使用powershell构建交互式菜单

Question

下面的脚本将显示菜单和selection.However提示，如果选择错误，这不会给出重新选择的选项。

我想重新写这样一种方式，它应该给出选项，以确认选择，如果选择是错误的，应该给一个选项重新选择从菜单。可以使用“做直到”循环吗？任何帮助都是非常感谢的

write-host ""
Write-host -ForegroundColor yellow "Choose which Cluster you want to gather ratios on:"
write-host "(it may take a few seconds to build the list)"
write-host ""

$ICLUSTER = get-cluster -server $VIServer | Select-Object Name | Sort-object Name
if ($null -eq $ICLUSTER)
{
    Update-log "Unable to find Cluster Information.Please verify the cluster status before proceed `n"
    break 
}
else
{
$i = 1
$ICLUSTER | %{Write-Host $i":" $_.Name; $i++}
$HCLUSTER = Read-host "Choose the name of cluster you want to select on by entering corresponding number:"
$SCLUSTER = $ICLUSTER[$HCLUSTER -1].Name
Update-log "You have selected $($SCLUSTER). `n"
start-sleep -s 3
}

Answer 1

循环&几个额外的if语句应该会让您达到这个目的：

# break the loop by setting $x not equal to 1
$x = 1 

While ($x -eq 1){
$ICLUSTER = get-cluster -server $VIServer | Select-Object Name | Sort-object Name
if ($null -eq $ICLUSTER){
    Update-log "Unable to find Cluster Information. Please verify the cluster status before proceed `n"
    $x = 2
    }
else{
    $i = 1
    $ICLUSTER | %{Write-Host $i":" $_.Name; $i++}
    $HCLUSTER = Read-host "Choose the name of cluster you want to select on by entering corresponding number:"
    $SCLUSTER = $ICLUSTER[$HCLUSTER -1].Name

    if ($SCLUSTER -in $ICLUSTER.Name){
        Write-Host "You have selected $($SCLUSTER), do you want to continue?"
        $yesno = Read-host "Please type 'Y' to continue or 'N' to quit"
        if ($yesno -eq "Y"){
            $x = 1
            }
    else {Write-Host "Quitting"
              $x = 2
              }
    Write-Host "Performing commands"
    # Add commands here, to do the work & complete the task
    $x = 2
    }
elseif (-not($SCLUSTER -in $ICLUSTER.Name)){
    Write-Host "Your selection was not found, Would you like to try again?"
    $yesno = Read-host "Please type 'Y' to try again or 'N' to quit"
    if ($yesno -eq "Y"){
        Write-Host "Trying this again"
        $x = 1
        }
else {Write-Host "Quitting"
      $x = 2
      }
}
start-sleep -s 3
    }
}