Reference .Net .dll from powershell script

Question

Could you please help me in referencing .Net .dll from powershell script? I'm using powershell ISE to write/debug script. I've some .net code which is referencing Nuget package in it and I want to embedded that code in powershell script.

It works well if I do copy required .dlls in C:\WINDOWS\system32\WindowsPowerShell\v1.0 and script's root(C:\TestProjects\UpdateLocalNugetRepository) path. I don't want to do that beacuse in production we can not copy .dlls to system32 folder.I know that I'm doing something wrong. Could you please help? Below is my powershell script -

$path = "C:\TestProjects\UpdateLocalNugetRepository"

$Assem =@(
        "$path\NuGet.Configuration.dll",
        "$path\System.Core.dll",
        "$path\System.dll"
         ) 

         
$Source = @” 
using NuGet.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace NuGetPSTest
{
    public class Utility
    {
  public static async Task<bool> MyMethod(string packageName, string p1, string p2)
        {
         //Here I use above mentioned .dll(Nuget.Configuration).
 }
    }

    
}

“@ 

Add-Type -ReferencedAssemblies $Assem -TypeDefinition $Source -Language CSharp  



$result = [NuGetPSTest.Utility]::MyMethod(param1,param2,param3).GetAwaiter().GetResult()
$result

Possible duplicate of [Add reference to dll in powershell 2.0](http://stackoverflow.com/questions/3360867/add-reference-to-dll-in-powershell-2-0) — Kees C. Bakker, Oct 03 '16 at 10:40
I went through provided link, but it's slightly different. .Net packages are accessible to powershell but the nuget .dll is not accessible if I don't have on both location. I want to keep this .dll in root folder only and not in sys32. — Sham, Oct 03 '16 at 10:43
This link might be of use to you: https://blogs.technet.microsoft.com/heyscriptingguy/2010/11/11/use-powershell-to-work-with-the-net-framework-classes/ — Kees C. Bakker, Oct 03 '16 at 10:44

score 1 · Answer 1 · answered Oct 03 '16 at 10:42

1

You can use the Add-Type snippet to load DLL's:

Add-Type -Path "$path\NuGet.Configuration.dll"
Add-Type -Path "$path\System.Core.dll"
Add-Type -Path "$path\System.dll"

.Net DLL's can be added like this:

Add-Type -AssemblyName System.ServiceProcess

Check: https://blogs.technet.microsoft.com/heyscriptingguy/2010/11/11/use-powershell-to-work-with-the-net-framework-classes/

answered Oct 03 '16 at 10:42

Kees C. Bakker

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Sure..Let me give it a try. – Sham Oct 03 '16 at 10:45
You might want to use some environment variables to solve paths: https://technet.microsoft.com/en-us/library/ff730964.aspx – Kees C. Bakker Oct 03 '16 at 10:46
It's giving me below error - The type or namespace name 'Configuration' does not exist in the namespace 'NuGet' (are you missing an assembly reference?) – Sham Oct 03 '16 at 11:45
Can be a host of things... this is a more generic error. – Kees C. Bakker Oct 03 '16 at 11:47
Only issue, I want to fix is that I don't want to copy .dlls to system32(C:\WINDOWS\system32\WindowsPowerShell\v1.0) folder. – Sham Oct 03 '16 at 12:18

score 1 · Answer 2 · answered Oct 05 '16 at 08:51

I've found the solution for issue, need to do Add-Type before referring in assemblies to register another type. Below is my updated code.

$path = "C:\TestProjects\UpdateLocalNugetRepository"

Add-Type -Path "$path\NuGet.Configuration.dll"
Add-Type -Path "$path\System.Core.dll"
Add-Type -Path "$path\System.dll"

$Assem =@(
        "$path\NuGet.Configuration.dll",
        "$path\System.Core.dll",
        "$path\System.dll"
         ) 

         
$Source = @” 
using NuGet.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;

namespace NuGetPSTest
{
    public class Utility
    {
  public static async Task<bool> MyMethod(string packageName, string p1, string p2)
        {
         //Here I use above mentioned .dll(Nuget.Configuration).
 }
    }

    
}

“@ 

Add-Type -ReferencedAssemblies $Assem -TypeDefinition $Source -Language CSharp  



$result = [NuGetPSTest.Utility]::MyMethod(param1,param2,param3).GetAwaiter().GetResult()
$result

Reference .Net .dll from powershell script

2 Answers2

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