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[英]How do I make a variable that requires a type of a class that inherits an abstract?
[英]How do I strictly-type a variable as a specific WMI class?
在大多数情况下,您期望的函数参数是[wmiclass]
。 但是,我正在使用自定义类在自定义命名空间中工作。 当我使用Get-Member
,它将类型显示为:
System.Management.ManagementClass#ROOT\namespace\class_name
如何将该 WMI 类指定为变量类型? 这个例子不起作用:
param(
[wmiclass#root\namespace\class_name]
$Class
)
这返回
Unable to find type [System.Management.ManagementClass#ROOT\namespace\class_name].
出于这个问题的目的,假设我正在尝试针对
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解决
你能做这个吗?
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
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