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

/// <summary>
/// 读取注册表
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public static string GetRegistData(string name)
{
    string registData;
    RegistryKey hklm = Registry.LocalMachine;
    RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
    RegistryKey aimdir = software.OpenSubKey("XXX", true);
    registData = aimdir.GetValue(name).ToString();
    return registData;
}

/// <summary>
/// 写入注册表
/// </summary>
/// <param name="name"></param>
/// <param name="tovalue"></param>
public static void WriteRegedit(string name, string tovalue)
{
    RegistryKey hklm = Registry.LocalMachine;
    RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
    RegistryKey aimdir = software.CreateSubKey("XXX");
    aimdir.SetValue(name, tovalue);
}

/// <summary>
/// 删除注册表
/// </summary>
/// <param name="name"></param>
public static void DeleteRegist(string name)
{
    string[] aimnames;
    RegistryKey hklm = Registry.LocalMachine;
    RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
    RegistryKey aimdir = software.OpenSubKey("XXX", true);
    aimnames = aimdir.GetSubKeyNames();
    foreach (string aimKey in aimnames)
    {
        if (aimKey == name) aimdir.DeleteSubKeyTree(name);
    }
}

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；

/// <summary>
/// 读取注册表
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public static string GetRegistData(string name)
{
    string registData;
    RegistryView useRegistryView = Environment.Is64BitOperatingSystem ? RegistryView.Registry64 : RegistryView.Registry32;
    RegistryKey hklm = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, useRegistryView);
    RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
    RegistryKey aimdir = software.OpenSubKey("XXX", true);
    registData = aimdir.GetValue(name).ToString();
    return registData;
}

/// <summary>
/// 写入注册表
/// </summary>
/// <param name="name"></param>
/// <param name="tovalue"></param>
public static void WriteRegedit(string name, string tovalue)
{
    RegistryView useRegistryView = Environment.Is64BitOperatingSystem ? RegistryView.Registry64 : RegistryView.Registry32;
    RegistryKey hklm = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, useRegistryView);
    RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
    RegistryKey aimdir = software.CreateSubKey("XXX");
    aimdir.SetValue(name, tovalue);
}

/// <summary>
/// 删除注册表
/// </summary>
/// <param name="name"></param>
public static void DeleteRegist(string name)
{
    string[] aimnames;
    RegistryView useRegistryView = Environment.Is64BitOperatingSystem ? RegistryView.Registry64 : RegistryView.Registry32;
    RegistryKey hklm = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, useRegistryView);
    RegistryKey software = hklm.OpenSubKey("SOFTWARE", true);
    RegistryKey aimdir = software.OpenSubKey("XXX", true);
    aimnames = aimdir.GetSubKeyNames();
    foreach (string aimKey in aimnames)
    {
        if (aimKey == name) aimdir.DeleteSubKeyTree(name);
    }
}

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；