TaskAutorun.cs

public class TaskAutorun
    {
        public string TaskName { get; set; }
        public string Description { get; set; }
        public string Author { get; set; }
        public string Version { get; set; }
        public string Path { get; set; }

        public TaskAutorun(string name)
        {
            TaskName = name;
            Version = "1.0.0.0";
        }

        public bool TryRegisterTask()
        {
            try
            {
                RegisterTask();
                return true;
            }
            catch
            {
                return false;
            }
        }

        public void RegisterTask()
        {
            try
            {
                DoRegisterTask();
            }
            catch (TargetInvocationException ex)
            {
                throw ex.InnerException;
            }
        }

        private void DoRegisterTask()
        {
            COMObject schedule = COMObject.Create("Schedule.Service");

            schedule.InvokeMember("Connect", System.Reflection.BindingFlags.InvokeMethod, null, null, null, null);

            COMObject taskDef = new COMObject(schedule.InvokeMember("NewTask", BindingFlags.InvokeMethod, 0));
            COMObject regInfo = new COMObject(taskDef.InvokeMember("RegistrationInfo", BindingFlags.GetProperty));

            regInfo.InvokeMember("Description", BindingFlags.SetProperty, this.Description);
            regInfo.InvokeMember("Author", BindingFlags.SetProperty, this.Author);
            regInfo.InvokeMember("Version", BindingFlags.SetProperty, this.Version);

            COMObject triggerCollection = new COMObject(taskDef.InvokeMember("Triggers", BindingFlags.GetProperty));
            COMObject trigger = new COMObject(triggerCollection.InvokeMember("Create", BindingFlags.InvokeMethod, 8/*TASK_TRIGGER_BOOT*/));

            trigger.InvokeMember("Enabled", BindingFlags.SetProperty, true);

            COMObject actionCollection = new COMObject(taskDef.InvokeMember("Actions", BindingFlags.GetProperty));
            COMObject action = new COMObject(actionCollection.InvokeMember("Create", BindingFlags.InvokeMethod, 0/*TASK_ACTION_EXEC*/));

            action.InvokeMember("Path", BindingFlags.SetProperty, this.Path);

            COMObject rootFolder = new COMObject(schedule.InvokeMember("GetFolder", BindingFlags.InvokeMethod, "\\"));
            COMObject registeredTask = new COMObject(rootFolder.InvokeMember("RegisterTaskDefinition", BindingFlags.InvokeMethod, this.TaskName, taskDef.Value, 0x6/*TASK_CREATE_OR_UPDATE*/, null, null, 3, ""));

        }
    }