private void checkBox8_CheckedChanged(object sender, EventArgs e)
{
   try
	{
		//设置开机自启动  
		if (checkBox8.Checked == true)
		{
			/*方法一*/
			string StartupPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.CommonStartup);
			//获得文件的当前路径
			string dir = Directory.GetCurrentDirectory();
			//获取可执行文件的全部路径
			string exeDir = dir + @"\自动备份.exe.lnk";
			File.Copy(exeDir, StartupPath + @"\自动备份.exe.lnk", true);
			/*方法二*/
			string path = Application.ExecutablePath;
			RegistryKey rk = Registry.LocalMachine;
			RegistryKey rk2 = rk.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Run");
			rk2.SetValue("JcShutdown", path);
			rk2.Close();
			rk.Close();
		}
		//取消开机自启动  
		else
		{
			/*方法一*/
			string StartupPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.CommonStartup);
			System.IO.File.Delete(StartupPath + @"\EcgNetPlug.exe.lnk");
			/*方法二*/
			string path = Application.ExecutablePath;
			RegistryKey rk = Registry.LocalMachine;
			RegistryKey rk2 = rk.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Run");
			rk2.DeleteValue("JcShutdown", false);
			rk2.Close();
			rk.Close();
		}
	}
	catch (Exception ex)
	{
		MessageBox.Show(ex.Message);
	}
}