C# 4.0应用程序需要访问注册表，也可以作为普通用户运行

using Microsoft.Win32;

class Program
{
    static void Main()
    {
        // 定义注册表项路径
        string registryPath = @"SOFTWARE\MyApplication";

        // 读取注册表项的值
        string value = (string)Registry.GetValue(
            Registry.CurrentUser.ToString() + "\\" + registryPath,
            "MyValueName",
            "DefaultValue");

        // 输出注册表项的值
        Console.WriteLine("Registry Value: " + value);

        // 写入注册表项的值
        Registry.SetValue(
            Registry.CurrentUser.ToString() + "\\" + registryPath,
            "MyValueName",
            "NewValue",
            RegistryValueKind.String);

        // 删除注册表项
        Registry.CurrentUser.DeleteSubKey(registryPath);
    }
}