複製PowerShell的字典到一個變量

Question

我想克隆一個字典到使用.clone()方法稱爲$backUp一個變量，但它與錯誤而失敗：

Method invocation failed because [System.Collections.Generic.Dictionary`2[[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089],[System.String, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]]] does not contain a method named 'Clone'. At line:10 char:1 + $backUp = $originalKeyValuePairs.Clone() + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : InvalidOperation: (:) [], RuntimeException + FullyQualifiedErrorId : MethodNotFound

$originalKeyValuePairs = New-Object "System.Collections.Generic.Dictionary``2[System.String,System.String]" 
$originalKeyValuePairs.add("key1", "value1") 
$originalKeyValuePairs.add("key2", "value2") 
$originalKeyValuePairs.add("key3", "value3") 
$originalKeyValuePairs.add("key4", "value4") 

Write-Output "This is the original dictionary" $originalKeyValuePairs 

#Copy the "originalKeyValuePairs" into a variable 
$backUp = $originalKeyValuePairs.Clone() 

#update the 'key2' value to something else: 
$originalKeyValuePairs["key2"] = "tempvalue" 

#Now I'm done with updating the values. Now I want to restore my "$backUp" into the $originalKeyValuePairs 
$originalKeyValuePairs = $backUp.clone() 

Write-Output "Done with updating some of the value in original keyValuePairs and restore 'backUp' dictionary into 'originalKeyValuePairs'. Here is the unmodified dictionary" $originalKeyValuePairs 

Answer 1

你要深複製它而不是克隆它。退房this link

$originalKeyValuePairs = New-Object "System.Collections.Generic.Dictionary``2[System.String,System.String]" 
$originalKeyValuePairs.add("key1", "value1") 
$originalKeyValuePairs.add("key2", "value2") 
$originalKeyValuePairs.add("key3", "value3") 
$originalKeyValuePairs.add("key4", "value4") 

Write-Output "This is the original dictionary" $originalKeyValuePairs 

#Copy the "originalKeyValuePairs" into a variable 
$ms = New-Object System.IO.MemoryStream 
$bf = New-Object System.Runtime.Serialization.Formatters.Binary.BinaryFormatter 
$bf.Serialize($ms, $originalkeyvaluepairs) 
$ms.Position = 0 
$backup = $bf.Deserialize($ms) 
$ms.Close() 

#update the 'key2' value to something else: 
$originalKeyValuePairs["key2"] = "tempvalue" 

#Now I'm done with updating the values. Now I want to restore my "$backUp" into the $originalKeyValuePairs 
$ms = New-Object System.IO.MemoryStream 
$bf = New-Object System.Runtime.Serialization.Formatters.Binary.BinaryFormatter 
$bf.Serialize($ms, $backup) 
$ms.Position = 0 
$originalkeyvaluepairs = $bf.Deserialize($ms) 
$ms.Close() 

Write-Output "Done with updating some of the value in original keyValuePairs and restore 'backUp' dictionary into 'originalKeyValuePairs'. Here is the unmodified dictionary" $originalKeyValuePairs