C# Disable/Enable USB ports

问题

I want to disable/enable all usb ports at once.
I tried the following:

Changed the registry (with admin privileges):

//disable USB storage...
Microsoft.Win32.Registry.SetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR", "Start", 4, Microsoft.Win32.RegistryValueKind.DWord); 

//enable USB storage...
Microsoft.Win32.Registry.SetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR", "Start", 3, Microsoft.Win32.RegistryValueKind.DWord);

I also tried Hardware Helper Library for C# - even not detecting the devices
and Win32 API function to programmatically enable/disable device

I am using windows 8.1 64bit if it matters, and I compile the code with platform target = any CPU if it matters again.

EDIT:
Still not working.
I want to block/disable all the usb devices then even connect in the future and not only the current.
Can anyone help me?

Would appreciate your help.

回答1:

That registry key prevents the USBSTOR driver from loading. It won't unload it if it is already in use. So you will not see any effect until after reboot.

来源：https://stackoverflow.com/questions/20478042/c-sharp-disable-enable-usb-ports