.NET使用advapi32.dll的API实现注册表的增、删、改、查功能
1..NET使用P/Invoke来实现注册表的增、删、改、查功能05-14
注册表可以用来进行存储一些程序的信息，例如用户的权限、或者某些值等，可以根据个人需要进行存储和删减。
当前注册表主目录：
引用包 Wesky.Net.OpenTools 1.0.5或者以上版本
操作演示：
创建注册表项
设置注册表值
读取注册表值
删除注册表值
删除注册表项
操作演示代码
IRegistryManager registryManager = new RegistryManager();
// 创建注册表项
// registryManager.CreateKey(RegistryRoot.CurrentUser, @"Wesky\MyApp");
// 设置注册表值
// registryManager.SetValue(RegistryRoot.CurrentUser, @"Wesky\MyApp", "MyValue", "Hello, Registry!");
// 读取注册表值
// var value = registryManager.GetValue(RegistryRoot.CurrentUser, @"Wesky\MyApp", "MyValue");
// Console.WriteLine($"读取到的注册表值:{value}");
// 删除注册表值
// registryManager.DeleteValue(RegistryRoot.CurrentUser, @"Wesky\MyApp", "MyValue");
// 删除注册表项
registryManager.DeleteKey(RegistryRoot.CurrentUser, @"Wesky\MyApp");
Console.WriteLine("Over");
Console.ReadKey();
核心包内源码：
[DllImport("advapi32.dll", CharSet = CharSet.Auto)]
private static extern int RegCreateKeyEx(
IntPtr hKey,
string lpSubKey,
int Reserved,
string lpClass,
int dwOptions,
int samDesired,
IntPtr lpSecurityAttributes,
out IntPtr phkResult,
out int lpdwDisposition);
[DllImport("advapi32.dll", CharSet = CharSet.Auto)]
private static extern int RegOpenKeyEx(
IntPtr hKey,
string lpSubKey,
int ulOptions,
int samDesired,
out IntPtr phkResult);
[DllImport("advapi32.dll", CharSet = CharSet.Auto)]
private static extern int RegCloseKey(IntPtr hKey);
[DllImport("advapi32.dll", CharSet = CharSet.Auto)]
private static extern int RegSetValueEx(
IntPtr hKey,
string lpValueName,
int Reserved,
int dwType,
byte[] lpData,
int cbData);
[DllImport("advapi32.dll", CharSet = CharSet.Auto)]
private static extern int RegGetValue(
IntPtr hKey,
string lpSubKey,
string lpValue,
int dwFlags,
out int pdwType,
StringBuilder pvData,
ref int pcbData);
[DllImport("advapi32.dll", CharSet = CharSet.Auto)]
private static extern int RegDeleteKey(IntPtr hKey, string lpSubKey);
[DllImport("advapi32.dll", CharSet = CharSet.Auto)]
private static extern int RegDeleteValue(IntPtr hKey, string lpValueName);
/// <summary>
/// 获取注册表根键
/// Get registry root key
/// </summary>
/// <param name="root"></param>
/// <returns></returns>
/// <exception cref="ArgumentOutOfRangeException"></exception>
private IntPtr GetRegistryRootKey(RegistryRoot root)
{
switch (root)
{
case RegistryRoot.ClassesRoot:
return HKEY_CLASSES_ROOT;
case RegistryRoot.CurrentUser:
return HKEY_CURRENT_USER;
case RegistryRoot.LocalMachine:
return HKEY_LOCAL_MACHINE;
case RegistryRoot.Users:
return HKEY_USERS;
case RegistryRoot.CurrentConfig:
return HKEY_CURRENT_CONFIG;
default:
throw new ArgumentOutOfRangeException(nameof(root), root, null);
}
}
/// <summary>
/// 创建注册表键
/// Create registry key
/// </summary>
/// <param name="root"></param>
/// <param name="subKey"></param>
/// <exception cref="Exception"></exception>
public void CreateKey(RegistryRoot root, string subKey)
{
IntPtr hKey = GetRegistryRootKey(root);
int result = RegCreateKeyEx(hKey, subKey, 0, null, REG_OPTION_NON_VOLATILE, KEY_WRITE, IntPtr.Zero, out IntPtr phkResult, out _);
if (result != ERROR_SUCCESS)
{
throw new Exception("创建注册表key失败。 Failed to create registry key.");
}
RegCloseKey(phkResult);
}
/// <summary>
/// 删除注册表键
/// Delete registry key
/// </summary>
/// <param name="root"></param>
/// <param name="subKey"></param>
/// <exception cref="Exception"></exception>
public void DeleteKey(RegistryRoot root, string subKey)
{
IntPtr hKey = GetRegistryRootKey(root);
int result = RegDeleteKey(hKey, subKey);
if (result != ERROR_SUCCESS)
{
throw new Exception("删除注册表key失败。Failed to delete registry key.");
}
}
/// <summary>
/// 设置注册表值
/// Set registry value
/// </summary>
/// <param name="root"></param>
/// <param name="subKey"></param>
/// <param name="valueName"></param>
/// <param name="value"></param>
/// <exception cref="Exception"></exception>
public void SetValue(RegistryRoot root, string subKey, string valueName, string value)
{
IntPtr hKey = GetRegistryRootKey(root);
int result = RegOpenKeyEx(hKey, subKey, 0, KEY_WRITE, out IntPtr phkResult);
if (result != ERROR_SUCCESS)
{
throw new Exception("打开注册表key失败。Failed to open registry key.");
}
byte[] data = Encoding.Unicode.GetBytes(value);
result = RegSetValueEx(phkResult, valueName, 0, REG_SZ, data, data.Length);
if (result != ERROR_SUCCESS)
{
throw new Exception("设置注册表值失败。Failed to set registry value.");
}
RegCloseKey(phkResult);
}
/// <summary>
/// 获取注册表值
/// Get registry value
/// </summary>
/// <param name="root"></param>
/// <param name="subKey"></param>
/// <param name="valueName"></param>
/// <returns></returns>
/// <exception cref="Exception"></exception>
public string GetValue(RegistryRoot root, string subKey, string valueName)
{
IntPtr hKey = GetRegistryRootKey(root);
int result = RegOpenKeyEx(hKey, subKey, 0, KEY_READ, out IntPtr phkResult);
if (result != ERROR_SUCCESS)
{
throw new Exception("打开注册表key失败。Failed to open registry key.");
}
int type = 0;
int size = 1024;
StringBuilder data = new StringBuilder(size);
result = RegGetValue(phkResult, null, valueName, RRF_RT_REG_SZ, out type, data, ref size);
if (result != ERROR_SUCCESS)
{
throw new Exception("获取注册表的值失败。Failed to get registry value.");
}
RegCloseKey(phkResult);
return data.ToString();
}
/// <summary>
/// 删除注册表值
/// Delete registry value
/// </summary>
/// <param name="root"></param>
/// <param name="subKey"></param>
/// <param name="valueName"></param>
/// <exception cref="Exception"></exception>
public void DeleteValue(RegistryRoot root, string subKey, string valueName)
{
IntPtr hKey = GetRegistryRootKey(root);
int result = RegOpenKeyEx(hKey, subKey, 0, KEY_WRITE, out IntPtr phkResult);
if (result != ERROR_SUCCESS)
{
throw new Exception("打开注册表key失败。Failed to open registry key.");
}
result = RegDeleteValue(phkResult, valueName);
if (result != ERROR_SUCCESS)
{
throw new Exception("删除注册表的值失败。Failed to delete registry value.");
}
RegCloseKey(phkResult);
}
2024-05-15 13:56:10【出处】：https://www.cnblogs.com/weskynet/p/18191869
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.NET使用P/Invoke来实现注册表的增、删、改、查功能
在.NET中，你可以使用P/Invoke来调用Windows API来实现对注册表的增、删、改、查操作。以下是一些基本的示例代码：
using System; using System.Runtime.InteropServices; using Microsoft.Win32; class RegistryOperations { // 注册表项基本路径 private const string baseRegistryPath = @"Software\YourSoftware"; // P/Invoke 调用 Windows API 来创建或打开注册表项 [DllImport("advapi32.dll")] static extern int RegCreateKeyEx( uint hKey, string subKey, int reserved, string lpClass, int dwOptions, int samDesired, int lpSecurityAttributes, out int phkResult, out int lpdwDisposition ); // P/Invoke 调用 Windows API 来关闭注册表项句柄 [DllImport("advapi32.dll", SetLastError = true)] static extern int RegCloseKey(int hKey); // P/Invoke 调用 Windows API 来设置注册表项值 [DllImport("advapi32.dll", CharSet = CharSet.Auto)] static extern int RegSetValueEx( int hKey, string lpValueName, int Reserved, int dwType, string lpData, int cbData ); // P/Invoke 调用 Windows API 来获取注册表项值 [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern int RegQueryValueEx( int hKey, string lpValueName, int lpReserved, out int lpType, System.Text.StringBuilder lpData, ref int lpcbData ); // P/Invoke 调用 Windows API 来删除注册表项值 [DllImport("advapi32.dll", CharSet = CharSet.Auto, SetLastError = true)] static extern int RegDeleteValue(int hKey, string lpValueName); // 创建或打开注册表项 public static int CreateOrOpenRegistryKey(string subKey) { int hkey, disposition; string keyPath = baseRegistryPath + "\\" + subKey; int result = RegCreateKeyEx(0x80000001, keyPath, 0, null, 0, 0xF003F, 0, out hkey, out disposition); return hkey; } // 关闭注册表项句柄 public static int CloseRegistryKey(int hKey) { return RegCloseKey(hKey); } // 设置注册表项值 public static int SetRegistryValue(int hKey, string valueName, string value) { return RegSetValueEx(hKey, valueName, 0, 1, value, value.Length); } // 获取注册表项值 public static string GetRegistryValue(int hKey, string valueName) { int type; int size = 1024; System.Text.StringBuilder data = new System.Text.StringBuilder(size); RegQueryValueEx(hKey, valueName, 0, out type, data, ref size); return data.ToString(); } // 删除注册表项值 public static int DeleteRegistryValue(int hKey, string valueName) { return RegDeleteValue(hKey, valueName); } }
在使用这些方法时，你需要先打开注册表项的句柄，然后进行相应的操作，操作完成后不要忘记关闭句柄。
请注意，直接操作注册表可能会影响系统稳定性和安全性，应谨慎使用。此外，这些代码示
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本文来自博客园，作者：jack_Meng，转载请注明原文链接：https://www.cnblogs.com/mq0036/p/18193726
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