C# 设置应用程序开机自动运行

/// <summary>
        /// 设置应用程序开机自动运行
        /// </summary>
        /// <param name="fileName">应用程序的文件名</param>
        /// <param name="isAutoRun">是否自动运行，为false时，取消自动运行</param>
        /// <exception cref="System.Exception">设置不成功时抛出异常</exception>
         public static void SetAutoRun(string fileName,bool isAutoRun)
        {
            RegistryKey reg=null;
            try
            {
                if (!System.IO.File.Exists(fileName))
                    throw new Exception("该文件不存在!");
                String name = fileName.Substring(fileName.LastIndexOf("\") + 1);
                reg = Registry.LocalMachine.OpenSubKey("SOFTWARE\Microsoft\Windows\CurrentVersion\Run", true);
                if (reg == null)
                    reg = Registry.LocalMachine.CreateSubKey("SOFTWARE\Microsoft\Windows\CurrentVersion\Run");
                if (isAutoRun)
                    reg.SetValue(name, fileName);
                else
                    reg.SetValue(name, false);
            }
            catch (Exception ex)
            {
                throw new Exception(ex.ToString());
            }
                finally
            {
                if(reg!=null)
                reg.Close();
            }        
        }

 ------------------------

 

RegistryKey hklm = Application.LocalMachine;
 RegistryKey run = hklm.CreateSubKey(@"SOFTWARE\Microsoft\Windows\Current\Version\Run");
 try
 {
    run.SetValue("tractor.exe","D:\\tractor.exe");
    MessageBox.Show("注册表添加成功!!","提示",MessageBoxButton.OK, MessageBoxIcon.Information);
    hklm.Close();
 }

 catch(Exception ee)
 {
    MessageBox.Show(my.Message.ToString(),"提示",MessageBoxButton.OK, MessageBoxIcon.Error);
  }