//此方法把启动项加载到注册表中
//获得应用程序路径
string strAssName = Application.StartupPath + @"\" + Application.ProductName + @".exe";
//获得应用程序名
string ShortFileName = Application.ProductName;
RegistryKey rgkRun = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true);
if (rgkRun == null)
{
  rgkRun = Registry.LocalMachine.CreateSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run");
}
rgkRun.SetValue(ShortFileName, strAssName);
//此删除注册表中启动项
//获得应用程序名
string ShortFileName = Application.ProductName;
RegistryKey rgkRun = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true);
if (rgkRun == null)
{
  rgkRun = Registry.LocalMachine.CreateSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run");
}
rgkRun.DeleteValue(ShortFileName, false);