(windows app C#) need help scanning local network devices on windows 10

Question

So when you type "arp - a" into a command prompt it gives a list of local devices and MAC address connected to my internet. I want to know how to turn That into a windows app form in C#

If anyone can help that would be nice

Answer 1

We can use Process to call cmd to execute this command, and then convert the result into an object in c#.

    class Program  
    {  
        static void Main(string[] args)   
        {  
            ArpUtil arpHelper = new ArpUtil();  
            List<ArpItem> arpEntities = arpHelper.GetArpResult();  
            foreach (var item in arpEntities)  
            {  
                Console.WriteLine(item.Ip+"\t"+item.MacAddress+"\t"+item.Type);  
            }  
            Console.ReadLine();  
        }  
    }  
    public class ArpItem  
    {  
        public string Ip { get; set; }  
  
        public string MacAddress { get; set; }  
  
        public string Type { get; set; }  
    }  
    public class ArpUtil  
    {  
        public List<ArpItem> GetArpResult()  
        {  
            using (Process process = Process.Start(new ProcessStartInfo("arp", "-a")  
            {  
                CreateNoWindow = true,  
                UseShellExecute = false,  
                RedirectStandardOutput = true  
            }))   
            {  
                var output = process.StandardOutput.ReadToEnd();  
                return ParseArpResult(output);  
            }  
        }  
  
        private List<ArpItem> ParseArpResult(string output)  
        {  
            var lines = output.Split('\n');  
  
            var result = from line in lines  
                         let item = line.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries)  
                         where item.Count() == 4  
                         select new ArpItem()  
                         {  
                             Ip = item[0],  
                             MacAddress = item[1],  
                             Type = item[2]  
                         };  
  
            return result.ToList();  
        }  
    }  

---

If the response is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.