在VB.NET中运行powershell -如何访问变量的内容

Question

我正在使用System.Management.Automation在VB中运行一个简单的脚本，如下所示

脚本运行得很好，但是运行后如何在代码中访问$offline和$online的内容呢？

 Dim scriptContents = New StringBuilder()

    scriptContents.AppendLine("$computers = @(""PC-1"", ""PC-2"", ""PC-3"")")

    scriptContents.AppendLine("$online = @()")
    scriptContents.AppendLine("$offline = @()")

    scriptContents.AppendLine("Foreach ($computer in $computers) {")

    scriptContents.AppendLine("If (Test-Connection -ComputerName $computer -Count 2 -Quiet -ErrorAction SilentlyContinue) {")
    scriptContents.AppendLine("$online += $computer")
    scriptContents.AppendLine("}")
    scriptContents.AppendLine("Else {")
    scriptContents.AppendLine("$offline += $computer")
    scriptContents.AppendLine("}")
    scriptContents.AppendLine("}")

     Using ps As PowerShell = PowerShell.Create()

        ps.AddScript(scriptContents.ToString)

        Dim results1 As PSDataCollection(Of PSObject) = Await Task.Run(Function() ps.InvokeAsync)

        Stop

    End Using

谢谢

Answer 1

我认为解决方案不是让脚本创建两个单独的数组，而是让它返回一个PSObjects数组，其中每一项都有两个属性：Computer和一个布尔型Online。

可能是这样的：

Dim scriptContents = New StringBuilder()

scriptContents.AppendLine("$computers = @(""PC-1"", ""PC-2"", ""PC-2"")")
scriptContents.AppendLine("Foreach ($computer in $computers) {")

scriptContents.AppendLine("If (Test-Connection -ComputerName $computer -Count 2 -Quiet -ErrorAction SilentlyContinue) {")
scriptContents.AppendLine("    [PsCustomObject]@{Computer = $computer; Online = $true}")
scriptContents.AppendLine("}")
scriptContents.AppendLine("Else {")
scriptContents.AppendLine("    [PsCustomObject]@{Computer = $computer; Online = $false}")
scriptContents.AppendLine("}")
scriptContents.AppendLine("}")

Using ps As PowerShell = PowerShell.Create()

    ps.AddScript(scriptContents.ToString)

    Dim results1 As Collection(Of PSObject) = ps.Invoke()

End Using