求解……一段托盘图标代码，路过都来看看
string startup = Application.ExecutablePath;
RegistryKey rKey = Registry.LocalMachine;
RegistryKey autoRun = rKey.CreateSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run");
autoRun.SetValue("BookServer", startup);
rKey.Close();

[解决办法]

C# code

   //设置要开机启动的文件路径            string startup = Application.ExecutablePath;            //建立注册表的键值            RegistryKey rKey = Registry.LocalMachine;            //创建注册表的键            RegistryKey autoRun = rKey.CreateSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run");            //设置键值，第一个参数是名称，第二个参数是路径            autoRun.SetValue("BookServer", startup);            rKey.Close();