这可能是一个非常简单的问题,但我完全迷失了,寻找答案并没有帮助。
我有一些 powershell 代码来显示带有文本框的简单 GUI。 某些文本框允许用户按 Enter 键来运行 Button_Click 代码。 当我尝试运行 PS1 脚本时,出现以下错误:
Unable to find type [System.Windows.Forms.KeyEventHandler].
Make sure that the assembly that contains this type is loaded.At C:\Scripts\GUI-Testing.ps1:161 char:1
$TestVar=[System.Windows.Forms.KeyEventHandler]
CategoryInfo : InvalidOperation: (System.Windows.Forms.KeyEventHandler:TypeName)
FullyQualifiedErrorId : TypeNotFound
奇怪的是,如果我关闭 GUI 然后重新运行脚本,我不会收到
Unable to find type
错误,并且按 Enter 键可以按预期工作。
以为我有答案,我尝试使用
[void][reflection.assembly]::Load('System.Windows.Forms.KeyEventHandler')
,这给出了这个错误 Exception calling "Load" with "1" argument(s): "Could not load file or assembly 'System.Windows.Forms.KeyEventHandler' or one of its dependencies. [FileNotFoundException]
确保在脚本顶部加载以下程序集:
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
如果仍然不起作用,您可以执行以下操作:
$objForm.KeyPreview = $True
$objForm.Add_KeyDown({
if ($_.KeyCode -eq "Enter")
{
#Write Code Here
}
})
此代码打开记事本并输入“Hello”
[void][System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
[void][System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
add-type -AssemblyName microsoft.VisualBasic
add-type -AssemblyName System.Windows.Forms
Start-Process -FilePath "notepad.exe"
start-sleep -Milliseconds 500
[Microsoft.VisualBasic.Interaction]::AppActivate("Notepad")
start-sleep -Milliseconds 100
[System.Windows.Forms.SendKeys]::SendWait("+{h}")
start-sleep -Milliseconds 100
[System.Windows.Forms.SendKeys]::SendWait("{e}")
start-sleep -Milliseconds 100
[System.Windows.Forms.SendKeys]::SendWait("{l}")
start-sleep -Milliseconds 100
[System.Windows.Forms.SendKeys]::SendWait("{l}")
start-sleep -Milliseconds 100
[System.Windows.Forms.SendKeys]::SendWait("{o}")
start-sleep -Milliseconds 100
这是下面的另一个示例,没有显示任何内容 而是发送击键“ctrl+schft+alt+a”:
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
add-type -AssemblyName microsoft.VisualBasic
start-sleep -Milliseconds 2500
[System.Windows.Forms.SendKeys]::SendWait("(^+%{a})")
我无法让这些工作:
[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
,[reflection.assembly]::Load('System.Windows.Forms, Version=2.0.0.0, Culture=neutral')
Add-Type -AssemblyName 'System.Windows.Forms'
但是通过诉诸通配符路径搜索,我能够得到以下结果:
$framework = "C:\Windows\Microsoft.NET\Framework$(if([Environment]::Is64BitProcess){'64'})\v4.0.*";
[Reflection.Assembly]::LoadFrom(("$framework\System.Drawing.dll" | Resolve-Path).ToString())
[Reflection.Assembly]::LoadFrom(("$framework\System.Windows.Forms.dll" | Resolve-Path).ToString())
[Reflection.Assembly]::LoadFrom(("$framework\Microsoft.VisualBasic.dll" | Resolve-Path).ToString())
[Reflection.Assembly]::LoadFrom(("$framework\*\PresentationFramework.dll" | Resolve-Path).ToString())
将其添加到顶部对我有用
Add-Type -AssemblyName System.Windows.Forms