PowerScript：System.Windows.Forms.FolderBrowserDialog在后台打开

如何解决PowerScript：System.Windows.Forms.FolderBrowserDialog在后台打开

PowerScript Noob在这里。

我找到了一段代码，该代码段使用户可以通过“文件夹浏览器”对话框选择一个文件夹，而不必手动输入该文件夹的路径。

可以正常工作，除了“文件夹浏览器”对话框通常会在屏幕上其他窗口的后面打开，这很烦人。

代码如下：

Function Get-Folder($initialDirectory)

{
    [System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms")|Out-Null

    $foldername = New-Object System.Windows.Forms.FolderbrowserDialog
    $foldername.Description = "Select a folder"
    $foldername.rootfolder = "MyComputer"
    $foldername.Selectedpath = $initialDirectory

    if($foldername.ShowDialog() -eq "OK")
    {
        $folder += $foldername.Selectedpath
    }
    return $folder
}

$FolderNavn = Get-Folder($startFolder)

如何获取“文件夹浏览器”对话框以在所有其他Windows的“顶部”打开？

谢谢。

解决方法

要设置BrowseForFolder对话框TopMost，您需要使用带有参数的ShowDialog()重载方法，该参数指定对话框的所有者（父）窗体。

我认为最简单的方法是创建一个属性Topmost设置为$ true的新表单并将其用作所有者表单：

function Get-Folder {
    [CmdletBinding()]
    param (
        [Parameter(Mandatory=$false,ValueFromPipeline=$true,ValueFromPipelineByPropertyName=$true,Position=0)]
        [string]$Message = "Please select a directory.",[Parameter(Mandatory=$false,Position=1)]
        [string]$InitialDirectory,[Parameter(Mandatory=$false)]
        [System.Environment+SpecialFolder]$RootFolder = [System.Environment+SpecialFolder]::Desktop,[switch]$ShowNewFolderButton
    )
    Add-Type -AssemblyName System.Windows.Forms
    $dialog = New-Object System.Windows.Forms.FolderBrowserDialog
    $dialog.Description  = $Message
    $dialog.SelectedPath = $InitialDirectory
    $dialog.RootFolder   = $RootFolder
    $dialog.ShowNewFolderButton = if ($ShowNewFolderButton) { $true } else { $false }
    $selected = $null

    # force the dialog TopMost
    # Since the owning window will not be used after the dialog has been 
    # closed we can just create a new form on the fly within the method call
    $result = $dialog.ShowDialog((New-Object System.Windows.Forms.Form -Property @{TopMost = $true }))
    if ($result -eq [Windows.Forms.DialogResult]::OK){
        $selected = $dialog.SelectedPath
    }
    # clear the FolderBrowserDialog from memory
    $dialog.Dispose()
    # return the selected folder
    $selected
}