C#实现在注册表中保存信息

最近做的项目需要在注册表中记录一些用户设置，方便在程序下次启动时读取设置，应用上次用户保存的设置，挺简单的。

写出来，方便记忆，以后要用，可以直接改改就能用。

using System;

namespace Backend
{
    public class RegistryStorage
    {
        public static PageVisibility OpenAfterStart()
        {
            Microsoft.Win32.RegistryKey registryKey;
            PageVisibility visibility = PageVisibility.Visible;

            // HKCU\Software\RegeditStorage
            registryKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey(@"Software\RegistryStorage");
            if (registryKey != null)
            {
                visibility = (string)registryKey.GetValue("PageVisibility") == PageVisibility.Hide.ToString() ?
                    PageVisibility.Hide : PageVisibility.Visible;
                registryKey.Close();
            }

            return visibility;
        }

        public static void SaveBeforeExit(PageVisibility visibility)
        {
            Microsoft.Win32.RegistryKey registryKey;

            // HKCU\Software\RegeditStorage
            registryKey = Microsoft.Win32.Registry.CurrentUser.CreateSubKey(@"Software\RegistryStorage");
            registryKey.SetValue("PageVisibility", visibility.ToString());
            registryKey.Close();
        }
    }

    public enum PageVisibility
    { 
        Visible,
        Hide
    }
}

代码很容易理解，下面添加一点代码来测试一下。

using System;
using System.Diagnostics;

namespace Backend.Test
{
    class Program
    {
        static void Main(string[] args)
        {
            // 存值 
            RegistryStorage.SaveBeforeExit(PageVisibility.Hide);
            // 取值
            PageVisibility visibility = RegistryStorage.OpenAfterStart();
            // 验证
            Debug.Assert(visibility == PageVisibility.Hide);


            // 存值
            RegistryStorage.SaveBeforeExit(PageVisibility.Visible);
            // 取值
            visibility = RegistryStorage.OpenAfterStart();
            // 验证
            Debug.Assert(visibility == PageVisibility.Visible);

            Console.WriteLine("Press any key to exit.");
            Console.ReadKey();
        }
    }
}

最后，上一张修改后的注册表截图：