Object powershellv2-向自定义对象添加新参数

我已经使用下面的代码创建了一个自定义对象，但现在需要添加一个附加属性

$TestList = @(
"item1"
"item2"
)

$TESTObject = @()
foreach($a in $TestList)
    {
        $dItem = $a

        $TESTObject += New-Object PSObject -property @{
                item = "$dItem";
            }
    }

FOREACH($a in $TESTObject)
{   
    #DO STUFF HERE

    $newVar = 1234

    $a | Add-Member newvar $newVar   
}

阅读在线文档和帮助文件表明我需要使用

addmember

（根据下面的示例）。 但当我运行这个时，我得到：

Add-Member : A positional parameter cannot be found that accepts argument 'newvar'.

$TestList = @(
"item1"
"item2"
)

$TESTObject = @()
foreach($a in $TestList)
    {
        $dItem = $a

        $TESTObject += New-Object PSObject -property @{
                item = "$dItem";
            }
    }

FOREACH($a in $TESTObject)
{   
    #DO STUFF HERE

    $newVar = 1234

    $a | Add-Member newvar $newVar   
}

向对象添加新参数的正确语法是什么

$TestList = @(
"item1"
"item2"
)

$TESTObject = @()
foreach($a in $TestList)
    {
        $dItem = $a

        $TESTObject += New-Object PSObject -property @{
                item = "$dItem";
            }
    }

FOREACH($a in $TESTObject)
{   
    #DO STUFF HERE

    $newVar = 1234

    $a | Add-Member newvar $newVar   
}

另外，如果我想用不同的值更新参数，我可以使用相同的add成员吗？（似乎没有“更新成员”cmdlet）

$TestList = @(
"item1"
"item2"
)

$TESTObject = @()
foreach($a in $TestList)
    {
        $dItem = $a

        $TESTObject += New-Object PSObject -property @{
                item = "$dItem";
            }
    }

FOREACH($a in $TESTObject)
{   
    #DO STUFF HERE

    $newVar = 1234

    $a | Add-Member newvar $newVar   
}

---

我发现这样做的方法是：

$TestList = @(
"item1"
"item2"
)

$TESTObject = @()
foreach($a in $TestList)
    {
        $dItem = $a

        $TESTObject += New-Object PSObject -property @{
                item = "$dItem";
            }
    }

FOREACH($a in $TESTObject)
{   
    #DO STUFF HERE

    $newVar = 1234

    $a | Add-Member newvar $newVar   
}

将成员添加到自定义（

PSObject

）对象

$TestList = @(
"item1"
"item2"
)

$TESTObject = @()
foreach($a in $TestList)
    {
        $dItem = $a

        $TESTObject += New-Object PSObject -property @{
                item = "$dItem";
            }
    }

FOREACH($a in $TESTObject)
{   
    #DO STUFF HERE

    $newVar = 1234

    $a | Add-Member newvar $newVar   
}

以及更新我使用的现有成员

$TestList = @(
"item1"
"item2"
)

$TESTObject = @()
foreach($a in $TestList)
    {
        $dItem = $a

        $TESTObject += New-Object PSObject -property @{
                item = "$dItem";
            }
    }

FOREACH($a in $TESTObject)
{   
    #DO STUFF HERE

    $newVar = 1234

    $a | Add-Member newvar $newVar   
}

Add-Member -InputObject $TESTObject -MemberType NoteProperty -Name newVar -Value $newVar -force

我不确定这是否是最好的方法（甚至是正确的方法）。但它似乎奏效了

$TestList = @(
"item1"
"item2"
)

$TESTObject = @()
foreach($a in $TestList)
    {
        $dItem = $a

        $TESTObject += New-Object PSObject -property @{
                item = "$dItem";
            }
    }

FOREACH($a in $TESTObject)
{   
    #DO STUFF HERE

    $newVar = 1234

    $a | Add-Member newvar $newVar   
}