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Imported Upstream version 5.0.0.42
Former-commit-id: fd56571888259555122d8a0f58c68838229cea2b
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Xamarin Public Jenkins (auto-signing)
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6bdd276d05
@ -33,7 +33,7 @@
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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#if !MOBILE
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#if WIN_PLATFORM
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using System;
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using System.Collections;
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@ -92,14 +92,17 @@ namespace Microsoft.Win32
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[DllImport ("advapi32.dll", CharSet=CharSet.Unicode, EntryPoint="RegDeleteValue")]
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private static extern int RegDeleteValue (IntPtr keyHandle, string valueName);
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[DllImport ("advapi32.dll", CharSet=CharSet.Unicode, EntryPoint="RegEnumKey")]
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private static extern int RegEnumKey (IntPtr keyBase, int index, StringBuilder nameBuffer, int bufferLength);
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[DllImport ("advapi32.dll", CharSet=CharSet.Unicode, EntryPoint="RegEnumKeyExW")]
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internal unsafe static extern int RegEnumKeyEx (IntPtr keyHandle, int dwIndex,
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char* lpName, ref int lpcbName, int[] lpReserved,
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[Out]StringBuilder lpClass, int[] lpcbClass,
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long[] lpftLastWriteTime);
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[DllImport ("advapi32.dll", CharSet=CharSet.Unicode, EntryPoint="RegEnumValue")]
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private static extern int RegEnumValue (IntPtr keyBase,
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int index, StringBuilder nameBuffer,
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ref int nameLength, IntPtr reserved,
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ref RegistryValueKind type, IntPtr data, IntPtr dataLength);
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internal unsafe static extern int RegEnumValue (IntPtr hKey, int dwIndex,
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char* lpValueName, ref int lpcbValueName,
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IntPtr lpReserved_MustBeZero, int[] lpType, byte[] lpData,
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int[] lpcbData);
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// [DllImport ("advapi32.dll", CharSet=CharSet.Unicode, EntryPoint="RegSetValueEx")]
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// private static extern int RegSetValueEx (IntPtr keyBase,
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@ -146,6 +149,14 @@ namespace Microsoft.Win32
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string valueName, IntPtr reserved, ref RegistryValueKind type,
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ref long data, ref int dataSize);
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[DllImport ("advapi32.dll", CharSet = CharSet.Unicode, EntryPoint="RegQueryInfoKeyW")]
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internal static extern int RegQueryInfoKey (IntPtr hKey, [Out]StringBuilder lpClass,
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int[] lpcbClass, IntPtr lpReserved_MustBeZero, ref int lpcSubKeys,
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int[] lpcbMaxSubKeyLen, int[] lpcbMaxClassLen,
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ref int lpcValues, int[] lpcbMaxValueNameLen,
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int[] lpcbMaxValueLen, int[] lpcbSecurityDescriptor,
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int[] lpftLastWriteTime);
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// Returns our handle from the RegistryKey
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public IntPtr GetHandle (RegistryKey key)
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{
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@ -355,59 +366,54 @@ namespace Microsoft.Win32
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return result;
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}
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// Arbitrary max size for key/values names that can be fetched.
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// .NET framework SDK docs say that the max name length that can
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// be used is 255 characters, we'll allow for a bit more.
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const int BufferMaxLength = 1024;
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// MSDN defines the following limits for registry key names & values:
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// Key Name: 255 characters
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// Value name: 16,383 Unicode characters
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// Value: either 1 MB or current available memory, depending on registry format.
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private const int MaxKeyLength = 255;
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private const int MaxValueLength = 16383;
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public int SubKeyCount (RegistryKey rkey)
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{
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int index;
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StringBuilder stringBuffer = new StringBuilder (BufferMaxLength);
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IntPtr handle = GetHandle (rkey);
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for (index = 0; true; index ++) {
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int result = RegEnumKey (handle, index, stringBuffer,
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stringBuffer.Capacity);
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int subkeys = 0;
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int junk = 0;
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int ret = RegQueryInfoKey (GetHandle (rkey),
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null,
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null,
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IntPtr.Zero,
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ref subkeys, // subkeys
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null,
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null,
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ref junk, // values
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null,
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null,
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null,
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null);
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if (result == Win32ResultCode.Success)
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continue;
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if (result == Win32ResultCode.NoMoreEntries)
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break;
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// something is wrong!!
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GenerateException (result);
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}
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return index;
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if (ret != Win32ResultCode.Success)
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GenerateException (ret);
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return subkeys;
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}
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public int ValueCount (RegistryKey rkey)
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{
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int index, result, bufferCapacity;
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RegistryValueKind type;
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StringBuilder buffer = new StringBuilder (BufferMaxLength);
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IntPtr handle = GetHandle (rkey);
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for (index = 0; true; index ++) {
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type = 0;
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bufferCapacity = buffer.Capacity;
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result = RegEnumValue (handle, index,
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buffer, ref bufferCapacity,
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IntPtr.Zero, ref type,
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IntPtr.Zero, IntPtr.Zero);
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if (result == Win32ResultCode.Success || result == Win32ResultCode.MoreData)
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continue;
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if (result == Win32ResultCode.NoMoreEntries)
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break;
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// something is wrong
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GenerateException (result);
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}
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return index;
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int values = 0;
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int junk = 0;
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int ret = RegQueryInfoKey (GetHandle (rkey),
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null,
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null,
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IntPtr.Zero,
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ref junk, // subkeys
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null,
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null,
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ref values, // values
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null,
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null,
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null,
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null);
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if (ret != Win32ResultCode.Success)
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GenerateException (ret);
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return values;
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}
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public RegistryKey OpenRemoteBaseKey (RegistryHive hKey, string machineName)
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@ -536,57 +542,70 @@ namespace Microsoft.Win32
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GenerateException (result);
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}
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public string [] GetSubKeyNames (RegistryKey rkey)
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public unsafe string [] GetSubKeyNames (RegistryKey rkey)
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{
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IntPtr handle = GetHandle (rkey);
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StringBuilder buffer = new StringBuilder (BufferMaxLength);
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var keys = new List<string> ();
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for (int index = 0; true; index ++) {
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int result = RegEnumKey (handle, index, buffer, buffer.Capacity);
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int subkeys = SubKeyCount (rkey);
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var names = new string [subkeys]; // Returns 0-length array if empty.
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if (result == Win32ResultCode.Success) {
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keys.Add (buffer.ToString ());
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buffer.Length = 0;
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continue;
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if (subkeys > 0) {
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var hkey = GetHandle (rkey);
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char[] name = new char [MaxKeyLength + 1];
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int namelen;
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fixed (char* namePtr = &name [0]) {
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for (int i = 0; i < subkeys; i++) {
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namelen = name.Length; // Don't remove this. The API's doesn't work if this is not properly initialised.
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int ret = RegEnumKeyEx (hkey,
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i,
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namePtr,
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ref namelen,
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null,
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null,
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null,
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null);
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if (ret != 0)
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GenerateException (ret);
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names [i] = new String (namePtr);
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}
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}
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if (result == Win32ResultCode.NoMoreEntries)
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break;
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// should not be here!
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GenerateException (result);
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}
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return keys.ToArray ();
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return names;
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}
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public string [] GetValueNames (RegistryKey rkey)
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public unsafe string [] GetValueNames (RegistryKey rkey)
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{
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IntPtr handle = GetHandle (rkey);
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var values = new List<string> ();
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for (int index = 0; true; index ++)
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{
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StringBuilder buffer = new StringBuilder (BufferMaxLength);
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int bufferCapacity = buffer.Capacity;
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RegistryValueKind type = 0;
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int result = RegEnumValue (handle, index, buffer, ref bufferCapacity,
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IntPtr.Zero, ref type, IntPtr.Zero, IntPtr.Zero);
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int values = ValueCount (rkey);
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String[] names = new String [values];
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if (result == Win32ResultCode.Success || result == Win32ResultCode.MoreData) {
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values.Add (buffer.ToString ());
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continue;
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if (values > 0) {
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IntPtr hkey = GetHandle (rkey);
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char[] name = new char [MaxValueLength + 1];
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int namelen;
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fixed (char* namePtr = &name [0]) {
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for (int i = 0; i < values; i++) {
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namelen = name.Length;
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int ret = RegEnumValue (hkey,
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i,
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namePtr,
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ref namelen,
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IntPtr.Zero,
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null,
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null,
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null);
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if (ret != Win32ResultCode.Success && ret != Win32Native.ERROR_MORE_DATA)
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GenerateException (ret);
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names [i] = new String (namePtr);
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}
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}
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if (result == Win32ResultCode.NoMoreEntries)
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break;
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GenerateException (result);
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}
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return values.ToArray ();
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return names;
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}
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private void CheckResult (int result)
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