Member Avatar for gunbuster363

I want to learn C# .net because .net is so popular now.
and I would like to work on an interesting topic which interests me,
because the tutorial is so boring........

personally I am interested to web spider/crawling using python,
and the project got to be in console ( not a graphic based project ) because my notebook sucks in speed.

Any other suggestion for a beginner in C# is welcome!!
Should be a challenging one.


Thank you all of you in advance.

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  • Latest Post Latest Post by ezestseo

Dani AI

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A compact, console-first project that teaches core .NET skills while matching 's interest in crawling: build a modular C# web crawler and small search/index tool. It stays text-only (no GUI), runs on low-power hardware, and can be grown stepwise from a trivial fetcher to a feature-rich tool that practices networking, parsing, async I/O, storage, and simple IR (information retrieval).

A practical staged plan:

  1. Minimal fetcher: a single, reusable HttpClient instance that downloads one page and prints the title.
  2. Link extraction: parse anchors with a library such as HtmlAgilityPack or AngleSharp and normalize URLs.
  3. Frontier and visited set: store a queue and a persisted visited set (SQLite or simple file) to avoid memory blowups.
  4. Politeness layer: implement robots.txt checking, per-domain rate limiting, and a configurable User-Agent.
  5. Bounded concurrency: add a worker pool (SemaphoreSlim or TPL Dataflow) to control parallel requests.
  6. Simple index: save page text, compute term lists, and implement a basic inverted index for keyword search (TF counts first; TF-IDF later).
  7. Extras: content-hash deduplication (SHA256), metadata extraction, and a CLI config file (JSON).

Key implementation tips and a tiny pattern to copy:

using var client = new HttpClient();
client.DefaultRequestHeaders.UserAgent.ParseAdd("ConsoleCrawler/0.1 (+contact@example.com)");
var html = await client.GetStringAsync(url);

Keep a single HttpClient to prevent socket exhaustion. For low-power machines favor small concurrency limits, stream writes to disk, and persist state so the crawler can resume.

Troubleshooting and cautions: test on a small subset of sites; respect robots.txt and terms of service; sites may block aggressive crawls—add delays and backoff. Dynamic JS-heavy pages require a headless browser and much more CPU (avoid for a slow laptop). Collected corpora from the crawler can also serve higher-level projects (indexing or language models) and complement the other suggestions from and the basic C# learning pointers mentioned by .

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Member Avatar for AuburnMathTutor

Perhaps what you could invent is a software system to check documents for spelling and grammar. You could use a book of words to look up tokens and find near-hits, and you could use some basic grammar rules to try to parse simple grammatical errors. You could make it so people could integrate it with Office products and even with web browsers. That way when well-intentioned people, especially those who are using a language other than their native one, will be able to produce correct text. That would be pretty cool, and think of the market value.

More seriously, because I get tired of playing Forum Cop, have you implemented all the standard sorting and searching algorithms? Do that. Implement a text-based console game in C# like a card game, a maze game, an RPG adventure, etc. Use your imagination. Write some code that plays tic-tac-toe, plays boggle, etc. Basically any board game you can make a computer play. Do some genetic algorithm stuff.

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