1 using System;
 2 
 3 namespace Backend
 4 {
 5     public class RegistryStorage
 6     {
 7         public static PageVisibility OpenAfterStart()
 8         {
 9             Microsoft.Win32.RegistryKey registryKey;
10             PageVisibility visibility = PageVisibility.Visible;
11 
12             // HKCU\Software\RegeditStorage
13             registryKey = Microsoft.Win32.Registry.CurrentUser.OpenSubKey(@"Software\RegistryStorage");
14             if (registryKey != null)
15             {
16                 visibility = (string)registryKey.GetValue("PageVisibility") == PageVisibility.Hide.ToString() ?
17                     PageVisibility.Hide : PageVisibility.Visible;
18                 registryKey.Close();
19             }
20 
21             return visibility;
22         }
23 
24         public static void SaveBeforeExit(PageVisibility visibility)
25         {
26             Microsoft.Win32.RegistryKey registryKey;
27 
28             // HKCU\Software\RegeditStorage
29             registryKey = Microsoft.Win32.Registry.CurrentUser.CreateSubKey(@"Software\RegistryStorage");
30             registryKey.SetValue("PageVisibility", visibility.ToString());
31             registryKey.Close();
32         }
33     }
34 
35     public enum PageVisibility
36     { 
37         Visible,
38         Hide
39     }
40 }

 1 using System;
 2 using System.Diagnostics;
 3 
 4 namespace Backend.Test
 5 {
 6     class Program
 7     {
 8         static void Main(string[] args)
 9         {
10             // 存值 
11             RegistryStorage.SaveBeforeExit(PageVisibility.Hide);
12             // 取值
13             PageVisibility visibility = RegistryStorage.OpenAfterStart();
14             // 验证
15             Debug.Assert(visibility == PageVisibility.Hide);
16 
17 
18             // 存值
19             RegistryStorage.SaveBeforeExit(PageVisibility.Visible);
20             // 取值
21             visibility = RegistryStorage.OpenAfterStart();
22             // 验证
23             Debug.Assert(visibility == PageVisibility.Visible);
24 
25             Console.WriteLine("Press any key to exit.");
26             Console.ReadKey();
27         }
28     }
29 }