https://www.c-sharpcorner.com/articles/Articles from C# Corner© 1999 - 2026 CSharp Inc. All contents are copyright of their authors.Build a 'Hamlet Expert' using RAG! This demo combines LLMs & vector DBs to answer questions about Shakespeare, enhancing education with AI. Get the code!https://www.c-sharpcorner.com/article/basic-rag-demo-with-llm-and-vector-database/https://www.c-sharpcorner.com/article/basic-rag-demo-with-llm-and-vector-database/Sun, 11 Jan 2026 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Build image search for e-commerce using Qdrant! This demo uses CLIP & ResNet50 for semantic & visual similarity, enabling a powerful hybrid approach.https://www.c-sharpcorner.com/article/simple-demo-of-vector-database-with-qdrant-image-search/https://www.c-sharpcorner.com/article/simple-demo-of-vector-database-with-qdrant-image-search/Wed, 07 Jan 2026 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Explore vector databases like Qdrant for semantic search. Learn how to use AI embeddings to match user intent with the right services, boosting website traffic.https://www.c-sharpcorner.com/article/simple-demo-of-vector-database-with-qdrant-semantic-search/https://www.c-sharpcorner.com/article/simple-demo-of-vector-database-with-qdrant-semantic-search/Mon, 29 Dec 2025 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)This article explains when to use abstract classes vs. interfaces in C# through two scenarios. The first scenario demonstrates how abstract classes help avoid code duplication, while the second shows https://www.c-sharpcorner.com/article/when-to-use-abstract-class-vs-interface-and-why/https://www.c-sharpcorner.com/article/when-to-use-abstract-class-vs-interface-and-why/Thu, 28 Nov 2024 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)This article aims to provide a guided tour of some advanced topics in C# generics, such as constraints, covariance and contravariance, and custom generic interfaces.https://www.c-sharpcorner.com/article/exploring-advanced-generics-in-c-sharp-a-practical-guide-with-examples/https://www.c-sharpcorner.com/article/exploring-advanced-generics-in-c-sharp-a-practical-guide-with-examples/Sun, 24 Nov 2024 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Basic concepts of Web API development in .NET Core. Explore the essentials of Web API development in .NET Core with this beginner-friendly guide. Learn step-by-step techniques to build, deploy, and ophttps://www.c-sharpcorner.com/article/web-api-development-in-net-core/https://www.c-sharpcorner.com/article/web-api-development-in-net-core/Fri, 22 Nov 2024 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)This content provides an overview and detailed implementation guide of utilizing the Polly library for connection retry in .NET applications. It demonstrates creating an Employee class and table, simuhttps://www.c-sharpcorner.com/article/resolving-database-reconnection-challenges-in-net-with-polly3/https://www.c-sharpcorner.com/article/resolving-database-reconnection-challenges-in-net-with-polly3/Tue, 13 Feb 2024 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Using ConcurrentQueue to solve timeout and maximum pool size error in .Net. By implementing a ConcurrentQueue and asynchronous processing, the strategy efficiently manages and bulk inserts data into thttps://www.c-sharpcorner.com/blogs/resolve-timeout-max-pool-size-issues-in-net-queuebased-methodshttps://www.c-sharpcorner.com/blogs/resolve-timeout-max-pool-size-issues-in-net-queuebased-methodsFri, 12 Jan 2024 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Faced with persistent SQL Server timeouts due to high CPU usage, I identified resource-intensive queries using a script to analyze the top 10 queries, optimizing and rewriting them for improved efficihttps://www.c-sharpcorner.com/blogs/how-to-check-your-most-resourceintensive-queries-in-sql-serverhttps://www.c-sharpcorner.com/blogs/how-to-check-your-most-resourceintensive-queries-in-sql-serverFri, 29 Dec 2023 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Create a dummy Jeopardy! Game With ChatGPT and .Net Core.https://www.c-sharpcorner.com/article/create-a-dummy-jeopardy-game-with-chatgpt2/https://www.c-sharpcorner.com/article/create-a-dummy-jeopardy-game-with-chatgpt2/Wed, 29 Nov 2023 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Use C# .net Web API to track the marketing email open rate by your customerhttps://www.c-sharpcorner.com/blogs/increase-email-marketing-roi-by-tracking-opens-effectively-with-c-sharphttps://www.c-sharpcorner.com/blogs/increase-email-marketing-roi-by-tracking-opens-effectively-with-c-sharpSat, 04 Nov 2023 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)In explaining Dependency Injection (DI) to a child, consider action figures equipped with interchangeable tools. Imagine adding new weapons without altering the figures, much like incorporating advanchttps://www.c-sharpcorner.com/article/how-to-explain-dependency-injection-to-a-6-year-old-kid/https://www.c-sharpcorner.com/article/how-to-explain-dependency-injection-to-a-6-year-old-kid/Sun, 15 Oct 2023 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Explaining the differences between eager and lazy singleton https://www.c-sharpcorner.com/article/singleton-design-pattern-eager-and-lazy-initialization-with-code-example/https://www.c-sharpcorner.com/article/singleton-design-pattern-eager-and-lazy-initialization-with-code-example/Sat, 07 Oct 2023 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Explaining Singleton Design Pattern with C# code examplehttps://www.c-sharpcorner.com/article/problem-solving-with-the-singleton-design-pattern-a-before-and-after-code-analy/https://www.c-sharpcorner.com/article/problem-solving-with-the-singleton-design-pattern-a-before-and-after-code-analy/Thu, 05 Oct 2023 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)This article is about how Order No can reveal the vital information of a company, and how programmer can help to protect ithttps://www.c-sharpcorner.com/article/why-ignoring-your-order-numbers-could-be-a-costly-oversight/https://www.c-sharpcorner.com/article/why-ignoring-your-order-numbers-could-be-a-costly-oversight/Mon, 02 Oct 2023 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Using Microsoft.Extensions.Configuration.UserSecrets to manage sensitive information in .Net developmenthttps://www.c-sharpcorner.com/blogs/secure-development-in-net-an-introduction-to-usersecrets2https://www.c-sharpcorner.com/blogs/secure-development-in-net-an-introduction-to-usersecrets2Thu, 06 Jul 2023 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)In this article, I will illustrate how to use the .NetCore Identity Framework, with a special focus on the UserManager and RoleManager classes, to execute page control. The web application involved ishttps://www.c-sharpcorner.com/article/harnessing-the-power-of-usermanager-and-rolemanager-for-robust-user-control-in/https://www.c-sharpcorner.com/article/harnessing-the-power-of-usermanager-and-rolemanager-for-robust-user-control-in/Sat, 01 Jul 2023 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)Why Interface is important and powerful in C# programming https://www.c-sharpcorner.com/article/c-sharp-interface-and-why-interface/https://www.c-sharpcorner.com/article/c-sharp-interface-and-why-interface/Sat, 14 May 2022 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)In this article, you will learn about C# code to explain Abstract Factory Design Pattern. https://www.c-sharpcorner.com/article/c-sharp-abstract-factory-design-pattern-with-code-example/https://www.c-sharpcorner.com/article/c-sharp-abstract-factory-design-pattern-with-code-example/Thu, 17 Feb 2022 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)using C# console to solve 12 Marbles riddle by showing the steps in Consolehttps://www.c-sharpcorner.com/blogs/12-marbles-riddle-solutions-steps-by-steps-with-c-sharphttps://www.c-sharpcorner.com/blogs/12-marbles-riddle-solutions-steps-by-steps-with-c-sharpTue, 12 Oct 2021 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)In this blog, you will learn about Battleship Game in C# Console using Linq.https://www.c-sharpcorner.com/blogs/battleship-game-in-c-sharp-console-part-1https://www.c-sharpcorner.com/blogs/battleship-game-in-c-sharp-console-part-1Sun, 26 Sep 2021 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)In this blog, you will learn how to retrieve Values From Dynamically Appended MVC Partial View via javascript.https://www.c-sharpcorner.com/blogs/retrieve-values-from-dynamically-appended-mvc-partial-viewhttps://www.c-sharpcorner.com/blogs/retrieve-values-from-dynamically-appended-mvc-partial-viewFri, 05 Mar 2021 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)In this blog you will learn how to dynamically append and delete view with MVC Partial View.https://www.c-sharpcorner.com/blogs/dynamically-append-view-with-mvc-partial-viewhttps://www.c-sharpcorner.com/blogs/dynamically-append-view-with-mvc-partial-viewMon, 01 Mar 2021 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)I’m develop a program that can automatically generate a winning strategy based on different situation (e.g. different starting flags, winning condition, flags that allowed to remove per turn), comparehttps://www.c-sharpcorner.com/article/for-previous-post-please-have-a-read-on21-flags-game-theory-puzzle-in-c-sharp-part/https://www.c-sharpcorner.com/article/for-previous-post-please-have-a-read-on21-flags-game-theory-puzzle-in-c-sharp-part/Mon, 04 Jan 2021 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)In this blog, you will learn how to solve the 21 Flags Puzzle with a C# delegate.https://www.c-sharpcorner.com/blogs/21-flags-game-theory-puzzle-with-c-sharp-delegate-part-2https://www.c-sharpcorner.com/blogs/21-flags-game-theory-puzzle-with-c-sharp-delegate-part-2Wed, 02 Sep 2020 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)In this blog, you will learn how to create an unbeaten flag removal program with C#.https://www.c-sharpcorner.com/blogs/22-flags-game-theory-puzzle-in-c-sharphttps://www.c-sharpcorner.com/blogs/22-flags-game-theory-puzzle-in-c-sharpSun, 23 Aug 2020 00:00:00 GMTnoreply@c-sharpcorner.com (Ng Cheehou)