I need help getting powershell to run c# code

Question

I found a technet blog saying you could run c# code in powershell, so I ended up giving it a try. When I try to run the following powershell script I get 2 errors and I'm not sure how to resolve them. Does anyone know the fix for the errors below?

Technet Blog: Using CSharp (C#) code in Powershell scripts

Add-PSSnapin Microsoft.SharePoint.PowerShell

$Assem = {
    "Microsoft.SharePoint, Version=15.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c"
         }

$Source = @"
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint;
using Microsoft.SharePoint.Administration;
using System.IO;

namespace TurnAlertsOnOff
{
    class onOff
    {
        static void Main(string[] args)
        {
            #code goes here.


        }
    }
}
"@


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

[TurnAlertsOnOff.onOff]::Main()

Error 1

Add-Type : Illegal characters in path.
At C:\Users\testUser\Desktop\test.ps1:115 char:1
+ Add-Type -ReferencedAssemblies $Assem -TypeDefinition $Source -Language CSharp
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [Add-Type], ArgumentException
    + FullyQualifiedErrorId : System.ArgumentException,Microsoft.PowerShell.Commands.AddTypeCommand

Error 2 (Not caused by first error.)

Unable to find type [TurnAlertsOnOff.onOff]: make sure that the assembly containing this type is loaded.
At C:\Users\testUser\Desktop\test.ps1:117 char:1
+ [TurnAlertsOnOff.onOff]::Main()
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (TurnAlertsOnOff.onOff:TypeName) [], RuntimeException
    + FullyQualifiedErrorId : TypeNotFound

Can you include a link to the blog?

AdamBT
– AdamBT

2014-09-05 15:07:58 +00:00
Commented Sep 5, 2014 at 15:07 — AdamBT
– AdamBT, Commented Sep 5, 2014 at 15:07
Added the link.

zingwing
– zingwing

2014-09-05 15:10:38 +00:00
Commented Sep 5, 2014 at 15:10 — zingwing
– zingwing, Commented Sep 5, 2014 at 15:10

wjervis · Accepted Answer · 2014-09-05 15:24:10Z

5

When I've ran C# within PowerShell, I've done the assembly bit differently (I'm in O365, so only use CSOM):

$path = "path to folder containing dll's (e.g.,ISAPI folder in 15 Hive)"
$assemblies = @(
    "$path\Microsoft.SharePoint.Client.dll",
    "$path\Microsoft.SharePoint.Client.Runtime.dll"
    "System.Core"
)

$cSharp = @"
using System;
using System.Management.Automation;
using System.Security;
using Microsoft.SharePoint.Client;
using Microsoft.SharePoint.Client.Utilities;

namespace SPClient
{
    public class SharePointPS
    {
        public static void Main()
        {
            // Code here
        }
    }
}
"@

Add-Type -TypeDefinition $cSharp -ReferencedAssemblies $assemblies
[SPClient.SharePointPS]::Main()

Never had any issues with it. System.Management.Automation and System.Security were used for handling the O365 authentication, so they are not necessary for you.

answered Sep 5, 2014 at 15:24

wjervis

5,73826 silver badges46 bronze badges

Thanks I changed the structure of my assembly and Add-Type and it resolved the first error. Now I need to figure out way I'm getting the second error.

zingwing
– zingwing

2014-09-05 15:52:11 +00:00
Commented Sep 5, 2014 at 15:52
1

Try specifing the class and function as public class/method

wjervis
– wjervis

2014-09-05 15:57:48 +00:00
Commented Sep 5, 2014 at 15:57
So the path would be: $path = "C:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\ISAPI"

Underverse
– Underverse

2016-03-17 00:56:00 +00:00
Commented Mar 17, 2016 at 0:56
@Underverse Yes, that should be the path.

wjervis
– wjervis

2016-03-17 15:16:48 +00:00
Commented Mar 17, 2016 at 15:16

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