文件夹选择器未在 ISE 外部加载

Question

我有一个以文件夹选择器对话框开头的脚本，但是我知道 POSH 不能像那样在 ISE 之外执行脚本（STA 与 MTA），所以我有一个单独的脚本来点源它。

如果用户按下取消，我会在第一个脚本中处理错误：

if ($Show -eq "OK") {
    return $objForm.SelectedPath
} else {
    Write-Error "Operation cancelled by user."
    exit
}

现在我需要第二个脚本（调用第一个脚本的那个）来检测相同的取消。

这是我目前所得到的：

"Choose a folder containing the items to be moved..."
""
try {
    powershell -STA -File "C:\Test\Script.ps1"
    ""
    "Operation completed. An event log has been created:"
    (Resolve-Path .\).Path +"\log.txt"
    ""
    "Press any key to continue..."
    ""
    $x = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
} catch {
    if ($LastExitCode -ne 0) { exit $LastExitCode }
    Write-Host "User cancelled the operation."
    ""
    "Press any key to continue..."
    ""
    $x = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
}

这给了我一个令人讨厌的红色文本多行写入错误异常。

在 C:\Test\Script.ps1:27 char:30 + $folder = Select-FolderDialog

我不确定为什么它会生成引用另一个脚本的错误消息，因为另一个脚本运行良好（当然来自 ISE）。

所需的输出：

如果用户取消文件夹选择器，我只想显示一条干净整洁的错误消息：

用户取消了操作。
按任意键继续。

编辑

这是我拥有的文件夹选择器脚本。它在 ISE 中运行良好，但是当您右键单击并选择使用 Powershell 运行时，它只会启动一个空白提示窗口。为了防止最终用户意外编辑脚本，我希望它从 ISE 外部运行。顺便说一句，我正在使用 POSH 2。

 # Function for folder picker dialog
Function Select-FolderDialog
{
[System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms") | Out-Null     

$objForm = New-Object System.Windows.Forms.FolderBrowserDialog
# Default location is script's location
$objForm.SelectedPath = (Resolve-Path .\).Path
$objForm.Description = "Select Folder"
$Show = $objForm.ShowDialog()
If ($Show -eq "OK")
{Return $objForm.SelectedPath}
    Else
    {
    Write-Error "Operation cancelled by user."
    Exit
    }
}
$folder = Select-FolderDialog #contains user's selected folder

Answer 1

仅将您的函数保留在您的第二个脚本中，点源文件以加载该函数，然后将 $folder = Select-FolderDialog 调用放在您的主脚本中，例如：

"Choose a folder containing the items to be moved..."
""
try {
    . "C:\Test\Script.ps1" # this dot sources the function from the second file (no need to call a separate Powershell process to do this, as data from that process won't be returned to the primary process calling it)

    $folder = Select-FolderDialog # this runs the function in your original script, storing the result in the $folder variable

    ""
    "Operation completed. An event log has been created:"
    (Resolve-Path .\).Path +"\log.txt"
    ""
    "Press any key to continue..."
    ""
    $x = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
} catch {
    if ($LastExitCode -ne 0) { exit $LastExitCode }
    Write-Host "User cancelled the operation."
    ""
    "Press any key to continue..."
    ""
    $x = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
}