如何将变量严格键入为特定 WMI class？

Question

在大多数情况下，您对函数参数的期望是 [wmiclass]。但是，我正在使用自定义 class 的自定义命名空间中工作。当我使用 Get-Member 时，它显示类型为：

System.Management.ManagementClass#ROOT\namespace\class_name

如何将 WMI class 指定为变量类型？此示例不起作用：

param(
    [wmiclass#root\namespace\class_name]
    $Class
)

这个returns

Unable to find type [System.Management.ManagementClass#ROOT\namespace\class_name].

为了这个问题的目的，假设我正在尝试定位

ROOT\cimv2\Win32_Service

标记 c# 因为它是切线相关的，我很好奇这是否在那里得到解决

Answer 1

你能做到吗？

Param (
    [PsTypeName("System.Management.ManagementClass#ROOT\namespace\class_name")]
    $Class
)

或者，如果使用 CIM 而不是 WMI，则：

Param (
    [PsTypeName("System.Management.Infrastructure.CimInstance#root/namespace/class_name")]
    $Class
)

测试用例：

function test {
    Param (
        [psTypename("System.Management.ManagementClass#ROOT\cimv2\StdRegProv")]
        $mine
    )
    $mine
}

$reg = [wmiclass]"\.\root\cimv2:StdRegprov"
$reg | gm
#outputs:    TypeName: System.Management.ManagementClass#ROOT\cimv2\StdRegProv

[wmiclass]$wmi = ""
$wmi | gm
# outputs:    TypeName: System.Management.ManagementClass#\

test $wmi
# Errors:    test : Cannot bind argument to parameter 'mine', because PSTypeNames of the argument do not match the PSTypeName
# required by the parameter: System.Management.ManagementClass#ROOT\cimv2\StdRegProv.
# At line:1 char:6
# + test $wmi
# +      ~~~~
#     + CategoryInfo          : InvalidArgument: (:) [test], ParameterBindingArgumentTransformationException
#     + FullyQualifiedErrorId : MismatchedPSTypeName,test

test $reg
# outputs:    NameSpace: ROOT\cimv2
# Name                                Methods              Properties
# ----                                -------              ----------
# StdRegProv                          {CreateKey, Delet... {}

PowerShell V2 测试：

function testv2 {    
    param(
        [ValidateScript({($_ | Get-Member)[0].typename -eq 'System.Management.ManagementClass#ROOT\cimv2\StdRegProv'})]
        $mine
    )
    $mine
}

testv2 $reg

# outputs:    NameSpace: ROOT\cimv2
#
# Name                                Methods              Properties
# ----                                -------              ----------
# StdRegProv                          {CreateKey, Delet... {}

testv2 $wmi

# Error:    testv2 : Cannot validate argument on parameter 'mine'. The "($_ | gm)[0].typename -eq 'System.Management.ManagementClas
# s#ROOT\cimv2\StdRegProv'" validation script for the argument with value "" did not return true. Determine why the valid
# ation script failed and then try the command again.
# At line:1 char:7
# + testv2 <<<<  $wmi
#     + CategoryInfo          : InvalidData: (:) [testv2], ParameterBindingValidationException
#     + FullyQualifiedErrorId : ParameterArgumentValidationError,testv2

如何将变量严格键入为特定 WMI class？

How do I strictly-type a variable as a specific WMI class?

.net

c#

powershell

wmi