使用WMI EnableStatic方法时出现问题

Question

我正在尝试创建一个工具,将动态DHCP提供的IPv4地址,网关和DNS设置转换为静态配置.我曾尝试使用WMI解决这个难题,但我有一个问题,我无法弄清楚.

应用程序完成,DNS和网关已配置,但EnableStatic方法(设置IP地址和子网)已不成功,这意味着即使已设置默认网关,仍会从DHCP(带有灰色字段)接收IP.我该如何解决？

EnableStatic的ReturnValue为70(无效的IP地址).奇怪的是输入参数与我2秒前从NIC中提取的输入参数相同.

这是代码(GUI除外), http://pastebin.com/AE3dGhUz:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Management;

namespace Static_NIC_Settings_Creator
{
    public partial class Form1 : Form
    {
        private ManagementObjectCollection queryCollection;
        private string[] networkInterfaces;
        private int currentNIC;
        private string[] ipAddress;
        private string[] subnetMask;
        private string[] defaultIPGateway;
        private string[] dnsServerSearchOrder;

        public Form1()
        {
            InitializeComponent();
            getNICs();
        }

        private void convertButton_Click(object sender, EventArgs e)
        {
            if (networkInterfaces.Count() > 0)
            {
                //Get current NIC settings
                if (!getNICSettings())
                {
                    MessageBox.Show("Retrieving current NIC settings failed.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
                //Convert to static NIC settings
                if (!setNICStatic())
                {
                    MessageBox.Show("Setting NIC settings to static failed.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    return;
                }
            }
        }

        private void nicSelecter_SelectedIndexChanged(object sender, EventArgs e)
        {
            currentNIC = nicSelecter.SelectedIndex;
        }

        private void getNICs()
        {
            //Get NICS
            ManagementObjectSearcher query = new ManagementObjectSearcher("SELECT * FROM Win32_NetworkAdapterConfiguration WHERE IPEnabled = 'TRUE'");
            queryCollection = query.Get();
            //Make nic string array
            int i = queryCollection.Count;
            networkInterfaces = new string[i];
            //Fill nic string array
            i = 0;
            foreach (ManagementObject mo in queryCollection)
            {
                networkInterfaces[i] = (String)mo["Description"];
                i++;
            }
            //Fill dropbox with arraylist-data
            nicSelecter.DataSource = networkInterfaces;
        }

        private Boolean getNICSettings()
        {
            //Get selected NIC
            int i = 0;
            foreach (ManagementObject mo in queryCollection)
            {
                //Get settings for specific NIC
                if (i == currentNIC)
                {
                    try
                    {
                        ipAddress = (String[])mo["IPAddress"];
                        subnetMask = (String[])mo["IPSubnet"];
                        defaultIPGateway = (String[])mo["DefaultIPGateway"];
                        dnsServerSearchOrder = (String[])mo["DNSServerSearchOrder"];
                        return true;
                    }
                    catch (Exception e)
                    {
                        System.Windows.Forms.MessageBox.Show(e.ToString(), "Critical: Unhandled error");
                        return false;
                    }
                }
                i++;
            }
            return false;
        }

        private Boolean setNICStatic()
        {
            //Get selected NIC
            int i = 0;
            foreach (ManagementObject mo in queryCollection)
            {
                //Get settings for specific NIC
                if (i == currentNIC)
                {
                    try
                    {
                        //Set static IP and subnet mask
                        ManagementBaseObject setIP;
                        ManagementBaseObject newIP = mo.GetMethodParameters("EnableStatic");
                        newIP["IPAddress"] = ipAddress;
                        newIP["SubnetMask"] = subnetMask;
                        setIP = mo.InvokeMethod("EnableStatic", newIP, null);
                        //Set default gateway
                        ManagementBaseObject setGateway;
                        ManagementBaseObject newGateway = mo.GetMethodParameters("SetGateways");
                        newGateway["DefaultIPGateway"] = defaultIPGateway;
                        newGateway["GatewayCostMetric"] = new int[] { 1 };
                        setGateway = mo.InvokeMethod("SetGateways", newGateway, null);
                        //Set dns servers
                        ManagementBaseObject setDNS;
                        ManagementBaseObject newDNS = mo.GetMethodParameters("SetDNSServerSearchOrder");
                        newDNS["DNSServerSearchOrder"] = dnsServerSearchOrder;
                        setDNS = mo.InvokeMethod("SetDNSServerSearchOrder", newDNS, null);

                        System.Windows.Forms.MessageBox.Show("Setting NIC settings returned: " + setDNS);
                        return true;
                    }
                    catch (Exception e)
                    {
                        System.Windows.Forms.MessageBox.Show(e.ToString(), "Critical: Unhandled error");
                        return false;
                    }
                }
                i++;
            }
            //No NICs
            return false;
        }
    } //End class
}

有任何想法吗？

Answer 1

您是否也输入了IPv6地址？只是玩弄 PowerShell 似乎不喜欢它们。也许您可以发布调试时输入的实际值，这会有很大帮助。也可以尝试静态输入一些值，例如：

new string[]{"192.168.0.1"}, new string[] {"255.255.255.255"}

另外，除非您真的非常需要 C# 和 GUI，否则您可能需要考虑使用 PowerShell（当然要求它已安装），因为 WMI 在那里操作起来确实要简单得多（遗憾的是您仍然有学习曲线）。

这只是如何使用 PowerShell 的示例，您至少可以使用它进行一些测试：

Get-WmiObject Win32_NetworkAdapterConfiguration

然后获取适配器的索引然后运行，但替换您的索引号：

$obj = Get-WmiObject Win32_NetworkAdapterConfiguration | where {$_.Index -eq 1}
$obj.EnableStatic("192.168.0.1", "255.255.255.0")

要获取方法参数，只需运行：

$obj.EnableStatic

它将返回：

MemberType          : Method
OverloadDefinitions : {System.Management.ManagementBaseObject EnableStatic(System.String[]IPAddress, System.String[] SubnetMask)}
TypeNameOfValue     : System.Management.Automation.PSMethod
Value               : System.Management.ManagementBaseObject EnableStatic(System.String[]IPAddress, System.String[] SubnetMask)
Name                : EnableStatic
IsInstance          : True