powershell - Powershell 数据表

Question

任何人都可以对powershell表提供一些帮助吗？

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。您所需要的只是一个简单的集合，如数组和泛型PSObject. 下面重写了上面的脚本，然后将Result第一台计算机的设置为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（这DataTable给了您），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以及Get-Help Add-Type有关第二种方法的更多详细信息（您可以使用一个结构而不是一个用于琐碎案例的类，但类通常是一个更好的主意）。