如何获取具有特定值的哈希表键? [英] How to get hash table key which has specific value?

问题描述

我有一个哈希表，其中根据值使用键.

I am having a hash table where Keys are being used based on value.

例如.

    $ComponentTobeBuild=@{"ComponentNameX"="True";
                          "ComponentNameXyz"="False";
                          "SomeComponent"="False"}

我想获取值为 True 的键.(我会将密钥作为参数传递给其他脚本).

I would like to get the keys which are having values True. (I will pass the key to some other script as parameter).

我是这样尝试的，但我认为我缺少某些地方，因为它没有列出密钥.

I was trying like that , But i think some where i am missing as it is not listing the keys.

$($ComponentToBuild.Keys) | Where-Object { $_.Value -eq "True" }

如何获取表示为True的组件名称?另外我想知道哈希表是否是此类工作的明智选择.因为我认为哈希表将主要用于处理值.

How to get the component Name which are having denoted as True? Also i would like to know whether hash table is a wise choice for this kind of work. Because I thought that Hash table will be mainly be used for processing the values.

推荐答案

这应该可以满足您的需求.

Hi this should work for what you want.

$ComponentTobeBuild=@{"ComponentNameX"="Test";
                          "ComponentNameXyz"="False";
                          "SomeComponent"="False"}                    

Foreach ($Key in ($ComponentTobeBuild.GetEnumerator() | Where-Object {$_.Value -eq "Test"}))
{$Key.name}

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