我希望找到一种方法通过AzureAD自动将用户的对象ID写入变量。
Get-AzureAdUser -ObjectId“Contose@contoso.com”
将给出ObjectId，DisplayName，UPN，UserType的输出
我期待将用户的ObjectId(例如qwert_1232_trwwqe)写入变量，例如$ UserId，以便在脚本中进一步使用。
Lee Dailey提供了一个很好的指针：
通常的方法是保留内容，
$Var并在需要时简单地处理属性。因此，将调用分配给a$Var并获取值$Var.ObjectID。
也就是说，如果您确实想要将对象ID 单独存储在专用变量中，只需访问.ObjectId返回的对象上的属性Get-AzureAdUser：
$userId = (Get-AzureAdUser -ObjectId 'Contose@contoso.com').ObjectId
在后续评论中，您提到到达：
$Var = Get-AzureAdUser -ObjectId "Contose@contoso.com" | Select ObjectId
但是，使用Select-Objectcmdlet(其内置别名select)实际上是毫无意义的，因为这仍然会返回一个(新的，自定义的)对象，它要求您访问其.ObjectId 属性以便检索对象ID值 - 为此您可以只通过分配返回的对象Get-AzureAdUser 直接到$Var，李建议。
它是能够使用Select-Object以提取一个单一的属性值，即通过-ExpandProperty <propertyName>参数：
$Var = Get-AzureAdUser -ObjectId 'Contose@contoso.com' | Select -ExpandProperty ObjectId
但是，(...).ObjectId语法(点表示法)不仅更方便，而且更快 - 甚至可以在多个对象(在PSv3 +中)上工作，在这种情况下返回一个值数组(称为成员枚举的特征)。
简而言之，Select-Object -ExpandProperty只有在处理必须在管道中逐个处理的非常大的集合时才需要。
I am looking to find a way to write the Object ID of a user to a variable automatically via AzureAD.
Get-AzureAdUser -ObjectId "Contose@contoso.com"
will give the output of the ObjectId, DisplayName, UPN, UserType
I am looking to the write the ObjectId of the user (e.g qwert_1232_trwwqe) to variable such as $UserId for use further in the script.
Lee Dailey provides a good pointer:
the usual way is to keep things in the
$Varand simply address the properties when needed. So, assign the call to a$Varand get the value with$Var.ObjectID.
That said, if you do want to store the object ID alone in a dedicated variable, simply access the .ObjectId property on the object returned by Get-AzureAdUser:
$userId = (Get-AzureAdUser -ObjectId 'Contose@contoso.com').ObjectId
In a follow-up comment you mention arriving at:
$Var = Get-AzureAdUser -ObjectId "Contose@contoso.com" | Select ObjectId
However, this use of the Select-Object cmdlet (whose built-in alias is select) is virtually pointless, as this still returns a (new, custom) object that requires you to access its .ObjectId property in order to retrieve the object ID value - and for that you could have just assigned the object returned by Get-AzureAdUser directly to $Var, as Lee suggests.
It is possible to use Select-Object to extract a single property value, namely via the -ExpandProperty <propertyName> parameter:
$Var = Get-AzureAdUser -ObjectId 'Contose@contoso.com' | Select -ExpandProperty ObjectId
However, the (...).ObjectId syntax (dot notation) is not only more convenient, but also faster - and it even works on multiple objects (in PSv3+), in which case an array of values is returned (a feature called member enumeration).
In short, Select-Object -ExpandProperty is only needed if you're processing very large collections that must be processed one by one in the pipeline.