重启网卡的几种方法（命令行，API，

rem 禁用网卡
netsh interface set interface 以太网 disabled
rem 启用网卡

netsh interface set interface 以太网 enabled

三、以下是网上找到的C++代码，

调试OK，需要管理员模式，requireAdministrator (/level=‘requireAdministrator‘)，不知道原文地址了，着时尴尬

方法一，VS2015 ANSI

[cpp]

// lan2.cpp : 定义控制台应用程序的入口点。

#include "stdafx.h"

#include <stdio.h>

#include <windows.h>

#include <Setupapi.h>

#include <objbase.h>

#pragma comment(lib, "Setupapi.lib")

void EnumDevices(HDEVINFO hDevInfo)

{

SP_DEVINFO_DATA DeviceInfoData = { sizeof(SP_DEVINFO_DATA) };

LPOLESTR guid;

char devName[128];

char instanceId[128];

for (int i = 0; SetupDiEnumDeviceInfo(hDevInfo, i, &DeviceInfoData); i++)

{

StringFromCLSID(DeviceInfoData.ClassGuid, &guid);

SetupDiClassNameFromGuid(&DeviceInfoData.ClassGuid, devName, 128, NULL);

//printf("%s\n", devName);

; if (!strcmp(devName, "Net"))

{

SetupDiGetDeviceInstanceId(hDevInfo, &DeviceInfoData, instanceId, 128, NULL);

//printf("instanceId1:%s\n", instanceId);

if (!strncmp(instanceId, "PCI", 3))

{

//wprintf(L"guid:%s\n", guid);

// printf("devName:%s\n", devName);

// printf("instanceId2:%s\n", instanceId);

SP_PROPCHANGE_PARAMS params = { sizeof(SP_CLASSINSTALL_HEADER) };

params.ClassInstallHeader.InstallFunction = DIF_PROPERTYCHANGE;

params.Scope = DICS_FLAG_CONFIGSPECIFIC;

<span style="color:#ff0000;"> params.StateChange = DICS_DISABLE;

</span><span style="color:#33ff33;"> //params.StateChange = DICS_ENABLE;

</span> params.HwProfile = 0;

SetupDiSetClassInstallParams(hDevInfo, &DeviceInfoData, (SP_CLASSINSTALL_HEADER*)¶ms, sizeof(SP_PROPCHANGE_PARAMS));

SetupDiChangeState(hDevInfo, &DeviceInfoData);

}

CoTaskMemFree(guid);

}

int main(int argc, char* argv[])

{

HDEVINFO hDevInfo = INVALID_HANDLE_VALUE;

hDevInfo = SetupDiGetClassDevs(NULL, NULL, NULL, DIGCF_PRESENT | DIGCF_ALLCLASSES);

if (INVALID_HANDLE_VALUE == hDevInfo)

return GetLastError();

EnumDevices(hDevInfo);

SetupDiDestroyDeviceInfoList(hDevInfo);

return 0;

}

UNICODE mode