winform记住密码和判断是否已经记住密码 

 1 /// <summary>
 2         /// 根据传入值记住密码
 3         /// </summary>
 4         /// <param name="remember">是否记录</param>
 5         /// <param name="userName">用户名</param>
 6         /// <param name="password">密码</param>
 7          private void Remember(bool remember, string userName, string password)
 8         {
 9             try
10             {
11                 RegistryKey key = Registry.LocalMachine.OpenSubKey("SOFTWARE", true);
12                 key = key.CreateSubKey("CheckManage", RegistryKeyPermissionCheck.Default);
13                 if (remember)
14                 {
15                     key.SetValue("username", userName);
16                     key.SetValue("password", password);
17                 }
18                 else
19                 {
20                     if (key.GetValue("username") != null) key.DeleteValue("username");
21                     if (key.GetValue("password") != null) key.DeleteValue("password");
22                 }
23             }
24             catch { }
25         }
26 
27 
28 /// <summary>
29         /// 判断是否被记住密码
30         /// </summary>
31         /// <returns></returns>
32         private bool HasRemember()
33         {
34             try
35             {
36                 RegistryKey key = Registry.LocalMachine.OpenSubKey("SOFTWARE\\CheckManage", true);
37                 object objU = key.GetValue("username");
38                 if (objU != null) { this.txtUserName.Text = objU.ToString(); }
39 
40                 object objP = key.GetValue("password");
41                 if (objP != null) this.txtPassword.Text = objP.ToString();
42                 return objU != null && objP != null;
43             }
44             catch { return false; }
45         }

 

posted @ 2010-09-02 10:49  Luoxiaojie  阅读(701)  评论(0)    收藏  举报