多次提示退出菜单

如何解决多次提示退出菜单

尝试编写一个使用菜单和子菜单的 PowerShell 脚本。当我第一次运行代码并按 Q 退出“主菜单”时，它退出回到控制台。但是，如果我进入“菜单 1”，然后退出“主菜单”，然后再次退出控制台，它会再次运行此代码 $input = Read-Host "Please choose an option"

我已经尝试寻找退出菜单的不同方法，但到目前为止还没有找到太多运气。任何建议将不胜感激

参见下面的示例代码：

function showMainMenu {
    function showMenu1 {

        do {
            Write-Host "================ Menu 1 ================"

            Write-Host "1: Option 1"
            Write-Host "Q: Back to the main menu"

            $input = Read-Host "Please choose an option"
            switch ($input) {
                '1' {
                    Write-Host "Some text"
                } 'q' {
                    showMainMenu        
                }
            }
                
        }
        until ($input -eq 'q')

    }

    function showMenu2 {
        Write-Host "================ Menu 2 ================"

        Write-Host "1: Option 1"
        Write-Host "Q: Press Q to quit"
        
        do {
            $input = Read-Host "Please choose an option"
            switch ($input) {
                '1' {
                    Write-Host "Some text"
                } 'q' {
                    showMainMenu
                }
            }
        }
        until ($input -eq 'q')

    }

    Write-Host "================ Main Menu ================"
        
    Write-Host "1: Menu 1"
    Write-Host "2: Menu 2"
    Write-Host "3: Press Q to quit"
        
    do {
        $input = Read-Host "Please choose an option"
        switch ($input) {
            '1' {
                showMenu1
            } '2' {
                showMenu2
            } 'q' {
                return
            }               
        }
        pause
    }
    until ($input -eq 'q')  
}

showMainMenu

解决方法

由于使用了 do{}until()，它陷入了循环。

function showMainMenu {
    function showMenu1 {

        do {
            Write-Host "================ Menu 1 ================"

            Write-Host "1: Option 1"
            Write-Host "Q: Back to the main menu"

            $input = Read-Host "Please choose an option"
            switch ($input) {
                '1' {
                    Write-Host "Some text"
                } 'q' {
                    showMainMenu        
                }
            }
                
        }
        until ($input -eq 'q')

    }

    function showMenu2 {
        Write-Host "================ Menu 2 ================"

        Write-Host "1: Option 1"
        Write-Host "Q: Press Q to quit"
        
        do {
            $input = Read-Host "Please choose an option"
            switch ($input) {
                '1' {
                    Write-Host "Some text"
                } 'q' {
                    showMainMenu
                }
            }
        }
        until ($input -eq 'q')

    }

    Write-Host "================ Main Menu ================"
        
    Write-Host "1: Menu 1"
    Write-Host "2: Menu 2"
    Write-Host "3: Press Q to quit"
        

        $input = Read-Host "Please choose an option"
        switch ($input) {
            '1' {
                showMenu1
            } '2' {
                showMenu2
            } 'q' {
                break
            }               
        }
}

showMainMenu