Missing Automation from namespace 'System.Management'. Missing assembly reference

Question

System: Windows 7 Professional 64 bit, PowerShell v 2.0, no Visual Studio (can't be installed and others too)

Trying to run PowerShell from C#. This is the code snippet:

using System;
using System.Management.Automation;  

class Hello {
    static void Main(string[] args) {           
        PowerShell ps = PowerShell.Create();
        ps.AddCommand("Get-Process");
        Console.WriteLine("Process                 Id");
        Console.WriteLine("----------------------------");
        foreach (PSObject result in ps.Invoke()) {
            Console.WriteLine(
            "{0,-24}{1}",
            result.Members["ProcessName"].Value,
            result.Members["Id"].Value);
            } 
        }       
    }

Error:

e:\\foo.cs(2,25): error CS0234: The type or namespace name 'Automation' does not exist in the namespace 'System.Management' (are you missing an assembly reference?)

Since no Visual Studio is there, I am running code in raw manner. Because of error, I downloaded dll from http://www.dll-found.com/system.management.automation.dll_download.html and placed in dir as per instruction. After rebooting machine, there was no success.

First, I want to ask a general question. How to install missing assembly or dll file (only), because for some you might have to install whole Windows or PowerShell SDK or .NET Framework.

EDIT
I have place downloaded dll file in C:\\Windows\\SysWOW64, C:\\Windows\\system32, C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\v3.5 and C:\\Program Files\\Reference Assemblies\\Microsoft\\Framework\\v3.0.

I am compiling using: C:\\Windows\\Microsoft.NET\\Framework\\v3.5\\csc.exe /target:exe /out:E:\\foo.exe E:\\foo.cs

Answer 1

NuGet worked for me.

PM> Install-Package System.Management.Automation.dll -Version 10.0.10586

Answer 2

您必须对csc.exe使用/reference命令行参数，如MSDN 中所述：

C:\Windows\Microsoft.NET\Framework\v3.5\csc.exe /reference:system.management.automation.dll /target:exe /out:E:\foo.exe /E:\foo.cs

Answer 3

If you have this problem after re-targeting an old project to, for example, .NET 4.8, then it is because NuGet package names have changed.

• Uninstall the package System.Management.Automation
• Install the package Microsoft.PowerShell.5.1.ReferenceAssemblies ( NuGet )

This package name appears in the documentation of classes in the namespace System.Management.Automation .