How do I use nested Label with nested Switch in Powershell?

Question

Hi,
I am trying to run the script with Label and Switch in Menu format so that the main module calls the submodule and ends in the submodule. The submodule should be able to call another module.
Please correct the script, as I think I am going wrong
Do { Write-Host " ----------MENU A----------
1 = option 1
2 = Option 2
3 = Option 3
$choice1 = read-host -prompt "Select number & press enter" }
until ($choice1 -eq "1" -or $choice1 -eq "2" -or $choice1 -eq "3")
Switch ($choice1)
    { "1" break :module1
      "2" break :module2
      "3" break :module3
module1
    Do { Write-Host " ----------MENU B----------
    1 = option 1
    2 = Option 2
    $choice2 = read-host -prompt "Select number & press enter" }
    until ($choice2 -eq "1" -or $choice2 -eq "2")
    Switch ($choice2)
    { write "Module 2"
      "1" break :module2
      "2" break :module3
module2
    Do { Write-Host " ----------MENU C----------
    1 = option 1
    $choice3 = read-host -prompt "Select number & press enter" }
    until ($choice3 -eq "1")
    Switch ($choice3)
    { write "Module 3"
      "1" break :module2
Tirtha Chandan Tripathy

Answer 1

Hi Tirtha,
What you want to do in PowerShell is separate elements of logic trees into individual functions. I rewrote your script attempt somewhat to show you how to do this:
function Show-MenuMain
Do
Write-Host @"
----------MENU A----------
1 = option 1
2 = Option 2
3 = Option 3
$Choice = read-host -prompt "Select number & press enter"
until ($Choice -eq "1" -or $Choice -eq "2" -or $Choice -eq "3")
Switch ($Choice)
"1" { Show-MenuModule1 }
"2" { Show-MenuModule2 }
"3" { Show-MenuModule3 }
function Show-MenuModule1
Do
Write-Host @"
----------MENU B----------
1 = option 1
2 = Option 2
$Choice = read-host -prompt "Select number & press enter"
until ($Choice -eq "1" -or $Choice -eq "2")
Switch ($Choice)
"1" { Show-MenuModule2 }
"2" { Show-MenuModule3 }
function Show-MenuModule2
Do
Write-Host @"
----------MENU C----------
1 = option 1
$Choice = read-host -prompt "Select number & press enter"
until ($Choice -eq "1")
Switch ($Choice)
"1" { Show-MenuModule1 }
Show-MenuMain
I know, this really only prepares the path to a host of new questions, more than answering your current ones, but it gives you something to work with and build upon.
Cheers,
Fred
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