How to ADD IP address in windows 10 using C#

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C#

PowerShell

I want to add multiple IP addresses in my Ethernet port.
I tried below both way

1. using Management Class

public void setIP()
            {
                string myDesc = "Realtek USB GbE Family Controller";
                string gateway = "10.210.255.1";
                string subnetMask = "255.255.255.0";
                string address = "10.210.255.102";
    
                var adapterConfig = new ManagementClass("Win32_NetworkAdapterConfiguration");
                var networkCollection = adapterConfig.GetInstances();
    
                foreach (ManagementObject adapter in networkCollection)
                {
                    string description = adapter["Description"] as string;
                    if (string.Compare(description,
                        myDesc, StringComparison.InvariantCultureIgnoreCase) == 0)
                    {
                        try
                        {
                            // Set DefaultGateway
                            var newGateway = adapter.GetMethodParameters("SetGateways");
                            newGateway["DefaultIPGateway"] = new string[] { gateway };
                            newGateway["GatewayCostMetric"] = new int[] { 1 };
    
                            // Set IPAddress and Subnet Mask
                            var newAddress = adapter.GetMethodParameters("EnableStatic");
                            newAddress["IPAddress"] = new string[] { address };
                            newAddress["SubnetMask"] = new string[] { subnetMask };
    
                            adapter.InvokeMethod("EnableStatic", newAddress, null);
                            adapter.InvokeMethod("SetGateways", newGateway, null);
    
                            Console.WriteLine("Updated to static IP address!");
                        }
                        catch (Exception ex)
                        {
                            Console.WriteLine("Unable to Set IP : " + ex.Message);
                        }
                    }
                }
            }

2. Using PowerShellSCript in C#

private string RunScript()
            {
    
                      string scriptText = "$iplist = \"10.210.255.102\"" + "," + " \"10.210.255.103\"" + "\nforeach ($ip in $iplist)" +"\n{" +" \nNew-NetIPAddress -InterfaceAlias \"Ethernet\" -IPAddress $ip -PrefixLength 24" +"\n}";
    
                // create Powershell runspace
    
                Runspace runspace = RunspaceFactory.CreateRunspace();
    
                // open it
    
                runspace.Open();
    
                // create a pipeline and feed it the script text
    
                Pipeline pipeline = runspace.CreatePipeline();
                pipeline.Commands.AddScript(scriptText);
    
                // add an extra command to transform the script
                // output objects into nicely formatted strings
    
                // remove this line to get the actual objects
                // that the script returns. For example, the script
    
                // "Get-Process" returns a collection
                // of System.Diagnostics.Process instances.
    
                pipeline.Commands.Add("Out-String");
    
                // execute the script
    
                var results = pipeline.Invoke();
    
                // close the runspace
    
                runspace.Close();
    
                // convert the script result into a single string
    
                StringBuilder stringBuilder = new StringBuilder();
                foreach (PSObject obj in results)
                {
                    stringBuilder.AppendLine(obj.ToString());
                }
    
                return stringBuilder.ToString();
            }

Both are not working, my code working properly it's not going inside catch,
but not able to add IP,
even I can add IP using running power script file from Windows PowerShell, but the same script is not working inside C#,

all I am trying to add a number of IP address in Single Ethernet card

Note: yes I have Admin rights, I already perform this manually and using PowerShell tool power script.
one more thing,
every time i have to right-click window PowerShell and run as administrator to run my scrip

What I have tried:

Please check above Code for management class and Power Shell,
I tried these both, but still is not solved