所需的关键变革包括：

• 不要直接从.add_Click()事件处理程序脚本块调用exit：会让你的剧本崩溃的。
• 下面的代码还将$notifyIcon.Dispose()移出此脚本块，并将其移入try语句的finally块，该语句 Package while循环，并通过脚本级$done变量通知循环希望退出，该变量通过事件处理程序（在脚本的 child 作用域中运行）中的$script:done = $true设置。
• 这可确保使用Ctrl-C终止脚本时也能正确处理图标并将其从通知区域中删除。
  *在while循环中，您必须定期调用[System.Windows.Forms.Application]::DoEvents()，以便WinForms处理其UI事件。在这些调用之间仅休眠一个 * 短 * while，以便保持UI响应-长时间休眠将在休眠期间阻止事件处理。

# Load the WinForms assembly.
Add-Type -AssemblyName System.Windows.Forms

$iconPath = "H:\Dropbox\400 - Scriptprogrammierung\Powershell\Taskleiste mit Wochentag\icons\ico\Logo.ico" # icon path
$tooltip = "This is a text."

# NotifyIcon-object
$notifyIcon = New-Object System.Windows.Forms.NotifyIcon
$notifyIcon.Icon = [System.Drawing.Icon]::ExtractAssociatedIcon($iconPath)
$notifyIcon.Text = $tooltip

# Define a script-level variable that indicates whether the
# script should be exited, to be set to $true from the .add_Click() event handler.
$done = $false

$contextMenu = New-Object System.Windows.Forms.ContextMenuStrip
$menuItemExit = New-Object System.Windows.Forms.ToolStripMenuItem
$menuItemExit.Text = "Quit."
$null = $contextMenu.Items.Add($menuItemExit)
$notifyIcon.ContextMenuStrip = $contextMenu
# Set the script-level $done variable to $true when the menu item is clicked.
$menuItemExit.add_Click({ $script:done = $true })

# Show icon in systray (notification area)
$notifyIcon.Visible = $true

Write-Verbose -Verbose @"
Adding icon to notification area (system tray).
Use the icon's context menu to quit this script, 
or press Ctrl-C in the console window.
"@

# Loop
try {
  while (-not $done) {
      # IMPORTANT: Make WinForms process its events.
      [System.Windows.Forms.Application]::DoEvents()
      # Sleep just a little, to keep the UI responsive.
      Start-Sleep -MilliSeconds 100
  }
}
finally {
  $notifyIcon.Dispose()
}