[英]Passing a hashtable from C# to PowerShell
I am attempting unsuccessfully to pass a hashtable from C# to PowerShell as a script parameter. 我尝试将哈希表从C#作为脚本参数传递给PowerShell,但未成功。 The script and parameters work properly when I execute within PowerShell, so I'm assuming my error is on the C# side.
当我在PowerShell中执行时,脚本和参数可以正常工作,因此我假设我的错误在C#端。
In C#, I am simply using Command.Parameters.Add() as I would for any other parameter. 在C#中,就像在其他任何参数中一样,我只是简单地使用Command.Parameters.Add()。 All the other parameters that I pass to the script are being received correctly, but the hashtable is null.
我传递给脚本的所有其他参数都可以正确接收,但哈希表为null。
From the C# side, I have tried using both a Hashtable object and a Dictionary<string, string> object, but neither appears to work. 从C#方面,我尝试同时使用Hashtable对象和Dictionary <string,string>对象,但两者似乎都不起作用。 In both cases, I have confirmed that the object is instantiated and has values before passing to PowerShell.
在这两种情况下,我都已确认对象已实例化,并且在传递给PowerShell之前具有值。 I feel like there's a very obvious solution staring me in the face, but it just isn't clicking.
我觉得有一个非常明显的解决方案使我盯着脸上,但这只是没有点击。
You can only pass strings as command line parameters. 您只能将字符串作为命令行参数传递。
I don't know if there a limit but if there isn't you will need to convert the hashtable to a string and parse it in your PowerShell script. 我不知道是否有限制,但是如果没有限制,则需要将哈希表转换为字符串并在PowerShell脚本中进行解析。
Using this answer and the Command.Parameters.Add( string, object )
method overload, I was able to pass a hashtable to a script. 使用此答案和
Command.Parameters.Add( string, object )
方法重载,我能够将哈希表传递给脚本。 Here is the test code: 这是测试代码:
string script = @"
param( $ht )
Write-Host $ht.Count
$ht.GetEnumerator() | foreach { Write-Host $_.Key '=' $_.Value }
";
Command command = new Command( script, isScript: true );
var hashtable = new Hashtable { { "a", "b" } };
command.Parameters.Add( "ht", hashtable );
Pipeline pipeline = runspace.CreatePipeline( );
pipeline.Commands.Add( command );
pipeline.Invoke( );
It displays 1
from $ht.Count
, and a = b
from enumerating the hashtable values. 它从
$ht.Count
显示1
,从枚举哈希表值显示a = b
。
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