PowerShell 技能连载 - 带对话框的必选参数
通常地,当您将一个函数参数标记为“必选的”,如果用户遗漏了这个参数,PowerShell 将提示用户:
function Get-Something
{
param
(
[Parameter(Mandatory=$true)]
$Path
)
"You entered $Path"
}
结果如下所示:
PS> Get-Something
cmdlet Get-Something at command pipeline position 1
Supply values for the following parameters:
Path:
以下是另一种选择:如果用户遗漏了 -Path
,该函数弹出一个打开文件对话框:
function Get-Something
{
param
(
$Path = $(
Add-Type -AssemblyName System.Windows.Forms
$dlg = New-Object -TypeName System.Windows.Forms.OpenFileDialog
if ($dlg.ShowDialog() -eq 'OK') { $dlg.FileName } else { throw 'No Path submitted'}
)
)
"You entered $Path"
}
PowerShell 技能连载 - 带对话框的必选参数
http://blog.vichamp.com/2014/02/06/mandatory-parameter-with-a-dialog/