直到用户输入是/否 [英] do until user input yes/no

问题描述

我正在尝试编写一个简单的 do..until 循环，但它不起作用:

I am trying to write a simple do..until loop and it does not work:

$yesNo = Read-Host -Prompt 'Do you want to add alternative DNS names or IPs into Certificate? Y/N: '

do {
    $dnsipname = Read-Host -Prompt "Please input DNS or IP as dns=alternativeCNname or ip=ipName: "
    Write-Output "$dnsipname" 
    $strQuit = Read-Host " do you want to add another DNS? (Y/N)"
    do {
        $dnsipname = Read-Host -Prompt "Please input DNS or IP as dns=alternativeCNname or ip=ipName: "
        Write-Output "$dnsipname" 
        Add-Content D:\Scripts\expiringCerts\request.inf '`r`n_continue_ = "$dnsipname"'
    } until ($strQuit -eq "Y" -or "y")
} until ($yesNo -eq "Y" -or "y")

这个只循环两次，但每次我点击 Y 时它都应该循环，但是当我点击 N 或 n 时它应该会中断.

This one does loop twice only, but it should loop every time I hit Y but when I hit N or n It should break.

有什么想法吗?

推荐答案

在 PowerShell 中，您基本上有三个选项来提示用户选择是/否.

In PowerShell you have basically three options to prompt a user for a yes/no choice.

• <代码>读取主机 cmdlet:

• The Read-Host cmdlet:

$msg = 'Do you want to add alternative DNS names or IPs into Certificate? [Y/N]'
do {
    $response = Read-Host -Prompt $msg
    if ($response -eq 'y') {
        # prompt for name/address and add to certificate
    }
} until ($response -eq 'n')

如果您想忽略响应中的尾随字符，请使用 -like 'y*' 和 -like 'n*'.

Use -like 'y*' and -like 'n*' if you want to ignore trailing characters in the response.

PromptForChoice() 方法:

$title   = 'Certificate Alternative Names'
$msg     = 'Do you want to add alternative DNS names or IPs?'
$options = '&Yes', '&No'
$default = 1  # 0=Yes, 1=No

do {
    $response = $Host.UI.PromptForChoice($title, $msg, $options, $default)
    if ($response -eq 0) {
        # prompt for name/address and add to certificate
    }
} until ($response -eq 1)

选择 命令:

$msg = 'Do you want to add alternative DNS names or IPs into Certificate'
do {
    choice /c yn /m $msg
    $response = $LASTEXITCODE
    if ($response -eq 0) {
        # prompt for name/address and add to certificate
    }
} until ($response -eq 1)

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