/// <summary>
/// Find the current registry root being used by this instance of VS
/// </summary>
/// <returns></returns>
RegistryKey GetRegistryRoot()
{
ThreadHelper.ThrowIfNotOnUIThread();
ILocalRegistry4 localReg = Package.GetGlobalService(typeof(SLocalRegistry)) as ILocalRegistry4;
ErrorHandler.ThrowOnFailure(localReg.GetLocalRegistryRootEx((uint)__VsLocalRegistryType.RegType_Configuration, out uint rootHandle, out string rootName));
RegistryKey rootKey;
if ((int)rootHandle == (int)__VsLocalRegistryRootHandle.RegHandle_LocalMachine)
{
rootKey = Registry.LocalMachine.OpenSubKey(rootName);
}
else if ((int)rootHandle == (int)__VsLocalRegistryRootHandle.RegHandle_CurrentUser)
{
rootKey = Registry.CurrentUser.OpenSubKey(rootName);
}
else
{
throw new InvalidOperationException();
}
return(rootKey);
}
/// <summary>
/// Returns a RegistryKey object for the root of a given storage type.
/// It is up to the caller to dispose the returned object.
/// </summary>
/// <param name="provider">The service provider to use to access the Visual Studio's services.</param>
/// <param name="registryType">The type of registry storage to open.</param>
/// <param name="writable">Flag to indicate is the key should be writable.</param>
public static RegistryKey RegistryRoot(IServiceProvider provider, __VsLocalRegistryType registryType, bool writable)
{
if (null == provider)
{
throw new ArgumentNullException("provider");
}
// The current implementation of the shell supports only RegType_UserSettings and
// RegType_Configuration, so for any other values we have to return not implemented.
if ((__VsLocalRegistryType.RegType_UserSettings != registryType) &&
(__VsLocalRegistryType.RegType_Configuration != registryType))
{
throw new NotSupportedException();
}
// Try to get the new ILocalRegistry4 interface that is able to handle the new
// registry paths.
ILocalRegistry4 localRegistry = provider.GetService(typeof(SLocalRegistry)) as ILocalRegistry4;
if (null != localRegistry)
{
uint rootHandle;
string rootPath;
if (ErrorHandler.Succeeded(localRegistry.GetLocalRegistryRootEx((uint)registryType, out rootHandle, out rootPath)))
{
// Check if we have valid data.
__VsLocalRegistryRootHandle handle = (__VsLocalRegistryRootHandle)rootHandle;
if (!string.IsNullOrEmpty(rootPath) && (__VsLocalRegistryRootHandle.RegHandle_Invalid != handle))
{
// Check if the root is inside HKLM or HKCU. Note that this does not depends only from
// the registry type, but also from instance-specific data like the RANU flag.
RegistryKey root = (__VsLocalRegistryRootHandle.RegHandle_LocalMachine == handle) ? Registry.LocalMachine : Registry.CurrentUser;
return(root.OpenSubKey(rootPath, writable));
}
}
}
// We are here if the usage of the new interface failed for same reason, so we have to fall back to
// the ond way to access the registry.
ILocalRegistry2 oldRegistry = provider.GetService(typeof(SLocalRegistry)) as ILocalRegistry2;
if (null == oldRegistry)
{
// There is something wrong with this installation or this service provider.
return(null);
}
string registryPath;
NativeMethods.ThrowOnFailure(oldRegistry.GetLocalRegistryRoot(out registryPath));
if (string.IsNullOrEmpty(registryPath))
{
return(null);
}
RegistryKey regRoot = (__VsLocalRegistryType.RegType_Configuration == registryType) ? Registry.LocalMachine : Registry.CurrentUser;
return(regRoot.OpenSubKey(registryPath, writable));
}