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 

Answer 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/

Answer 2

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