WMI根据选定网卡修改IP
我用的是这样的

C# code

public bool ModIP(ip myIP)        {            bool isSuccess = false;            ManagementClass mc = new ManagementClass("Win32_NetworkAdapterConfiguration");            ManagementObjectCollection moc = mc.GetInstances();            foreach (ManagementObject mo in moc)            {                if ((bool)mo["IPEnabled"])                {                    myIP.Mac = mo["MacAddress"].ToString();                    try                    {                        //设置IP地址和子网掩码                        ManagementBaseObject newIPSubMask = mo.GetMethodParameters("EnableStatic");                        newIPSubMask["IPAddress"] = new string[] { myIP.Ip };                        newIPSubMask["SubnetMask"] = new string[] { myIP.Subnetmask };                        ManagementBaseObject setIPSubMask = mo.InvokeMethod("EnableStatic", newIPSubMask, null);                        //设置                        //ManagementBaseObject newSubMask = mo.GetMethodParameters("EnableStatic");                        //newSubMask["SubnetMask"] = new string[] { myIP.Subnetmask };                        //ManagementBaseObject setSubMask = mo.InvokeMethod("EnableStatic", newSubMask, null);                        //设置网关                        ManagementBaseObject newGate = mo.GetMethodParameters("SetGateways");                        newGate["DefaultIPGateway"] = new string[] { myIP.Gateway };                        ManagementBaseObject setGateway = mo.InvokeMethod("SetGateways", newGate, null);                        //设置DNS                        ManagementBaseObject newDNS = mo.GetMethodParameters("SetDNSServerSearchOrder");                        newDNS["DNSServerSearchOrder"] = new string[] { myIP.Dns1, myIP.Dns2 };                        ManagementBaseObject setDNS = mo.InvokeMethod("SetDNSServerSearchOrder", newDNS, null);                        isSuccess = true;                    }                    catch (Exception ex)                    {                        MessageBox.Show("原因：" + ex);                        isSuccess = false;                    }                }            }            return isSuccess;        }

但是这个的不好之处就是会把现在使用的所有网卡，像无线啊什么的IP地址都改了，想弄个下拉条选择网卡，根据选择的网卡来修改IP。
我弄了一个只能读取网卡的

C# code

string carName = "";            ManagementObjectSearcher search = new ManagementObjectSearcher                ("SELECT * FROM Win32_NetWorkAdapterConfiguration");            foreach (ManagementObject sear in search.Get())            {                if (sear["IPAddress"] != null)                {                    carName = sear["Description"].ToString().Trim();                    comboBox1.Items.Add(carName);                }            }            comboBox1.SelectedIndex = 0;

高手来解决一下吧

[解决办法]
ding!!