更改IP地址

Question

大家好，我尝试构建一个更改IP地址的控制台应用程序，我在研究后发现的代码遇到了一些问题。在代码中，networkConfigs字样显示了一个错误，该错误提示（IDispose不包含“ Cast”的定义并且最好的扩展方法重载Queryable.Cast<ManagementObject>(IQueryable)需要一个IQueryable类型的接收器。我感谢您的任何建议和帮助。谢谢大家！！！由于代码太多，因此我将在错误代码中添加一些代码它。

                                if (!String.IsNullOrEmpty(subnetMask))
                                {
                                    newIP["SubnetMask"] = Array.ConvertAll(ipAddresses, _ => subnetMask);
                                }

                                managementObject.InvokeMethod("EnableStatic", newIP, null);
                            }

                            // Set mew gateway if needed
                            if (!String.IsNullOrEmpty(gateway))
                            {
                                using (var newGateway = managementObject.GetMethodParameters("SetGateways"))
                                {
                                    newGateway["DefaultIPGateway"] = new[] { gateway };
                                    newGateway["GatewayCostMetric"] = new[] { 1 };
                                    managementObject.InvokeMethod("SetGateways", newGateway, null);
                                }
                            }
                        }
                    }
                }
            }
        }

        /// <summary>
        /// Set's the DNS Server of the local machine
        /// </summary>
        /// <param name="nic">NIC address</param>
        /// <param name="dnsServers">Comma seperated list of DNS server addresses</param>
        /// <remarks>Requires a reference to the System.Management namespace</remarks>
        public static void SetNameservers(string nicDescription, string[] dnsServers)
        {
            using (var networkConfigMng = new ManagementClass("Win32_NetworkAdapterConfiguration"))
            {
                using (var networkConfigs = networkConfigMng.GetInstances())
                {
                    foreach (var managementObject in networkConfigs.Cast<ManagementObject>().Where(mo => (bool)mo["IPEnabled"] && (string)mo["Description"] == nicDescription))
                    {
                        using (var newDNS = managementObject.GetMethodParameters("SetDNSServerSearchOrder"))
                        {
                            newDNS["DNSServerSearchOrder"] = dnsServers;
                            managementObject.InvokeMethod("SetDNSServerSearchOrder", newDNS, null);
                        }
                    }
                }
            }
        }
    }