SCCM - Remove-CMUserAffinityFromDevice in c# (no PowerShell)

Question

Hello all

I have the task to write a program that allows me to set a primer user or delete a primer user in SCCM.

The adding (CreateRelationship) works very well, the deleting unfortunately not. What code I have I will write below.

PowerShell is out of question, because 1. the whole thing must be startable from a client system and 2. remote PowerShell is not allowed in the network :-(

So the PowerShell "Remove-CMUserAffinityFromDevice" and "Remove-CMDeviceAffinityFromUser" cmdlets do not work.

I found something under „GitHub - NickolajA/PowerShell => https://github.com/NickolajA/PowerShell“ there is the "Remove-PrimaryDeviceRelationship.ps1" however I can't port the script to C#.

I hope for your help and thank you already now

Greeting Brauschi

using Microsoft.ConfigurationManagement.ManagementProvider;
using Microsoft.ConfigurationManagement.ManagementProvider.WqlQueryEngine;


 public void RemoveFromDevice(WqlConnectionManager connection, string DeviceId, string Unique_User_Name0)
{
    try
    {


        // ?!?!?!?!??!?!?!??!?!?!



    }
    catch (Exception ex)
    {
        var TempInfo = ex.Message;
    }
}

public void AddToDevice(WqlConnectionManager connection, string DeviceId, string Unique_User_Name0)
{
    try
    {
        Dictionary<string, object> Param = new Dictionary<string, object>();
        Param.Add("MachineResourceId", DeviceId);
        Param.Add("UserAccountName", Unique_User_Name0);
        Param.Add("SourceId", "2");  //Administrative change
        Param.Add("TypeId", "1");

        IResultObject IRO = connection.ExecuteMethod("SMS_UserMachineRelationship", "CreateRelationship", Param);
    }
    catch (Exception ex)
    {
        var TempInfo = ex.Message;
    }
}

public WqlConnectionManager Connect()
{
    try
    {
        string serverName = SCCMServer;
        string userName = DomainName + "\\" + SccmAdminUser;
        string userPassword = "Passw0rd1!";

        SmsNamedValuesDictionary namedValues = new SmsNamedValuesDictionary();
        WqlConnectionManager connection = new WqlConnectionManager(namedValues);
        if (System.Net.Dns.GetHostName().ToUpper() == serverName.ToUpper())
        {
            connection.Connect(serverName);
        }
        else
        {
            connection.Connect(serverName, userName, userPassword);
        }

        return connection;
    }
    catch (SmsException ex)
    {
        return null;
    }
    catch (UnauthorizedAccessException ex)
    {
        throw;
    }
}

Excerpt from:
Script name: Remove-PrimaryDeviceRelationship.ps1
Author: Nickolaj Andersen
Contact: @NickolajA
DateCreated: 2015-04-20

foreach ($Device in $DeviceName) {
    $UserMachineRelations = Get-WmiObject -Namespace "root\SMS\site_$($SiteCode)" -Class SMS_UserMachineRelationship -ComputerName $SiteServer -Filter "ResourceName like '$($Device)'"
    if ($UserMachineRelations -ne $null) {
        if ($PSCmdlet.ShouldProcess($UserMachineRelations.__PATH, "Remove")) {
            Remove-WmiObject -InputObject $UserMachineRelations
        }
    }
}

Thanks at this point also to Nickolaj Andersen