powershell - 如何在 PowerShell 中的函数结束时返回用户菜单

Question

我正在编写一个 PowerShell 脚本，它为用户提供了多个可供选择的选项。选择一个选项后，将执行一个功能，然后用户将返回到原始菜单。

在下面的代码中，为用户提供了选项，并执行了功能，但完成后，脚本就结束了。相反，我想要的是在函数结束时返回到原始用户菜单。有人可以告诉我该怎么做吗？谢谢!

function firstFunction {
    Write-Host "You chose option 1"
    return
}

Write-Host "Welcome"

[int]$userMenuChoice = 0
while ( $userMenuChoice -lt 1 -or $userMenuChoice -gt 4){
    Write-Host "1. Menu Option 1"
    Write-Host "2. Menu Option 2"
    Write-Host "3. Menu Option 3"
    Write-Host "4. Quit and Exit"

[int]$userMenuChoice = Read-Host "Please choose an option"}
switch ($userMenuChoice) {
    1{firstFunction}
    2{Write-Host "You chose option 2"}
    3{Write-Host "You chose option 3"}
default {Write-Host "Nothing selected"}
}

Answer 1

将菜单代码放入一个不会终止的外部循环中，除非 $userMenuChoice 为 4:

do {
  [int]$userMenuChoice = 0
  while ( $userMenuChoice -lt 1 -or $userMenuChoice -gt 4) {
    Write-Host "1. Menu Option 1"
    Write-Host "2. Menu Option 2"
    Write-Host "3. Menu Option 3"
    Write-Host "4. Quit and Exit"

    [int]$userMenuChoice = Read-Host "Please choose an option"

    switch ($userMenuChoice) {
      1{firstFunction}
      2{Write-Host "You chose option 2"}
      3{Write-Host "You chose option 3"}
      default {Write-Host "Nothing selected"}
    }
  }
} while ( $userMenuChoice -ne 4 )