如何实现上位机程序开机自动启动呢？

实现很简单，通过C#操作注册表来实现。

代码已经写好，直接复制过去，在主程序里调用一下即可。

        /// <summary>  
        /// 修改程序在注册表中的键值  
        /// </summary>  
        /// <param name="isAuto">true:开机启动,false:不开机自启</param> 
        private void AutoStart(bool isAuto = true)
        {
            if (isAuto == true)
            {
                RegistryKey R_local = Registry.CurrentUser;
                RegistryKey R_run = R_local.CreateSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run");                 R_run.SetValue("ProjectName", System.Windows.Forms.Application.ExecutablePath);
                R_run.Close();
                R_local.Close();
            }
            else             {
                RegistryKey R_local = Registry.CurrentUser;
                RegistryKey R_run = R_local.CreateSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run");
                R_run.DeleteValue("ProjectName", false);
                R_run.Close();
                R_local.Close();
            }
        }