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>
/// 網絡設置類，設置網絡的各種參數（DNS、網關、子網掩碼、IP）
/// /summary>
public class NetworkSetting
{
public NetworkSetting()
{
// 構造函數邏輯
}

/// summary>
/// 設置DNS
/// /summary>
/// param name="dns">/param>
public static void SetDNS(string[] dns)
{
SetIPAddress(null, null, null, dns);
}
/// summary>
/// 設置網關
/// /summary>
/// param name="getway">/param>
public static void SetGetWay(string getway)
{
SetIPAddress(null, null, new string[] { getway }, null);
}
/// summary>
/// 設置網關
/// /summary>
/// param name="getway">/param>
public static void SetGetWay(string[] getway)
{
SetIPAddress(null, null, getway, null);
}
/// summary>
/// 設置IP地址和掩碼
/// /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>
/// 設置IP地址，掩碼和網關
/// /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>
/// 設置IP地址，掩碼，網關和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)
{
//如果沒有啟用IP設置的網絡設備則跳過
if (!(bool) mo["IPEnabled"])
continue;

//設置IP地址和掩碼
if (ip != null submask != null)
{
inPar = mo.GetMethodParameters("EnableStatic");
inPar["IPAddress"] = ip;
inPar["SubnetMask"] = submask;
outPar = mo.InvokeMethod("EnableStatic", inPar, null);
}

//設置網關地址
if (getway != null)
{
inPar = mo.GetMethodParameters("SetGateways");
inPar["DefaultIPGateway"] = getway;
outPar = mo.InvokeMethod("SetGateways", inPar, null);
}

//設置DNS地址
if (dns != null)
{
inPar = mo.GetMethodParameters("SetDNSServerSearchOrder");
inPar["DNSServerSearchOrder"] = dns;
outPar = mo.InvokeMethod("SetDNSServerSearchOrder", inPar, null);
}
}
}

/// summary>
/// 啟用DHCP服務器
/// /summary>
public static void EnableDHCP()
{
ManagementClass wmi = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection moc = wmi.GetInstances();
foreach (ManagementObject mo in moc)
{
//如果沒有啟用IP設置的網絡設備則跳過
if (!(bool) mo["IPEnabled"])
continue;
//重置DNS為空
mo.InvokeMethod("SetDNSServerSearchOrder", null);
//開啟DHCP
mo.InvokeMethod("EnableDHCP", null);
}
}

/// summary>
/// 判斷是否符合IP地址格式
/// /summary>
/// param name="ip">/param>
/// returns>/returns>
public static bool IsIPAddress(string ip)
{
//將完整的IP以“.”為界限分組
string[] arr = ip.Split('.');


//判斷IP是否為四組數組成
if (arr.Length != 4)
return false;


//正則表達式，1~3位整數
string pattern = @"\d{1,3}";
for (int i = 0; i arr.Length; i++)
{
string d = arr[i];


//判斷IP開頭是否為0
if (i == 0 d == "0")
return false;


//判斷IP是否是由1~3位數組成
if (!Regex.IsMatch(d, pattern))
return false;

if (d != "0")
{
//判斷IP的每組數是否全為0
d = d.TrimStart('0');
if (d == "")
return false;

//判斷IP每組數是否大于255
if (int.Parse(d) > 255)
return false;
}
} return true;
}
}
}