加载程序集与按计划任务运行不兼容？

Question

我正在尝试建立一个由预定任务启动的消息传递系统，最终将允许我在触发软件更新作业之前向用户发送消息。

我已经让UserMessage脚本基本正常工作了……

class PxMessage {

    static [PxMessage] $instance
    static [windows.forms.notifyIcon] $balloon
    static [drawing.icon] $defaultIcon

    static [PxMessage] GetInstance($processID) {
        if ([PxMessage]::instance -eq $null) {
            [PxMessage]::instance = [PxMessage]::new()
            #[void][reflection.assembly]::LoadWithPartialName('Windows.Forms')

            [PxMessage]::balloon = [windows.forms.notifyIcon]::New()
            [PxMessage]::defaultIcon = [drawing.icon]::ExtractAssociatedIcon($(Get-Process -id:$processID | Select-Object -expandProperty:path))
        }
        return [PxMessage]::instance
    }

    [Void] SendMessage ([String]$title, [String]$message, [String]$messageIcon, [String]$icon) {
        if ($icon) {
            [PxMessage]::balloon.icon = [drawing.icon]::ExtractAssociatedIcon($icon) # must be a local path
        } else {
            [PxMessage]::balloon.icon = [PxMessage]::defaultIcon
        }
        [PxMessage]::balloon.balloonTipTitle = $title
        [PxMessage]::balloon.balloonTipText = $message
        [PxMessage]::balloon.balloonTipIcon = $messageIcon
        [PxMessage]::balloon.visible = $true 
        [PxMessage]::balloon.ShowBalloonTip(0)
        [void][PxMessage]::balloon.Dispose
    }
}

$message = [PxMessage]::GetInstance($pid)
$message.SendMessage('Title', 'Message', 'Info', 'C:\PxIcon.ico')

这在ISE中运行时有效，并且当我使用& "\\Mac\iCloud Drive\Px Tools\Dev 4.0\#Spikes\ScheduledTasks\UserMessage.ps1"从另一个脚本在控制台中运行它时也有效。

但是，当我像这样设置一个计划任务时...

$runTime = (get-Date) + (New-TimeSpan -seconds:1)
$action = New-ScheduledTaskAction -execute:'powershell.exe' -argument:'-NonInteractive -NoLogo -NoProfile -noExit -executionPolicy Bypass -File "\\Mac\iCloud Drive\Px Tools\Dev 4.0\#Spikes\ScheduledTasks\UserMessage_class.ps1"'
$trigger = New-ScheduledTaskTrigger -once -at:$runTime
$settings = New-ScheduledTaskSettingsSet
$task = New-ScheduledTask -action:$action -trigger:$trigger -settings:$settings
Register-ScheduledTask -taskName:'Px Tools' -inputObject:$task

我收到错误消息Unable to find type [Windows.Forms.NotifyIcon].是否与计划任务发生了一些交互，从而导致加载程序集出现问题？

我知道[reflection.assembly]::LoadWithPartialName已经被弃用了，我找到了this，它概述了一些选项。我尝试了[reflection.assembly]::LoadFrom("C:/Windows/Microsoft.Net/assembly/GAC_MSIL/System.Windows.Forms/v4.0_4.0.0.0__b77a5c561934e089/System.Windows.Forms.dll")，结果是一样的。

Answer 1

你是这样load the assemblies的吗：

[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing") 
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")

或作为indicated here

Add-Type -AssemblyName System.Windows.Forms