1 using System;
 2  using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Text;
 5 using Microsoft.Win32;
 6 
 7 namespace OperateRegistrationTable
 8 {
 9     class Programe
10     {
11         static void Main(string[] args)
12         {
13             OperatingRegistryKey();
14         }
15 
16         public static void OperatingRegistryKey()
17         {
18             string keyValue = string.Empty;
19             try
20             {
21                 //向注册表中写信息
22                 using (RegistryKey key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\EricSun\MyTestKey", true))
23                 {
24                     if (key == null)
25                     {
26                         using (RegistryKey myKey = Registry.LocalMachine.CreateSubKey(@"SOFTWARE\EricSun\MyTestKey"))
27                         {
28                             myKey.SetValue("MyKeyName", "Hello EricSun." + DateTime.Now.ToString());
29                         }
30                     }
31                     else
32                     {
33                         key.SetValue("MyKeyName", "Hello EricSun." + DateTime.Now.ToString());
34                     }
35                 }
36 
37                 //读取注册表信息
38                 using (RegistryKey currentKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\EricSun\MyTestKey", false))
39                 {
40                     if (currentKey == null)
41                     {
42                         Console.WriteLine("Hello EricSun, The Key you tried to open doesn't exist.");
43                     }
44                     else
45                     {
46                         keyValue = currentKey.GetValue("MyKeyName").ToString();
47                         Console.WriteLine("The Key Value is: {0}", keyValue);
48                     }
49                 }
50             }
51             catch (Exception ex)
52             { }
53         }
54     }
55 }
56