Powershell 数据表

Question

任何人都可以提供有关 powershell 表的帮助吗？

脚本的工作部分

Function CheckWMI {
Param (
    [Parameter(Mandatory=$True)]
    $Computers

)
        $CheckWMIResults = New-Object system.Data.DataTable
        $Function = $CheckWMIResults.columns.add("ComputerName", [System.Type]::GetType("System.String") )
        $Function = $CheckWMIResults.columns.add("Attempts", [System.Type]::GetType("System.Int32") )
        $Function = $CheckWMIResults.columns.add("Result", [System.Type]::GetType("System.String") )

    ForEach ($Computer in $Computers) {
        $CheckWMIResults.Rows.Add($Computer,"0","Incomplete")
    }

}

CheckWMI "192.168.1.8","192.168.1.7","192.168.1.6"

如您所见，它获取每个 IP 地址并为它们创建单独的行。

现在我该如何选择其中一行并更新它，例如第二行的计数列？

Answer 1

没有必要为此使用像 DataTable 这样繁重的数据结构。你所需要的只是一个简单的集合，比如一个数组和通用的PSObject。下面重写你上面的脚本，然后将第一台计算机的Result设置为Complete：

Function CheckWMI {
Param (
    [Parameter(Mandatory=$True)]
    [string[]]$Computers

)
    $CheckWMIResults = @();

    ForEach ($Computer in $Computers) {
        $TempResults = New-Object PSObject;
        $TempResults | Add-Member -MemberType NoteProperty -Name "ComputerName" -Value $Computer;
        $TempResults | Add-Member -MemberType NoteProperty -Name "Attempts" -Value 0;
        $TempResults | Add-Member -MemberType NoteProperty -Name "Result" -Value "Incomplete";
        $CheckWMIResults += $TempResults;
    }
    $CheckWMIResults;
}

$Results = CheckWMI -Computers "192.168.1.8","192.168.1.7","192.168.1.6"
$Results[0].Result = "Complete";
$Results;

如果您确实需要类型检查（DataTable 为您提供），请定义您自己的类型。

add-type @"
public class WMIResults {
   public string ComputerName;
   public int Attempts;
   public string Result;
}
"@

Function CheckWMI {
Param (
    [Parameter(Mandatory=$True)]
    [string[]]$Computers

)
    $CheckWMIResults = @();

    ForEach ($Computer in $Computers) {
        $TempResults = New-Object WMIResults;
        $TempResults.ComputerName = $Computer
        $TempResults.Attempts = 0;
        $TempResults.Result = "Incomplete";
        $CheckWMIResults += $TempResults;
    }
    $CheckWMIResults;
}

$Results = CheckWMI -Computers "192.168.1.8","192.168.1.7","192.168.1.6"
$Results[0].Result = "Complete";
$Results;

请参阅http://blogs.msdn.com/b/powershell/archive/2009/03/11/how-to-create-an-object-in-powershell.aspx 和Get-Help Add-Type 了解有关第二种方法的更多详细信息（对于琐碎的情况，您可以使用结构而不是类，但classes are generally a better idea）。