WPF开发随笔收录-操作注册表

一、前言

在windows平台软件开发过程中，注册表的操作是经常会遇到的一个场景。今天记录一下在操作注册表时遇到的一些坑；
二、正文

1、操作注册表，于是直接从网上找了一段代码来用

1. /// <summary>
2. /// 读取注册表
3. /// </summary>
4. /// <param name="name"></param>
5. /// <returns></returns>
6. public static string GetRegistData(string name)
7. {
8.     string registData;
9.     RegistryKey hklm = Registry.LocalMachine;
10.     RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
11.     RegistryKey aimdir = software.OpenSubKey("XXX", true);
12.     registData = aimdir.GetValue(name).ToString();
13.     return registData;
14. }
16. /// <summary>
17. /// 写入注册表
18. /// </summary>
19. /// <param name="name"></param>
20. /// <param name="tovalue"></param>
21. public static void WriteRegedit(string name, string tovalue)
22. {
23.     RegistryKey hklm = Registry.LocalMachine;
24.     RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
25.     RegistryKey aimdir = software.CreateSubKey("XXX");
26.     aimdir.SetValue(name, tovalue);
27. }
29. /// <summary>
30. /// 删除注册表
31. /// </summary>
32. /// <param name="name"></param>
33. public static void DeleteRegist(string name)
34. {
35.     string[] aimnames;
36.     RegistryKey hklm = Registry.LocalMachine;
37.     RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
38.     RegistryKey aimdir = software.OpenSubKey("XXX", true);
39.     aimnames = aimdir.GetSubKeyNames();
40.     foreach (string aimKey in aimnames)
41.     {
42.         if (aimKey == name) aimdir.DeleteSubKeyTree(name);
43.     }
44. }

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2、但在使用过程中，发现通过这种方式写的注册表值虽然能读取出来，但是在电脑上打开注册表工具，却无法查看到对应自己写入的注册表值，翻阅资料后发现这样写有问题，还需要判断一下电脑是32位的还是64位的，需要做一下修改；参考下面修改后的代码，先查出电脑对应的位数，再去操作对应指定位数的注册表；

1. /// <summary>
2. /// 读取注册表
3. /// </summary>
4. /// <param name="name"></param>
5. /// <returns></returns>
6. public static string GetRegistData(string name)
7. {
8.     string registData;
9.     RegistryView useRegistryView = Environment.Is64BitOperatingSystem ? RegistryView.Registry64 : RegistryView.Registry32;
10.     RegistryKey hklm = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, useRegistryView);
11.     RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
12.     RegistryKey aimdir = software.OpenSubKey("XXX", true);
13.     registData = aimdir.GetValue(name).ToString();
14.     return registData;
15. }
17. /// <summary>
18. /// 写入注册表
19. /// </summary>
20. /// <param name="name"></param>
21. /// <param name="tovalue"></param>
22. public static void WriteRegedit(string name, string tovalue)
23. {
24.     RegistryView useRegistryView = Environment.Is64BitOperatingSystem ? RegistryView.Registry64 : RegistryView.Registry32;
25.     RegistryKey hklm = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, useRegistryView);
26.     RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
27.     RegistryKey aimdir = software.CreateSubKey("XXX");
28.     aimdir.SetValue(name, tovalue);
29. }
31. /// <summary>
32. /// 删除注册表
33. /// </summary>
34. /// <param name="name"></param>
35. public static void DeleteRegist(string name)
36. {
37.     string[] aimnames;
38.     RegistryView useRegistryView = Environment.Is64BitOperatingSystem ? RegistryView.Registry64 : RegistryView.Registry32;
39.     RegistryKey hklm = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, useRegistryView);
40.     RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
41.     RegistryKey aimdir = software.OpenSubKey("XXX", true);
42.     aimnames = aimdir.GetSubKeyNames();
43.     foreach (string aimKey in aimnames)
44.     {
45.         if (aimKey == name) aimdir.DeleteSubKeyTree(name);
46.     }
47. }

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3、由于注册表的操作涉及到管理员权限，所以上面的几个方法里最好加上try，防止程序出现异常奔溃；

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