我正在寻找方法来禁用C#.NET中的系统设备,给定PID& VID或设备名称.
搜索后,我在这里找到这个项目：http：//www.codeproject.com/KB/cs/HardwareHelper.aspx
但是我需要一些可以在XP,Vista& Windows 7(x86和x64操作系统)…我链接的项目仅适用于XP和Vista x86 …即使运行具有管理员权限的应用程序.
有没有人知道可以在所有操作系统上运行的解决方案/库？
谢谢.
解决方法
看起来drf的这个版本有两件事给你带来麻烦.您的x64问题是由SP_DEVINFO_DATA引起的,其中有一个需要IntPtr的uint.第二个是SetupDiGetDevicePropertyW函数是Vista,不能在XP上运行.
这是一个修正了这两个问题的版本.我在XPx86和Win7X64上测试为x86和AnyCPU.
public static class DisableHardware
{
const uint DIF_PROPERTYCHANGE = 0x12;
const uint DICS_ENABLE = 1;
const uint DICS_DISABLE = 2; // disable device
const uint DICS_FLAG_GLOBAL = 1; // not profile-specific
const uint DIGCF_ALLCLASSES = 4;
const uint DIGCF_PRESENT = 2;
const uint ERROR_INVALID_DATA = 13;
const uint ERROR_NO_MORE_ITEMS = 259;
const uint ERROR_ELEMENT_NOT_FOUND = 1168;
static DEVPROPKEY DEVPKEY_Device_DeviceDesc;
static DEVPROPKEY DEVPKEY_Device_HardwareIds;
[StructLayout(LayoutKind.Sequential)]
struct SP_CLASSINSTALL_HEADER
{
public UInt32 cbSize;
public UInt32 InstallFunction;
}
[StructLayout(LayoutKind.Sequential)]
struct SP_PROPCHANGE_PARAMS
{
public SP_CLASSINSTALL_HEADER ClassInstallHeader;
public UInt32 StateChange;
public UInt32 Scope;
public UInt32 HwProfile;
}
[StructLayout(LayoutKind.Sequential)]
struct SP_DEVINFO_DATA
{
public UInt32 cbSize;
public Guid classGuid;
public UInt32 devInst;
public IntPtr reserved; // CHANGE #1 - was UInt32
}
[StructLayout(LayoutKind.Sequential)]
struct DEVPROPKEY
{
public Guid fmtid;
public UInt32 pid;
}
[DllImport("setupapi.dll",SetLastError = true)]
static extern IntPtr SetupDiGetClassDevsW(
[In] ref Guid ClassGuid,[MarshalAs(UnmanagedType.LPWStr)]
string Enumerator,IntPtr parent,UInt32 flags);
[DllImport("setupapi.dll",SetLastError = true)]
static extern bool SetupDiDestroyDeviceInfoList(IntPtr handle);
[DllImport("setupapi.dll",SetLastError = true)]
static extern bool SetupDiEnumDeviceInfo(IntPtr deviceInfoSet,UInt32 memberIndex,[Out] out SP_DEVINFO_DATA deviceInfoData);
[DllImport("setupapi.dll",SetLastError = true)]
static extern bool SetupDiSetClassInstallParams(
IntPtr deviceInfoSet,[In] ref SP_DEVINFO_DATA deviceInfoData,[In] ref SP_PROPCHANGE_PARAMS classInstallParams,UInt32 ClassInstallParamsSize);
[DllImport("setupapi.dll",SetLastError = true)]
static extern bool SetupDiChangeState(
IntPtr deviceInfoSet,[In] ref SP_DEVINFO_DATA deviceInfoData);
[DllImport("setupapi.dll",SetLastError = true)]
static extern bool SetupDiGetDevicePropertyW(
IntPtr deviceInfoSet,[In] ref SP_DEVINFO_DATA DeviceInfoData,[In] ref DEVPROPKEY propertyKey,[Out] out UInt32 propertyType,IntPtr propertyBuffer,UInt32 propertyBufferSize,out UInt32 requiredSize,SetLastError = true)]
static extern bool SetupDiGetDeviceRegistryPropertyW(
IntPtr DeviceInfoSet,[In] ref SP_DEVINFO_DATA DeviceInfoData,UInt32 Property,[Out] out UInt32 PropertyRegDataType,IntPtr PropertyBuffer,UInt32 PropertyBufferSize,[In,Out] ref UInt32 RequiredSize
);
static DisableHardware()
{
DisableHardware.DEVPKEY_Device_DeviceDesc = new DEVPROPKEY();
DEVPKEY_Device_DeviceDesc.fmtid = new Guid(
0xa45c254e,0xdf1c,0x4efd,0x80,0x20,0x67,0xd1,0x46,0xa8,0x50,0xe0);
DEVPKEY_Device_DeviceDesc.pid = 2;
DEVPKEY_Device_HardwareIds = new DEVPROPKEY();
DEVPKEY_Device_HardwareIds.fmtid = new Guid(
0xa45c254e,0xe0);
DEVPKEY_Device_HardwareIds.pid = 3;
}
public static void DisableDevice(Func<string,bool> filter,bool disable = true)
{
IntPtr info = IntPtr.Zero;
Guid NullGuid = Guid.Empty;
try
{
info = SetupDiGetClassDevsW(
ref NullGuid,null,IntPtr.Zero,DIGCF_ALLCLASSES);
CheckError("SetupDiGetClassDevs");
SP_DEVINFO_DATA devdata = new SP_DEVINFO_DATA();
devdata.cbSize = (UInt32)Marshal.SizeOf(devdata);
// Get first device matching device criterion.
for (uint i = 0; ; i++)
{
SetupDiEnumDeviceInfo(info,i,out devdata);
// if no items match filter,throw
if (Marshal.GetLastWin32Error() == ERROR_NO_MORE_ITEMS)
CheckError("No device found matching filter.",0xcffff);
CheckError("SetupDiEnumDeviceInfo");
string devicepath = GetStringPropertyForDevice(info,devdata,1); // SPDRP_HARDWAREID
// Uncomment to print name/path
//Console.WriteLine(GetStringPropertyForDevice(info,// devdata,DEVPKEY_Device_DeviceDesc));
//Console.WriteLine(" {0}",devicepath);
if (devicepath != null && filter(devicepath)) break;
}
SP_CLASSINSTALL_HEADER header = new SP_CLASSINSTALL_HEADER();
header.cbSize = (UInt32)Marshal.SizeOf(header);
header.InstallFunction = DIF_PROPERTYCHANGE;
SP_PROPCHANGE_PARAMS propchangeparams = new SP_PROPCHANGE_PARAMS();
propchangeparams.ClassInstallHeader = header;
propchangeparams.StateChange = disable ? DICS_DISABLE : DICS_ENABLE;
propchangeparams.Scope = DICS_FLAG_GLOBAL;
propchangeparams.HwProfile = 0;
SetupDiSetClassInstallParams(info,ref devdata,ref propchangeparams,(UInt32)Marshal.SizeOf(propchangeparams));
CheckError("SetupDiSetClassInstallParams");
SetupDiChangeState(
info,ref devdata);
CheckError("SetupDiChangeState");
}
finally
{
if (info != IntPtr.Zero)
SetupDiDestroyDeviceInfoList(info);
}
}
private static void CheckError(string message,int lasterror = -1)
{
int code = lasterror == -1 ? Marshal.GetLastWin32Error() : lasterror;
if (code != 0)
throw new ApplicationException(
String.Format("Error disabling hardware device (Code {0}): {1}",code,message));
}
private static string GetStringPropertyForDevice(IntPtr info,SP_DEVINFO_DATA devdata,uint propId)
{
uint proptype,outsize;
IntPtr buffer = IntPtr.Zero;
try
{
uint buflen = 512;
buffer = Marshal.AllocHGlobal((int)buflen);
outsize=0;
// CHANGE #2 - Use this instead of SetupDiGetDeviceProperty
SetupDiGetDeviceRegistryPropertyW(
info,propId,out proptype,buffer,buflen,ref outsize);
byte[] lbuffer = new byte[outsize];
Marshal.Copy(buffer,lbuffer,(int)outsize);
int errcode = Marshal.GetLastWin32Error();
if (errcode == ERROR_INVALID_DATA) return null;
CheckError("SetupDiGetDeviceProperty",errcode);
return Encoding.Unicode.GetString(lbuffer);
}
finally
{
if (buffer != IntPtr.Zero)
Marshal.FreeHGlobal(buffer);
}
}
}
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