mcs/class/corlib/Microsoft.Win32/Registry.cs

   1 //
   2 // Microsoft.Win32.Registry.cs
   3 //
   4 // Author:
   5 //   Miguel de Icaza (miguel@novell.com)
   6 //   stubbed out by Alexandre Pigolkine (pigolkine@gmx.de)
   7 //
   8
   9 //
  10 // Copyright (C) 2004, 2005 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33
  34 namespace Microsoft.Win32
  35 {
  36         public
  37 #if NET_2_0
  38         static
  39 #else
  40         sealed
  41 #endif
  42         class Registry
  43         {
  44 #if !NET_2_0
  45                 private Registry () { }
  46 #endif
  47                 public static readonly RegistryKey ClassesRoot = new RegistryKey (
  48                                 RegistryHive.ClassesRoot, "HKEY_CLASSES_ROOT");
  49                 public static readonly RegistryKey CurrentConfig = new RegistryKey (
  50                                 RegistryHive.CurrentConfig, "HKEY_CURRENT_CONFIG");
  51                 public static readonly RegistryKey CurrentUser = new RegistryKey (
  52                                 RegistryHive.CurrentUser, "HKEY_CURRENT_USER");
  53                 public static readonly RegistryKey DynData = new RegistryKey (
  54                                 RegistryHive.DynData, "HKEY_DYN_DATA");
  55                 public static readonly RegistryKey LocalMachine = new RegistryKey (
  56                                 RegistryHive.LocalMachine, "HKEY_LOCAL_MACHINE");
  57                 public static readonly RegistryKey PerformanceData = new RegistryKey (
  58                                 RegistryHive.PerformanceData, "HKEY_PERFORMANCE_DATA");
  59                 public static readonly RegistryKey Users = new RegistryKey (
  60                                 RegistryHive.Users, "HKEY_USERS");
  61
  62 #if NET_2_0
  63                 static RegistryKey ToKey (string keyName, bool setting)
  64                 {
  65                         if (keyName == null)
  66                                 throw new ArgumentException ("Not a valid registry key name", "keyName");
  67
  68                         RegistryKey key = null;
  69                         string [] keys = keyName.Split ('\\');
  70
  71                         switch (keys [0]){
  72                         case "HKEY_CLASSES_ROOT":
  73                                 key = ClassesRoot;
  74                                 break;
  75                         case "HKEY_CURRENT_CONFIG":
  76                                 key = CurrentConfig;
  77                                 break;
  78                         case "HKEY_CURRENT_USER":
  79                                 key = CurrentUser;
  80                                 break;
  81                         case "HKEY_DYN_DATA":
  82                                 key = DynData;
  83                                 break;
  84                         case "HKEY_LOCAL_MACHINE":
  85                                 key = LocalMachine;
  86                                 break;
  87                         case "HKEY_PERFORMANCE_DATA":
  88                                 key = PerformanceData;
  89                                 break;
  90                         case "HKEY_USERS":
  91                                 key = Users;
  92                                 break;
  93                         default:
  94                                 throw new ArgumentException ("Keyname does not start with a valid registry root", "keyName");
  95                         }
  96
  97                         for (int i = 1; i < keys.Length; i++){
  98                                 RegistryKey nkey = key.OpenSubKey (keys [i], true);
  99                                 if (nkey == null){
 100                                         if (!setting)
 101                                                 return null;
 102                                         nkey = key.CreateSubKey (keys [i]);
 103                                 }
 104                                 key = nkey;
 105                         }
 106                         return key;
 107                 }
 108
 109                 public static void SetValue (string keyName, string valueName, object value)
 110                 {
 111                         RegistryKey key = ToKey (keyName, true);
 112                         if (valueName.Length > 255)
 113                                 throw new ArgumentException ("valueName is larger than 255 characters", "valueName");
 114
 115                         if (key == null)
 116                                 throw new ArgumentException ("cant locate that keyName", "keyName");
 117
 118                         key.SetValue (valueName, value);
 119                 }
 120
 121                 public static object GetValue (string keyName, string valueName, object defaultValue)
 122                 {
 123                         RegistryKey key = ToKey (keyName, false);
 124                         if (key == null)
 125                                 return defaultValue;
 126
 127                         return key.GetValue (valueName, defaultValue);
 128                 }
 129 #endif
 130         }
 131 }