C# windows禁用USB口
时间: 2024-09-13 22:12:27 浏览: 34
在C#中,禁用Windows系统中的USB端口通常需要借助Windows API函数或者执行特定的系统命令。可以通过调用Windows提供的PowerCfg或者SetupAPI库来实现。需要注意的是,这通常需要以管理员权限运行你的应用程序。
以下是一个示例代码,演示如何通过调用Windows的SetupAPI来禁用USB端口:
```csharp
using System;
using System.Runtime.InteropServices;
class Program
{
// 导入 SetupAPI.dll 中的函数
[DllImport("setupapi.dll", SetLastError = true)]
static extern IntPtr SetupDiGetClassDevs(ref Guid ClassGuid, IntPtr Enumerator, IntPtr hwndParent, int Flags);
[DllImport("setupapi.dll", SetLastError = true)]
static extern bool SetupDiDestroyDeviceInfoList(IntPtr DeviceInfoSet);
[DllImport("setupapi.dll", SetLastError = true)]
static extern bool SetupDiEnumDeviceInfo(IntPtr DeviceInfoSet, int MemberIndex, ref SP_DEVINFO_DATA DeviceInfoData);
[DllImport("setupapi.dll", SetLastError = true)]
static extern bool SetupDiSetClassInstallParams(IntPtr DeviceInfoSet, ref SP_DEVINFO_DATA DeviceInfoData, ref SP_PROPCHANGE_PARAMS ClassInstallParams, int ClassInstallParamsSize);
[DllImport("setupapi.dll", SetLastError = true)]
static extern bool SetupDiCallClassInstaller(int InstallFunction, IntPtr DeviceInfoSet, ref SP_DEVINFO_DATA DeviceInfoData);
const int DICS_FLAG_GLOBAL = 0x00000001;
const int DICS_FLAG_CONFIGSPECIFIC = 0x00000002;
const int DICS_ENABLE = 1;
const int DICS_DISABLE = 2;
const int DICS_FLAGмоад = DICS_FLAG_GLOBAL | DICS_FLAG_CONFIGSPECIFIC;
static Guid GUID_CLASS_USB_DEVICE = new Guid("36fc9e60-c465-11cf-8056-444553540000");
[StructLayout(LayoutKind.Sequential)]
struct SP_DEVINFO_DATA
{
public int cbSize;
public Guid ClassGuid;
public int DevInst;
public IntPtr Reserved;
}
[StructLayout(LayoutKind.Sequential)]
struct SP_PROPCHANGE_PARAMS
{
public int StateChange;
public int Scope;
public int HwProfile;
}
static void DisableUsbPort()
{
IntPtr deviceInfoSet = SetupDiGetClassDevs(ref GUID_CLASS_USB_DEVICE, IntPtr.Zero, IntPtr.Zero, DICS_FLAG_GLOBAL);
if (deviceInfoSet == IntPtr.Zero)
{
throw new Exception("无法获取设备信息集");
}
try
{
SP_DEVINFO_DATA deviceInfoData = new SP_DEVINFO_DATA();
deviceInfoData.cbSize = Marshal.SizeOf(deviceInfoData);
int index = 0;
while (SetupDiEnumDeviceInfo(deviceInfoSet, index, ref deviceInfoData))
{
SP_PROPCHANGE_PARAMS classInstallParams = new SP_PROPCHANGE_PARAMS();
classInstallParams.StateChange = DICS_DISABLE;
classInstallParams.Scope = DICS_FLAGмоад;
classInstallParams.HwProfile = 0;
if (SetupDiSetClassInstallParams(deviceInfoSet, ref deviceInfoData, ref classInstallParams, Marshal.SizeOf(classInstallParams)))
{
if (!SetupDiCallClassInstaller(DIF_PROPERTYCHANGE, deviceInfoSet, ref deviceInfoData))
{
throw new Exception("无法禁用USB设备");
}
}
else
{
throw new Exception("无法设置设备属性更改参数");
}
index++;
}
}
finally
{
SetupDiDestroyDeviceInfoList(deviceInfoSet);
}
}
static void Main(string[] args)
{
try
{
DisableUsbPort();
Console.WriteLine("USB端口已禁用。");
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
```
在上述代码中,我们首先通过`SetupDiGetClassDevs`函数获取USB设备的信息集合,然后通过`SetupDiEnumDeviceInfo`枚举每一个USB设备。接着,我们创建一个`SP_PROPCHANGE_PARAMS`结构体,设置其`StateChange`属性为`DICS_DISABLE`,表示我们想要禁用设备。然后,我们调用`SetupDiSetClassInstallParams`来设置安装参数,最后调用`SetupDiCallClassInstaller`来执行禁用操作。
需要注意的是,这段代码可能需要以管理员权限运行,因为它涉及到系统的硬件配置更改。