软件添加注册功能

        软件添加注册功能: 给用户一个界面输入Key(注：此Key是我用别的工具加密生成), 直接写到用户电脑的注册表中。软件每次开启，都会对比注册表中的时间与当前时间，以此判断软件是否过期，

 

 代码如下：

 

/*写入注册表*/
public static void WriteSetting(string Section, string Key, string Setting) // name = key value=setting Section= path
{
string text1 = Section;
RegistryKey key1 = Registry.CurrentUser.CreateSubKey("Software\\efwplusServer\\cdkey"); // .LocalMachine.CreateSubKey("Software\\mytest");
if (key1 == null)
{
return;
}
try
{
key1.SetValue(Key, Setting);
}
catch (Exception exception1)
{
return;
}
finally
{
key1.Close();
}
}

 

 

/// <summary>
/// 读取注册表
/// </summary>
/// <param name="Section"></param>
/// <param name="Key"></param>
/// <param name="Default"></param>
/// <returns></returns>
public static string ReadSetting(string Section, string Key, string Default)
{
RegistryKey registryKey = Registry.CurrentUser.OpenSubKey("Software\\MyServer\\cdkey");
if (registryKey != null)
{
object objValue = registryKey.GetValue(Key, Default);

if (objValue != null)
{
Default = Encryption.DisEncryPW(objValue.ToString(), key2);
}
registryKey.Close();
} 
return Default;
}

public static string InitRegedit(out string expireDate)
        {
            string res = "";
            expireDate = "";
            /*检查注册表 BFEBFBFF000206A7-20190112*/
            string SericalNumber = ReadSetting("", "SerialNumber", "-1");   
            if (SericalNumber == "-1")
            {
                res = "软件尚未注册，请注册软件！";
            }
            /* 比较CPUid */ 
            string CpuId =SericalNumber.Split('-')[0];               
            string CpuIdThis = GetCpuId();                  
            if (CpuId != CpuIdThis)
            {
                res = "注册机器与本机不一致,请联系管理员！";
            }
            /* 比较时间 */
            string NowDate = DateTime.Now.ToString("yyyyMMdd");    
            string EndDate = SericalNumber.Split('-')[1];           
            if (Convert.ToInt32(EndDate) - Convert.ToInt32(NowDate) < 0)
            {
                res = "软件试用已到期！";
            }
            DateTime dt = DateTime.ParseExact(EndDate, "yyyyMMdd", System.Globalization.CultureInfo.CurrentCulture);
            expireDate = dt.ToString("yyyy年MM月dd日");
            return res;
        }

http://www.cnblogs.com/kakake/p/3938262.html
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