how to ADD IP address in Windows 10 using C#

Question

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

Answer 1

Problem Solved, Run Exe As a administratoror, Run Visual studio as a Administrator .

I go further and added multiple IP addresses, and Subnet makst in Single Ethernet card

var newAddress = adapter.GetMethodParameters("EnableStatic");
                        newAddress["IPAddress"] = new string[] { address, address1 };
                        newAddress["SubnetMask"] = new string[] { subnetMask,subnetMask };

                        var cal1 = adapter.InvokeMethod("EnableStatic", newAddress, null);