public void Dispose()
{
if (_hkey != null)
{
if (!IsSystemKey())
{
try
{
_hkey.Dispose();
}
catch (IOException)
{
// we don't really care if the handle is invalid at this point
}
finally
{
_hkey = null;
}
}
else if (IsPerfDataKey())
{
ClosePerfDataKey();
}
}
}
void IDisposable.Dispose()
{
if (_hkey != null)
{
_hkey.Dispose();
}
}
private void Dispose(bool disposing)
{
if (hkey != null)
{
if (!IsSystemKey())
{
try {
hkey.Dispose();
}
catch (IOException) {
// we don't really care if the handle is invalid at this point
}
finally
{
hkey = null;
}
}
else if (disposing && IsPerfDataKey())
{
// System keys should never be closed. However, we want to call RegCloseKey
// on HKEY_PERFORMANCE_DATA when called from PerformanceCounter.CloseSharedResources
// (i.e. when disposing is true) so that we release the PERFLIB cache and cause it
// to be refreshed (by re-reading the registry) when accessed subsequently.
// This is the only way we can see the just installed perf counter.
// NOTE: since HKEY_PERFORMANCE_DATA is process wide, there is inherent race condition in closing
// the key asynchronously. While Vista is smart enough to rebuild the PERFLIB resources
// in this situation the down level OSes are not. We have a small window between
// the dispose below and usage elsewhere (other threads). This is By Design.
// This is less of an issue when OS > NT5 (i.e Vista & higher), we can close the perfkey
// (to release & refresh PERFLIB resources) and the OS will rebuild PERFLIB as necessary.
SafeRegistryHandle.RegCloseKey(RegistryKey.HKEY_PERFORMANCE_DATA);
}
}
}
public void Dispose()
{
if (userProfile != null && !userProfile.IsClosed)
{
try
{
Unload();
}
catch
{
// Don't throw in dispose method
}
userProfile.Dispose();
}
}
protected void Dispose(bool disposing)
{
// Ordinarily, we release unmanaged resources here;
// but all are wrapped by safe handles.
// Release disposable objects.
if (disposing)
{
if (hExtHandle != null)
{
hExtHandle.Dispose();
}
if (hAppIdHandle != null)
{
hAppIdHandle.Dispose();
}
}
}
private void Dispose(bool disposing)
{
if (hkey != null)
{
if (!IsSystemKey())
{
try
{
hkey.Dispose();
}
catch (IOException)
{
// we don't really care if the handle is invalid at this point
}
finally
{
hkey = null;
}
}
}
}
//
protected virtual void Dispose(bool disposing)
{
if (_disposed == true)
{
return;
}
if (disposing == true)
{
// dispose of our underlying registry key's access handle
_handle.Dispose();
}
_disposed = true;
// trigger the notification pool to remove our entry (if we were subscribed)
try
{
// TODO: consider having a "SubscribedToNotifications" flag in the RegistryKey (and using that flag to determine if this is necessary/appropriate)
s_registryKeyNotifyPoolUpdatedEvent.Set();
}
catch { }
}
internal static RegistryDataKey Open(string registryPath, bool fCreateIfNotExist)
{
// Sanity check
if (string.IsNullOrEmpty(registryPath))
{
return(null);
}
// If the last character is a '\', get rid of it
registryPath = registryPath.Trim(new char[] { '\\' });
string rootPath = GetFirstKeyAndParseRemainder(ref registryPath);
// Get the native registry handle and subkey path
SafeRegistryHandle regHandle = RootHKEYFromRegPath(rootPath);
// If there's no root, we can't do anything.
if (regHandle == null || regHandle.IsInvalid)
{
regHandle?.Dispose();
return(null);
}
RegistryDataKey rootKey = new(rootPath, regHandle);
// If the path was only a root, we can directly return the key; otherwise,
// we need to open a subkey and return that.
if (string.IsNullOrEmpty(registryPath))
{
return(rootKey);
}
else
{
RegistryDataKey subKey = OpenSubKey(rootKey, registryPath, fCreateIfNotExist);
return(subKey);
}
}
public void Dispose()
{
_hkey.Dispose();
}
public FileAssociationInfo(String fileExtension)
{
int retVal = 0;
uint lpType = 0;
if (!fileExtension.StartsWith("."))
{
fileExtension = "." + fileExtension;
}
ext = fileExtension;
IntPtr hExtension = IntPtr.Zero;
// Get the file extension value.
retVal = RegOpenKeyEx(new IntPtr(HKEY_CLASSES_ROOT), fileExtension, 0, KEY_QUERY_VALUE, out hExtension);
if (retVal != ERROR_SUCCESS)
{
throw new Win32Exception(retVal);
}
// Instantiate the first SafeRegistryHandle.
hExtHandle = new SafeRegistryHandle(hExtension, true);
string appId = new string(' ', MAX_PATH);
uint appIdLength = (uint)appId.Length;
retVal = RegQueryValueEx(hExtHandle.DangerousGetHandle(), String.Empty, 0, out lpType, appId, ref appIdLength);
if (retVal != ERROR_SUCCESS)
{
throw new Win32Exception(retVal);
}
// We no longer need the hExtension handle.
hExtHandle.Dispose();
// Determine the number of characters without the terminating null.
appId = appId.Substring(0, (int)appIdLength / 2 - 1) + @"\shell\open\Command";
// Open the application identifier key.
string exeName = new string(' ', MAX_PATH);
uint exeNameLength = (uint)exeName.Length;
IntPtr hAppId;
retVal = RegOpenKeyEx(new IntPtr(HKEY_CLASSES_ROOT), appId, 0, KEY_QUERY_VALUE | KEY_SET_VALUE,
out hAppId);
if (retVal != ERROR_SUCCESS)
{
throw new Win32Exception(retVal);
}
// Instantiate the second SafeRegistryHandle.
hAppIdHandle = new SafeRegistryHandle(hAppId, true);
// Get the executable name for this file type.
string exePath = new string(' ', MAX_PATH);
uint exePathLength = (uint)exePath.Length;
retVal = RegQueryValueEx(hAppIdHandle.DangerousGetHandle(), String.Empty, 0, out lpType, exePath, ref exePathLength);
if (retVal != ERROR_SUCCESS)
{
throw new Win32Exception(retVal);
}
// Determine the number of characters without the terminating null.
exePath = exePath.Substring(0, (int)exePathLength / 2 - 1);
// Remove any environment strings.
exePath = Environment.ExpandEnvironmentVariables(exePath);
int position = exePath.IndexOf('%');
if (position >= 0)
{
args = exePath.Substring(position);
// Remove command line parameters ('%0', etc.).
exePath = exePath.Substring(0, position).Trim();
}
openCmd = exePath;
}
void IDisposable.Dispose()
{
_hkey?.Dispose();
}
