利用PowerShell修改网络配置
title: 利用PowerShell修改网络配置
date: 2022-03-30
categories: 编程
tags:
- PowerShell
- 网络
- Windows
前言
修改IP、网关、子网掩码、DNS等配置时需要打开网络配置器配置，有些麻烦。尤其是经常需要重复性操作时（例如去学校图书馆蹭网）。用PowerShell脚本自动修改，方便简单而且十分轻量，程序只需占用1KB空间。
新的修改方法：Common Information Model (CIM)
参考[1]
param([int] $inputNum)
$cim = Get-CimInstance Win32_NetworkAdapterConfiguration -Filter "IPEnabled = True"
function CheckReturn {
param ($obj)
if ($obj.ReturnValue -eq 0) {
"Successed"
}
else {
"Failed"
}
}
if ($inputNum -eq 0) {
CheckReturn(Invoke-CimMethod $cim -MethodName EnableDHCP)
CheckReturn(Invoke-CimMethod $cim -MethodName SetDNSServerSearchOrder)
}
elseif (($inputNum -gt 0) -and ($inputNum -lt 254)) {
CheckReturn(Invoke-CimMethod $cim -MethodName EnableStatic -Arguments @{
IPAddress = @("10.200.200." + $inputNum.ToString());
SubnetMask = @("255.255.255.0")
})
CheckReturn(Invoke-CimMethod $cim -MethodName SetGateways -Arguments @{
DefaultIPGateway = @("10.200.200.254")
})
CheckReturn(Invoke-CimMethod $cim -MethodName SetDNSServerSearchOrder -Arguments @{
DNSServerSearchOrder = @("114.114.114.114")
})
}
else {
"Input number between 1 to 253 to set network adapter, or 0 to disable network adapter"
}
旧的修改方法：Windows Management Instrumentation (WMI)
参考[2]
param([int] $inputNum)
$wmi = Get-WmiObject Win32_NetworkAdapterConfiguration -Filter "IPEnabled = True"
function CheckReturn {
param ($obj)
if ($obj.ReturnValue -eq 0) {
"Successed"
}
else {
"Failed"
}
}
if ($inputNum -eq 0)
{
CheckReturn($wmi.EnableDHCP())
CheckReturn($wmi.SetDNSServerSearchOrder())
}
elseif (($inputNum -gt 0) -and ($inputNum -lt 254))
{
CheckReturn($wmi.EnableStatic("10.200.200." + $inputNum.ToString(), "255.255.255.0"))
CheckReturn($wmi.SetGateways("10.200.200.254"))
CheckReturn($wmi.SetDNSServerSearchOrder("114.114.114.114"))
}
else
{
"Input number between 1 to 253 to set network adapter, or 0 to disable network adapter"
}
附：C#代码
#nullable enable
using System.Management;
using System.Runtime.InteropServices;
using System.Runtime.Versioning;
namespace NetworkAdapter;
[SupportedOSPlatform(nameof(OSPlatform.Windows))]
public static class NetworkAdapter
{
public static void Main()
{
while (true)
{
if (!int.TryParse(Console.ReadLine(), out var temp))
continue;
switch (temp)
{
case 0:
DisableNetworkAdapter();
return;
case > 0 and < 254:
SetNetworkAdapter("10.200.200." + temp, "255.255.255.0", "10.200.200.254", "114.114.114.114");
return;
default:
Console.WriteLine("输入错误：请输入机房电脑序号（1-253），输入0恢复默认网络设置");
break;
}
}
}
private static void SetNetworkAdapter(string ipAddress, string subnetMask, string gateway, string dns)
{
if (GetManagementObject() is { } mo)
{
var inPar = mo.GetMethodParameters("EnableStatic");
//设置ip地址和子网掩码
inPar["IPAddress"] = new[] { ipAddress };
inPar["SubnetMask"] = new[] { subnetMask };
_ = mo.InvokeMethod("EnableStatic", inPar, null!);
//设置网关地址
inPar = mo.GetMethodParameters("SetGateways");
inPar["DefaultIPGateway"] = new[] { gateway };
_ = mo.InvokeMethod("SetGateways", inPar, null!);
//设置DNS
inPar = mo.GetMethodParameters("SetDNSServerSearchOrder");
inPar["DNSServerSearchOrder"] = new[] { dns };
_ = mo.InvokeMethod("SetDNSServerSearchOrder", inPar, null!);
}
}
private static void DisableNetworkAdapter()
{
if (GetManagementObject() is { } mo)
{
_ = mo.InvokeMethod("SetDNSServerSearchOrder", Array.Empty<object>());
_ = mo.InvokeMethod("EnableDHCP", Array.Empty<object>());
}
}
private static ManagementObject? GetManagementObject()
{
var mc = new ManagementClass("Win32_NetworkAdapterConfiguration");
var moc = mc.GetInstances();
foreach (var o in moc)
if ((bool)o["IPEnabled"])
return (ManagementObject)o;
return null;
}
}
完整代码（Github）
https://github.com/Poker-sang/NetworkAdapter