如今网络在我们的生活工作中所起的作用越来越大，可以说离开了网络我们就无法正常的工作和生活。作为程序员我们写的程序大多数也会跟网络相关，而想要使用网络首先要将机器的网络配置设置好。而手动设置的方法显然很不可取，所以我们要让程序帮我们完成。下面是一个很常用的C#设置系统各种网络参数的一个小Demo一起看看吧。
这个Demo是通过"Win32_NetworkAdapterConfiguration"这个管理类.这里面已基本包括了IP,DNS,网关的设置信息。
在C#中使用WMI还是比较简单的:
using System;using System.Collections.Generic;using System.Text;using System;using System.Collections;using System.Text;using System.Management;using System.Text.RegularExpressions;namespace Demo{/// <summary>/// 网络设置类，设置网络的各种参数（DNS、网关、子网掩码、IP）/// </summary>public class NetworkSetting{public NetworkSetting(){// 构造函数逻辑}/// <summary>/// 设置DNS/// </summary>/// <param name="dns"></param>public static void SetDNS(string[] dns){SetIPAddress(null, null, null, dns);}/// <summary>/// 设置网关/// </summary>/// <param name="getway"></param>public static void SetGetWay(string getway){SetIPAddress(null, null, new string[] { getway }, null);}/// <summary>/// 设置网关/// </summary>/// <param name="getway"></param>public static void SetGetWay(string[] getway){SetIPAddress(null, null, getway, null);}/// <summary>/// 设置IP地址和掩码/// </summary>/// <param name="ip"></param>/// <param name="submask"></param>public static void SetIPAddress(string ip, string submask){SetIPAddress(new string[] { ip }, new string[] { submask }, null, null);}/// <summary>/// 设置IP地址，掩码和网关/// </summary>/// <param name="ip"></param>/// <param name="submask"></param>/// <param name="getway"></param>public static void SetIPAddress(string ip, string submask, string getway){SetIPAddress(new string[] { ip }, new string[] { submask }, new string[] { getway }, null);}/// <summary>/// 设置IP地址，掩码，网关和DNS/// </summary>/// <param name="ip"></param>/// <param name="submask"></param>/// <param name="getway"></param>/// <param name="dns"></param>public static void SetIPAddress(string[] ip, string[] submask, string[] getway, string[] dns){ManagementClass wmi = new ManagementClass("Win32_NetworkAdapterConfiguration");ManagementObjectCollection moc = wmi.GetInstances();ManagementBaseObject inPar = null;ManagementBaseObject outPar = null;foreach (ManagementObject mo in moc){//如果没有启用IP设置的网络设备则跳过if (!(bool) mo["IPEnabled"])continue;//设置IP地址和掩码if (ip != null && submask != null){inPar = mo.GetMethodParameters("EnableStatic");inPar["IPAddress"] = ip;inPar["SubnetMask"] = submask;outPar = mo.InvokeMethod("EnableStatic", inPar, null);}//设置网关地址if (getway != null){inPar = mo.GetMethodParameters("SetGateways");inPar["DefaultIPGateway"] = getway;outPar = mo.InvokeMethod("SetGateways", inPar, null);}//设置DNS地址if (dns != null){inPar = mo.GetMethodParameters("SetDNSServerSearchOrder");inPar["DNSServerSearchOrder"] = dns;outPar = mo.InvokeMethod("SetDNSServerSearchOrder", inPar, null);}}} /// <summary>/// 启用DHCP服务器/// </summary>public static void EnableDHCP(){ManagementClass wmi = new ManagementClass("Win32_NetworkAdapterConfiguration");ManagementObjectCollection moc = wmi.GetInstances();foreach (ManagementObject mo in moc){//如果没有启用IP设置的网络设备则跳过if (!(bool) mo["IPEnabled"])continue;//重置DNS为空mo.InvokeMethod("SetDNSServerSearchOrder", null);//开启DHCPmo.InvokeMethod("EnableDHCP", null);}} /// <summary>/// 判断是否符合IP地址格式/// </summary>/// <param name="ip"></param>/// <returns></returns>public static bool IsIPAddress(string ip){//将完整的IP以“.”为界限分组string[] arr = ip.Split('.');//判断IP是否为四组数组成if (arr.Length != 4)return false; //正则表达式，1~3位整数string pattern = @"\d{1,3}";for (int i = 0; i < arr.Length; i++){string d = arr[i];//判断IP开头是否为0if (i == 0 && d == "0")return false;//判断IP是否是由1~3位数组成if (!Regex.IsMatch(d, pattern))return false; if (d != "0"){//判断IP的每组数是否全为0d = d.TrimStart('0');if (d == "")return false; //判断IP每组数是否大于255if (int.Parse(d) > 255)return false;}} return true;}}}
好了，写好上面这个类以后，就等着哪里需要然后NEW一个就可以了。很简单吧，如果遇到设置失败的情况，可能是因为权限不够，执行C#默认以管理员身份运行程序
