WPF開發隨筆收錄-操作註冊表

一、前言

在windows平臺軟體開發過程中，註冊表的操作是經常會遇到的一個場景。今天記錄一下在操作註冊表時遇到的一些坑；

二、正文

1、操作註冊表，於是直接從網上找了一段代碼來用

/// <summary>
/// 讀取註冊表
/// </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>
/// 寫入註冊表
/// </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>
/// 刪除註冊表
/// </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、但在使用過程中，發現通過這種方式寫的註冊表值雖然能讀取出來，但是在電腦上打開註冊表工具，卻無法查看到對應自己寫入的註冊表值，翻閱資料後發現這樣寫有問題，還需要判斷一下電腦是32位的還是64位的，需要做一下修改；參考下麵修改後的代碼，先查出電腦對應的位數，再去操作對應指定位數的註冊表；

/// <summary>
/// 讀取註冊表
/// </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>
/// 寫入註冊表
/// </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>
/// 刪除註冊表
/// </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、由於註冊表的操作涉及到管理員許可權，所以上面的幾個方法里最好加上try，防止程式出現異常奔潰；