Question

我在为脚本生成动态选项列表时遇到一些问题。我可以看到它返回选项列表，我可以选择它们中的每一个。但是我的验证并没有像我预期的那样有效。

Write-Host "Gathering cluster information..." -foreground Green
$allclusters = Get-Cluster | Sort Name
$allHosts = $allclusters | Get-VMHost
Write-Host "Found " $allclusters.count " containing " $allHosts.count " Hosts." -Foreground Green
# LoopMain Start
Do {
$userMenuChoice = "y"
Write-Host "Select Cluster to patch:" -Foreground Yellow
for($i=0;$i -le $allclusters.length-1;$i++)
{"[{0}] - {1}" -f $i,$allclusters[$i]}
# Select VMCluster
Write-Host ""
    Write-Host "Which Cluster would you like to use (0 to"($allclusters.length-1)")" -ForegroundColor Cyan -NoNewLine ; $clusterSelect =      Read-Host " "
 Write-Host ""

 # Validate selection
 IF ($clusterSelect -le ($allclusters.length-1))
    {
    Write-Host "Selection is valid"
    # Display item from clusterarray
    Write-Host ""
    Write-Host "You selected " -NoNewLine ; Write-Host      $allclusters[$clusterSelect] -ForegroundColor Cyan -NoNewLine ;      $clusterSelectCont = Read-Host ". Shall we continue? (Y/N)"
    }
    ELSE
    {
    Write-Host "Selection is not valid"
    $clusterSelectCont = "n"
    }

选项列表适用于某些数字，但不是全部。例如，我可以从列表中选择数字12，一切都很好但是数字7失败。我创建选项列表的方式是否存在根本性的错误，或者可能是失败的验证？

Answer 1

啊，在这里与同事讨论过，建议是使用以下行将变量转换为整数：

[int]$clusterSelect = $clusterSelect

现在按预期验证，我可以毫无问题地选择所有值。

Powershell选择验证失败

1 个答案: