在Powershell的ForEach-Object循环中获取当前的哈希键 [英] Getting the current hash key in a ForEach-Object loop in powershell

问题描述

我有一个哈希表:

$myHash = @{ 
   "key1" = @{
       "Entry 1" = "one"
       "Entry 2" = "two"
   }
   "key 2" = @{
       "Entry 1" = "three"
       "Entry 2" = "four"
   }
}

我正在遍历以获取对象:

I'm doing a loop through to get the objects:

$myHash.keys | ForEach-Object {
    Write-Host $_["Entry 1"]
}

很好，但是我可以用什么来找出我在$myHash的哪个键中呢? $_.Name不返回任何内容.我很困惑帮助?

Works fine, but what can I use to figure out which of the keys of $myHash I'm in? $_.Name doesn't return anything. I'm stumped. Help?

推荐答案

我喜欢在循环哈希表时使用GetEnumerator().它将为您提供对象的属性value和键/名称的属性key.试试:

I like to use GetEnumerator() when looping a hashtable. It will give you a property value with the object, and a property key with it's key/name. Try:

$myHash.GetEnumerator() | % { 
    Write-Host "Current hashtable is: $($_.key)"
    Write-Host "Value of Entry 1 is: $($_.value["Entry 1"])" 
}

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