C# 获取本地IP地址以及MAC地址

 

C# 获取本地IP地址以及MAC地址

 

1、通过主机名获取局域网IP地址；

            try

            {

                IPHostEntry ipHostEntry = Dns.GetHostEntry(txtHost.Text);//传递计算机名

                if (ipHostEntry.Aliases.Length > 0)

                {

                    foreach (string alias in ipHostEntry.Aliases)

                        txtIP.Text = alias;

                }

                //获取IP地址

                foreach (IPAddress addr in ipHostEntry.AddressList)

                    txtIPAddress.Text = addr.ToString();//获取IP地址

            }

            catch

            {

                MessageBox.Show("错误的主机名。");

            }

2、通过局域网IP地址获取主机名；

try

            {

               IPHostEntry ipHostEntry = Dns.GetHostByAddress(txtIP.Text); ;//传递IP地址

               txtHostName.Text = ipHostEntry.HostName.ToString()//取得主机名

            }

            catch

            {

               MessageBox.Show("错误的IP地址。");

            }

3、通过局域网IP地址获取Mac地址

public static string ReadMac(string ip)//传递IP地址,即可返回MAC地址

        {

            string mac = "";

            System.Diagnostics.Process p = new System.Diagnostics.Process();

            p.StartInfo.FileName = "nbtstat";

            p.StartInfo.Arguments = "-a " + ip;

            p.StartInfo.UseShellExecute = false;

            p.StartInfo.CreateNoWindow = true;

            p.StartInfo.RedirectStandardOutput = true;            

            p.Start();

            string output = p.StandardOutput.ReadToEnd();

            int len = output.IndexOf("MAC Address = ");

            if(len>0)

            {

                mac = output.Substring(len + 14, 17);

            }            

            p.WaitForExit();            

            return mac;

        }