Tag: section

Design a class called Post. This class models a StackOverflow contribution. It should have properties
for title, description and the date / time of creation. We should be able to vote up or down
An entry. We should also be able to see the current vote value. Make a contribution in the main method.
Vote up and down a few times and then display the current vote value.

In this exercise, you will learn that a StackOverflow contribution should provide up-voting methods
and down-voting. You shouldn't be able to set the Vote property from the outside.
Otherwise, you can accidentally change the votes of a class to 0 or random
Number. And so we create errors in our programs. The class should always protect theirs
Provide and hide the implementation details.

Teaching Tip: The goal of this exercise is to help you understand that classes should do this
Encapsulation of data AND behavior around this data. Many developers (including those with years of experience
Experience) tend to create classes that are pure data containers and other classes that are
pure behavior (method) providers. This is not object-oriented programming. This is
Process programming. Such programs are very fragile. Making a change breaks many parts
of the code.

This is the information that was given to me for this exercise in my C # tutorial. The following is my work code. I am still trying to understand object-oriented programming. I think I've set the properties so that you can get the information Do not give the option to set the vote property from the outside by setting the property to private. I also tried to protect the voting status so that you cannot vote up or down one by one, but still allow your vote to be changed and the number of votes displayed along with the protection of the voting status.

However, if anyone can see how to improve this, show a better way or teach me something new, I would very much appreciate it.

using System;

namespace ExerciseTwo
{
    class Post
    {
        public string Title { get; set; }
        public string Description { get; set; }
        public DateTime TimeDateCreated { get; private set; }
        public int VoteCount { get; private set; }
        private bool HasVotedUp;
        private bool HasVotedDown;

        public Post(string title, string description)
        {
            Title = title;
            Description = description;
            TimeDateCreated = DateTime.UtcNow;
            VoteCount = 0;
        }

        public void VoteUp()
        {
            if (HasVotedUp)
            {
                throw new Exception("You have already up-voted.");
            }
            else
            {
                VoteCount++;
                HasVotedUp = true;
                HasVotedDown = false;
            }
        }

        public void VoteDown()
        {
            if (HasVotedDown)
            {
                throw new Exception("You have already down-voted.");
            }
            else
            {
                VoteCount--;
                HasVotedDown = true;
                HasVotedUp = false;
            }
        }
    }
}

Script to demo how it could work.

namespace ExerciseTwo
{
    class Program
    {
        static void Main()
        {
            Post post = new Post("Does my post work?", "Test to see if my post works.");
            System.Console.WriteLine($"Title: {post.Title}");
            System.Console.WriteLine($"Description: {post.Description}");
            System.Console.WriteLine($"Date Created: {post.TimeDateCreated}");
            System.Console.WriteLine($"Post Count: {post.VoteCount}");
            post.VoteDown();
            System.Console.WriteLine($"Post Count: {post.VoteCount}");
            post.VoteUp();
            System.Console.WriteLine($"Post Count: {post.VoteCount}");
        }
    }
}

Thank you for your help!