trim() 不适用于许可证密钥工具

Question

PS 个人技能水平：低（学生）

目标： 尝试查找 Windows 10 许可证密钥，将其显示在窗口中并自动将其复制到剪贴板。

问题： 我的输出总是在字符串的开头和结尾产生空格。我已经尝试过 trim()、trimstart() 等。到目前为止没有任何效果。我不会介意空格然后用剪贴板的键保存 - 使功能有点无用，或者至少很乏味。

我在代码中列出了一些符号来识别问题。

代码（结果如下）：

    Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing
[void][reflection.assembly]::Load("System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089")

#Obtain Windows 10 Key
$License = wmic path SoftwareLicensingService get OA3xOriginalProductKey

# FAULT - Used to trim key 
$Result = $License.Trim("OA3xOriginalProductKey")

#Used to isolate the spaces in the result. Attempt to see if the spaces occur after the trim, or during the trim.
#The spaces are within the "|" rather than outside of the "|" - meaning that the Trim() is not working properly.
#PLEASE HELP!
$Result = "|" + $Result.Trim() + "|"

#Used to copy key to clipboard
$Result | clip.exe


$form = New-Object System.Windows.Forms.Form 
$form.Text = "KeySniffer 1.0"
$form.Size = New-Object System.Drawing.Size(280,140) 
$form.StartPosition = "CenterScreen"

$OKButton = New-Object System.Windows.Forms.Button
$OKButton.Location = New-Object System.Drawing.Point(30,70)
$OKButton.Size = New-Object System.Drawing.Size(60,23)
$OKButton.Text = "OK"
$OKButton.DialogResult = [System.Windows.Forms.DialogResult]::OK
$form.AcceptButton = $OKButton
$form.Controls.Add($OKButton)

$label = New-Object System.Windows.Forms.Label
$label.Location = New-Object System.Drawing.Point(10,20) 
$label.Size = New-Object System.Drawing.Size(280,20) 
$label.Text = "Key has been copied to clipboard"
$form.Controls.Add($label) 

$textBox = New-Object System.Windows.Forms.TextBox
#Put a trim here as a desperate swing in the dark
#The "-" indicate that the spaces occur within the "$Result"
$textBox.Text = "-" + $Result.Trim() + "-"
$textBox.Location = New-Object System.Drawing.Point(10,40) 
$textBox.Size = New-Object System.Drawing.Size(200,20) 
$form.Controls.Add($textBox) 

$form.Topmost = $True

$form.Add_Shown({$textBox.Select()})
$result = $form.ShowDialog()

if ($result -eq [System.Windows.Forms.DialogResult]::OK)
{
    $x = $textBox.Text
    $x
}

结果：

-|  ****-*****-*****-*****-*****   |-

Answer 1

看来你已经用这个去掉了你不想要的文字

$Result = $License.Trim("OA3xOriginalProductKey")

现在让我们尝试只保留我们想要的内容，方法是设计一个模式，只保留数字、大写字符和“-”。另外，我们需要删除多余的行。

$pattern = '[^0-9A-Z-]'
$Result = ($Result -replace $pattern, '').trim() -ne ""

现在您可以查看结果了，所有不需要的东西都应该消失了

$Result = "|" + $Result + "|"
$Result