Forms.TextBox in PowerShell passes technical information, how to pass text?

Question

PowerShell

Hello.

I'm trying to write a small script to send messages to users on the local network.

But for some reason, technical information is transmitted from the TextBox along with the entered text.

Any ideas how to fix it?

$ErrorActionPreference = "silentlycontinue"

# Подключаем то, с помощью чего будем рисовать нашу форму
Add-Type -assembly System.Windows.Forms

$mainWindow = New-Object System.Windows.Forms.Form
$mainWindow.Width = 400
$mainWindow.Height = 400

$proverka = New-Object System.Windows.Forms.TextBox
$proverka.Location = New-Object System.Drawing.Point(20,50)
$proverka.Size = New-Object System.Drawing.Size(150,20)
$proverka.Text = "Проверка"
$mainWindow.Controls.Add($proverka)

$button = New-Object System.Windows.Forms.Button
$button.Location = New-Object System.Drawing.Point(20,70)
$button.Size = New-Object System.Drawing.Size(150,20)
$button.Text = "Отправить"
$mainWindow.Controls.Add($button)

$button.Add_Click({
    $request = $proverka.Text
    c:\windows\system32\msg.exe * /Server:localhost $proverka
})



$mainWindow.ShowDialog()

An allegedly ready-made script is walking on the Internet, do not give a link, it is not working.

Answer 1

c:\windows\system32\msg.exe * /Server:localhost $proverka
should be:
c:\windows\system32\msg.exe * /Server:localhost $request
or
c:\windows\system32\msg.exe * / Server:localhost $proverka.text