我具有以下运行良好的PowerShell功能,但是该窗口在PowerShell ISE背后的背景中打开。
Device.BeginInvokeOnMainThread
我看到有一个Device.BeginInvokeOnMainThread(() =>
{
await App.Current.MainPage.DisplayAlert("Hello", "message", "OK");
});
类可以使用的# Shows folder browser dialog box and sets to variable
function Get-FolderName() {
Add-Type -AssemblyName System.Windows.Forms
$FolderBrowser = New-Object System.Windows.Forms.FolderBrowserDialog -Property @{
SelectedPath = 'C:\Temp\'
ShowNewFolderButton = $false
Description = "Select Staging Folder."
}
# If cancel is clicked the script will exit
if ($FolderBrowser.ShowDialog() -eq "Cancel") {break}
$FolderBrowser.SelectedPath
} #end function Get-FolderName
属性,但这似乎并没有转移到.TopMost
类中。
我想念什么吗?
答案 0 :(得分:2)
希望这会有所帮助
Add-Type -AssemblyName System.Windows.Forms
$FolderBrowser = New-Object System.Windows.Forms.FolderBrowserDialog
$FolderBrowser.Description = 'Select the folder containing the data'
$result = $FolderBrowser.ShowDialog((New-Object System.Windows.Forms.Form -Property @{TopMost = $true }))
if ($result -eq [Windows.Forms.DialogResult]::OK){
$FolderBrowser.SelectedPath
} else {
exit
}
//编辑以评论
ShowDialog()方法有两种变体(重载)。
在第二个变体中,您可以指定应该作为对话框之母的窗口。
最上面的部分应该很少使用或根本不使用!如果多个窗口位于最顶层,那么哪个位于最顶层? ;-)) 首先尝试将您的窗口设置为母亲,然后OpenfileDialog / SaveFileDialog应始终出现在窗口上方:
$openFileDialog1.ShowDialog($form1)
如果那还不够,请选择最高。
您的对话窗口继承了母亲的属性。如果您的母窗口位于最上方,则对话框也位于最上方。
这里是将对话设置为最高的示例。
但是,在此示例中,使用了一个新的未绑定窗口,因此该对话框未绑定。
$openFileDialog1.ShowDialog((New - Object System.Windows.Forms.Form - Property @{TopMost = $true; TopLevel = $true}))
答案 1 :(得分:1)
一种可靠的方法是在函数中添加一段C#代码。
使用该代码,您可以获得实现IWin32Window
接口的Windows句柄。在ShowDialog
函数中使用该句柄将确保对话框显示在顶部。
Function Get-FolderName {
# To ensure the dialog window shows in the foreground, you need to get a Window Handle from the owner process.
# This handle must implement System.Windows.Forms.IWin32Window
# Create a wrapper class that implements IWin32Window.
# The IWin32Window interface contains only a single property that must be implemented to expose the underlying handle.
$code = @"
using System;
using System.Windows.Forms;
public class Win32Window : IWin32Window
{
public Win32Window(IntPtr handle)
{
Handle = handle;
}
public IntPtr Handle { get; private set; }
}
"@
if (-not ([System.Management.Automation.PSTypeName]'Win32Window').Type) {
Add-Type -TypeDefinition $code -ReferencedAssemblies System.Windows.Forms.dll -Language CSharp
}
# Get the window handle from the current process
# $owner = New-Object Win32Window -ArgumentList ([System.Diagnostics.Process]::GetCurrentProcess().MainWindowHandle)
# Or write like this:
$owner = [Win32Window]::new([System.Diagnostics.Process]::GetCurrentProcess().MainWindowHandle)
# Or use the the window handle from the desktop
# $owner = New-Object Win32Window -ArgumentList (Get-Process -Name explorer).MainWindowHandle
# Or write like this:
# $owner = [Win32Window]::new((Get-Process -Name explorer).MainWindowHandle)
$FolderBrowser = New-Object System.Windows.Forms.FolderBrowserDialog -Property @{
SelectedPath = 'C:\Temp\'
ShowNewFolderButton = $false
Description = "Select Staging Folder."
}
# set the return value only if a selection was made
$result = $null
If ($FolderBrowser.ShowDialog($owner) -eq "OK") {
$result = $FolderBrowser.SelectedPath
}
# clear the dialog from memory
$FolderBrowser.Dispose()
return $result
}
Get-FolderName
您还可以选择将Shell.Application
对象与以下对象一起使用:
# Show an Open Folder Dialog and return the directory selected by the user.
function Get-FolderName {
[CmdletBinding()]
param (
[Parameter(Mandatory=$false, ValueFromPipeline=$true, ValueFromPipelineByPropertyName=$true, Position=0)]
[string]$Message = "Select a directory.",
[string]$InitialDirectory = [System.Environment+SpecialFolder]::MyComputer,
[switch]$ShowNewFolderButton
)
$browserForFolderOptions = 0x00000041 # BIF_RETURNONLYFSDIRS -bor BIF_NEWDIALOGSTYLE
if (!$ShowNewFolderButton) { $browserForFolderOptions += 0x00000200 } # BIF_NONEWFOLDERBUTTON
$browser = New-Object -ComObject Shell.Application
# To make the dialog topmost, you need to supply the Window handle of the current process
[intPtr]$handle = [System.Diagnostics.Process]::GetCurrentProcess().MainWindowHandle
# see: https://msdn.microsoft.com/en-us/library/windows/desktop/bb773205(v=vs.85).aspx
$folder = $browser.BrowseForFolder($handle, $Message, $browserForFolderOptions, $InitialDirectory)
$result = $null
if ($folder) {
$result = $folder.Self.Path
}
# Release and remove the used Com object from memory
[System.Runtime.Interopservices.Marshal]::ReleaseComObject($browser) | Out-Null
[System.GC]::Collect()
[System.GC]::WaitForPendingFinalizers()
return $result
}
$folder = Get-FolderName
if ($folder) { Write-Host "You selected the directory: $folder" }
else { "You did not select a directory." }
答案 2 :(得分:0)
我刚刚找到一种简单的方法来获取PowerShell的IWin32Window值,因此表单可以是模态的。创建一个System.Windows.Forms.NativeWindow对象,并将PowerShell的句柄分配给它。
If Not Exist "flag.txt" (Echo 1)>"flag txt"