MyFirstPrevalentSystem.Task.SetDone C# (CSharp) Method

		internal void SetDone()
		{
			_done = true;
		}
	}

        public void MarkTaskAsDone(int taskID)
        {
            Task task = _tasks[taskID] as Task;

            if (null == task)
            {
                throw new ArgumentException("Task not found!", "taskID");
            }
            task.SetDone();
        }