.Text = "LAN AN/AUS"  
$button1.Add_Click({

    $inputStr = netsh interface show interface $adapter1
    $bspStr =  $inputStr -match "aktiviert"  

        If ($bspStr -like "*Aktiviert*" -and $bspStr -notlike "*Deaktiviert*" )  
        {
        netsh interface set interface $adapter1 admin=disable
        write-Host "LAN wurde deaktiviert."  
        } else {
        netsh interface set interface $adapter1 admin=enable
        Write-Host "LAN wurde aktiviert."  
        }
Start-Sleep -Seconds 4
    faerb

})

$button2 = New-Object System.Windows.Forms.Button
$button2.Font = New-Object System.Drawing.Font($buttonfont,$buttonfontsize,[System.Drawing.FontStyle]::Bold)
$button2.Location = New-Object System.Drawing.Point(50,70)
$button2.Forecolor = 'White'  
$button2.Size = New-Object System.Drawing.Size(200,30)
$button2.Text = "WLAN AN/AUS"  
$button2.Add_Click({

    $inputStr = netsh interface show interface $adapter2
    $bspStr =  $inputStr -match "aktiviert"  

    If ($bspStr -like "*Aktiviert*" -and $bspStr -notlike "*Deaktiviert*" ) {  
        netsh interface set interface $adapter2 admin=disable
        Write-Host "WLAN wurde deaktiviert."  
    } else {
        netsh interface set interface $adapter2 admin=enable
        Write-Host "WLAN wurde aktiviert."  
    }

    Start-Sleep -Seconds 4
    faerb
})

$button3 = New-Object System.Windows.Forms.Button
$button3.Font = New-Object System.Drawing.Font($buttonfont,$buttonfontsize,[System.Drawing.FontStyle]::Bold)
$button3.Location = New-Object System.Drawing.Point(50,110)
$button3.Forecolor = 'White'  
$button3.Size = New-Object System.Drawing.Size(200,30)
$button3.Text = "LAN aus WLAN an"  
$button3.Add_Click({
    netsh interface set interface $adapter1 admin=disable
    netsh interface set interface $adapter2 admin=enable
    Write-Host "Lan wurde deaktiviert & WLAN aktiviert."  
Start-Sleep -Seconds 4
    faerb
})

$button4 = New-Object System.Windows.Forms.Button
$button4.Font = New-Object System.Drawing.Font($buttonfont,$buttonfontsize,[System.Drawing.FontStyle]::Bold)
$button4.Location = New-Object System.Drawing.Point(50,150)
$button4.Forecolor = 'White'  
$button4.Size = New-Object System.Drawing.Size(200,30)
$button4.Text = "WLAN aus LAN an"  
$button4.Add_Click({
    netsh interface set interface $adapter1 admin=enable
    netsh interface set interface $adapter2 admin=disable
    Write-Host "Lan wurde aktiviert & WLAN deaktiviert."  
Start-Sleep -Seconds 4
    faerb
})


$button5 = New-Object System.Windows.Forms.Button
$button5.Font = New-Object System.Drawing.Font($buttonfont,$buttonfontsize,[System.Drawing.FontStyle]::Bold)
$button5.Location = New-Object System.Drawing.Point(50,190)
$button5.Forecolor = 'White'  
$button5.Size = New-Object System.Drawing.Size(200,30)
$button5.Text = "Färben"  
$button5.BackColor = 'Goldenrod'  
$button5.Add_Click({
    faerb
})

# Hinzufügen der Buttons zum Formular
$form.Controls.Add($button1)
$form.Controls.Add($button2)
$form.Controls.Add($button3)
$form.Controls.Add($button4)
$form.Controls.Add($button5)
faerb

function faerb
{

$adapterstat1 = Get-NetAdapter -Name $adapter1
$adapterstat2 = Get-NetAdapter -Name $adapter2
Write-Host $adapterstat1.Status
Write-Host $adapterstat2.Status


            If ($($adapterstat1.Status) -ne "Disabled")  
            {
            $button1.BackColor = 'DarkGreen'  
            } else {
            $button1.BackColor = 'DarkRed'  
            }


            If ($($adapterstat2.Status) -ne "Disabled")  
            {
            $button2.BackColor = 'DarkGreen'  
            } else {
            $button2.BackColor = 'DarkRed'  
            }

           
            If ($($adapterstat2.Status) -ne "Disabled" -and ($($adapterstat1.Status) -eq "Disabled"))   
            {
            $button3.BackColor = 'DarkGreen'  
            } else {
            $button3.BackColor = 'DarkRed'  
            }


            If ($($adapterstat1.Status) -ne "Disabled" -and ($($adapterstat2.Status) -eq "Disabled"))   
            {
            $button4.BackColor = 'DarkGreen'  
            } else {
            $button4.BackColor = 'DarkRed'  
            }
}


# Anzeigen des Formulars
$form.ShowDialog() | Out-Null