VC word cloud on knee

Recently, I sharply wanted to find out how often the word "coffee" is found in the public of my friend, as well as to build a beautiful cloud of words, based on the frequency of their appearance in posts.
If you are interested in how to do it literally on your knees using C #, then please, under cat.

Getting data from VK

First, install the appropriate library . We create the VK application.

var services = new ServiceCollection();
var vkApi = new VkApi(services);

We will authorize, although this stage can be skipped, but then the number of available "walls" in VK will sharply decrease.

 vkApi.Authorize(new ApiAuthParams
                { AccessToken = "ваш токен",Settings = Settings.All});

or:

vkApi.Authorize(new ApiAuthParams
	{
		Login = "Login",
		Password = "Password",
		Settings = Settings.All
	});

We get the last 100 posts on the selected wall.

var posts=vkApi.Wall.Get(new WallGetParams
            {
                OwnerId = (long)IdНужнойСтены,// для сообществ id должно начинаться с -
                Count = 100
            });

From the existing collection we make one large line.

foreach (var post in posts.WallPosts)
            {
                if (!string.IsNullOrEmpty(post.Text))
                    data += post.Text;
            }

Further, you can clear the selected line from punctuation marks.

 data = Regex.Replace(data, "\\!|\\?|\\(|\\)|\"|\\#|\\,|»|«|-", string.Empty);

Well, let's get a collection of words.

 var words = data.Split(default(Char[]), StringSplitOptions.RemoveEmptyEntries).ToList();

At the penultimate stage, we compose a dictionary with the frequency of words.

var wordsDictionary = new Dictionary();
foreach (var word in words)
        {
            if (wordsDictionary.ContainsKey(word.ToLower()))
                wordsDictionary[word.ToLower()] += 1;
             else
            {
                wordsDictionary.Add(word.ToLower(),1);
            }
        }

At the end, we sort it and, if desired, save it to a file.

wordsDictionary = wordsDictionary.OrderByDescending(x => x.Value)
                                 .ToDictionary(x => x.Key, x => x.Value);

Moving on to creating a word cloud

To do this, you must add the dependency System.Drawing to the project and this package .

Add dependency to our application.

using WordCloudGen = WordCloud.WordCloud;

And we form the image.

            var wc = new WordCloudGen(1024, 1024);
            wc.Draw(wordsDictionary.Keys.ToList(),
                    wordsDictionary.Values.ToList())
              .Save("cloudwords.jpg");
            Console.WriteLine("pict create");

In conclusion, I want to say thank you to the user worldbeater and recall that the library for VK has great support in tg . By the way, the word "coffee" for 100 posts occurred 142 times.