/// <summary>
/// An internal version which does no security checks or argument checking. Skipping the
/// security checks should give us a slight perf gain on large trees.
/// </summary>
private void DeleteSubKeyTreeInternal(string subkey)
{
RegistryKey key = InternalOpenSubKey(subkey, true);
if (key != null)
{
using (key)
{
if (key.InternalSubKeyCount() > 0)
{
string[] keys = key.InternalGetSubKeyNames();
for (int i = 0; i < keys.Length; i++)
{
key.DeleteSubKeyTreeInternal(keys[i]);
}
}
}
DeleteSubKeyTreeCore(subkey);
}
else
{
ThrowHelper.ThrowArgumentException(SR.Arg_RegSubKeyAbsent);
}
}
public void DeleteSubKeyTree(string subkey, bool throwOnMissingSubKey)
{
ValidateKeyName(subkey);
// Security concern: Deleting a hive's "" subkey would delete all
// of that hive's contents. Don't allow "".
if (subkey.Length == 0 && IsSystemKey())
{
ThrowHelper.ThrowArgumentException(SR.Arg_RegKeyDelHive);
}
EnsureWriteable();
subkey = FixupName(subkey); // Fixup multiple slashes to a single slash
CheckPermission(RegistryInternalCheck.CheckSubTreeWritePermission, subkey, false, RegistryKeyPermissionCheck.Default);
RegistryKey key = InternalOpenSubKeyWithoutSecurityChecks(subkey, true);
if (key != null)
{
using (key)
{
if (key.InternalSubKeyCount() > 0)
{
string[] keys = key.InternalGetSubKeyNames();
for (int i = 0; i < keys.Length; i++)
{
key.DeleteSubKeyTreeInternal(keys[i]);
}
}
}
DeleteSubKeyTreeCore(subkey);
}
else if (throwOnMissingSubKey)
{
ThrowHelper.ThrowArgumentException(SR.Arg_RegSubKeyAbsent);
}
}
