在PowerShell中,如何通过指定对象的名称(字符串)来获取对象的属性值?我想要以下内容:
$obj = get-something
# View the object's members:
$obj | gm
# I could retrieve a property by doing so:
write-host $obj.SomeProp
# But for many purposes, I would really want to:
write-host $obj | Get-PropertyByName "SomeProp"
在PowerShell中有类似“Get-PropertyByName”的东西吗?
当然
write-host ($obj | Select -ExpandProperty "SomeProp")
或者就此而言:
$obj."SomeProp"
扩展@aquinas:
Get-something | select -ExpandProperty PropertyName
要么
Get-something | select -expand PropertyName
要么
Get-something | select -exp PropertyName
我为那些可能正在寻找单行命令以获取某些信息并希望包含一个真实示例的人提出了这些建议。
在通过PowerShell管理Office 365时,以下是我用于获取已添加到“BookInPolicy”列表中的所有用户/组的示例:
Get-CalendarProcessing [email protected] | Select -expand BookInPolicy
仅仅使用“Select BookInPolicy”就会切断几个成员,所以感谢您提供这些信息!
您可以使用Select-Object
cmdlet按名称获取属性,并指定您感兴趣的属性名称。请注意,这不仅仅返回该属性的原始值;相反,你得到的东西仍像行为一样。
[PS]> $property = (Get-Process)[0] | Select-Object -Property Name
[PS]> $property
Name
----
armsvc
[PS]> $property.GetType().FullName
System.Management.Automation.PSCustomObject
为了使用该属性的值,您仍然需要确定您追求的属性,即使只有一个属性:
[PS]> $property.Name
armsvc
[PS]> $property -eq "armsvc"
False
[PS]> $property.Name -eq "armsvc"
True
[PS]> $property.Name.GetType().FullName
System.String
根据此处的其他答案,如果要在字符串中使用单个属性,则需要计算表达式(在其周围放置括号)和前缀为美元符号($)以将表达式动态声明为要插入的变量进入字符串:
[PS]> "The first process in the list is: $($property.Name)"
The first process in the list is: armsvc
非常正确,其他人通过推荐-ExpandProperty
cmdlet的Select-Object
参数来回答这个问题。这通过返回指定属性的值来绕过一些令人头痛的问题,但是您将希望在不同的方案中使用不同的方法。
-ExpandProperty <String>
指定要选择的属性,并指示应尝试扩展该属性
[PS]> (Get-Process)[0] | Select-Object -ExpandProperty Name
armsvc
试试这个 :
$obj = @{
SomeProp = "Hello"
}
Write-Host "Property Value is $($obj."SomeProp")"
$com1 = new-object PSobject #Task1
$com2 = new-object PSobject #Task1
$com3 = new-object PSobject #Task1
$com1 | add-member noteproperty -name user -value jindpal #Task2
$com1 | add-member noteproperty -name code -value IT01 #Task2
$com1 | add-member scriptmethod ver {[system.Environment]::oSVersion.Version} #Task3
$com2 | add-member noteproperty -name user -value singh #Task2
$com2 | add-member noteproperty -name code -value IT02 #Task2
$com2 | add-member scriptmethod ver {[system.Environment]::oSVersion.Version} #Task3
$com3 | add-member noteproperty -name user -value dhanoa #Task2
$com3 | add-member noteproperty -name code -value IT03 #Task2
$com3 | add-member scriptmethod ver {[system.Environment]::oSVersion.Version} #Task3
$arr += $com1, $com2, $com3 #Task4
write-host "windows version of computer1 is: "$com1.ver() #Task3
write-host "user name of computer1 is: "$com1.user #Task6
write-host "code of computer1 is: "$com1,code #Task5
write-host "windows version of computer2 is: "$com2.ver() #Task3
write-host "user name of computer2 is: "$com2.user #Task6
write-host "windows version of computer3 is: "$com3.ver() #Task3
write-host "user name of computer3 is: "$com1.user #Task6
write-host "code of computer3 is: "$com3,code #Task5
read-host
以下是获取对象属性值的另一种方法:
write-host $(get-something).SomeProp