通过 PowerShell 命令获取返回对象的类 - 确定 cmdlet 的输出数据类型 [英] Get class of returned object by PowerShell command - determine a cmdlet's output data type

问题描述

在PowerShell中，如果一个命令返回一个包含一个或多个对象的数组，我可以通过以下方法找出对象的类:

In PowerShell, if a command returns an array of one or more objects, I can find out the class of the object by the following method:

$ab = SampleCommand
$ab[0].getType()

但是，如果命令什么都不返回(0 值的数组)，我如何找出命令的默认返回类型?

But, how can I find out the default return type of a command if the command returned nothing (array of 0 values)?

注意:例如，我正在处理 SCOM PowerShell 命令，我试图找到命令 get-scomscadvisoragent 的默认返回类类型，但它不返回任何内容，因为顾问代理不是在我的实验室设置中配置.因此，我无法获取返回对象的类.

Note: For example, I am working on SCOM PowerShell commands, and I am trying to find the default return class type of command get-scomscadvisoragent, but it returns nothing as the advisor agent is not configured in my lab setup. Hence, I am not able to get the class of returned object.

推荐答案

原则上如果要确定给定命令输出的对象类型，请使用 (Get-Command ).OutputType;在你的情况下:

If you want to determine the type of objects a given command outputs in principle, use (Get-Command <cmd>).OutputType; in your case:

(Get-Command get-scomscadvisoragent).OutputType

但是请注意，这仅在目标命令通过一个或多个OutputType 属性.

Note, however, that this only works if the target command has explicitly declared its output types via one or more OutputType attributes.

Cmdlet/高级函数可以通过帮助文本的 .OUTPUTS 部分(在基于注释的帮助中)以不太正式的方式替代/额外地描述其输出类型.
因此，如果上述方法不起作用，您也可以尝试:

Cmdlets / advanced functions may alternatively / additionally describe their output types in a less formal way, via the .OUTPUTS section of their help text (in comment-based help).
Therefore, if the above didn't work, you can also try:

(Get-Help get-scomscadvisoragent).returnvalues

后面的信息也可以在
输出的OUTPUTS部分找到Get-Help -Full .

The latter information can also be found in the OUTPUTS section of the output from
Get-Help -Full <cmd>.

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