C# tutorials

In multi-threaded applications, accessing and modifying collections concurrently can lead to data corruption and unpredictable behavior. .NET provides thread-safe collection classes within the...

This tutorial demonstrates how to write complex queries against a database using LINQ to Entities with Entity Framework Core. We'll cover various scenarios, including filtering, sorting, grouping,...

This tutorial explains partial classes and methods in C#, which allow splitting the definition of a class or method across multiple files. This is useful for code generation, separating concerns, and...

This tutorial explains how to implement logging in ASP.NET Core applications. ASP.NET Core provides a flexible and extensible logging system that allows you to record information about your...

Understanding LINQ's Element Retrieval Methods LINQ (Language Integrated Query) offers several methods for retrieving elements from a sequence. These methods, such as `FirstOrDefault()`,...

This tutorial explores performance optimization techniques in Entity Framework Core (EF Core), focusing on no-tracking queries, compiled queries, and indexing. By implementing these strategies, you...

Understanding the Differences: Dictionary vs. Hashtable in C# In C#, both `Dictionary` and `Hashtable` are used for storing key-value pairs. However, there are significant differences that impact...

This tutorial demonstrates how to write unit tests in C# using three popular testing frameworks: xUnit.net, NUnit, and MSTest. It covers the fundamental concepts, attributes, and methods required to...

In .NET, exceptions are organized in a hierarchical structure rooted in the System.Exception class. Understanding this hierarchy is crucial for effective exception handling, allowing you to catch...

Entity Framework Core (EF Core) is an ORM (Object-Relational Mapper) that simplifies database interactions in .NET applications. DbContext and DbSet are fundamental components of EF Core. DbContext...

stackalloc allows allocating memory on the stack rather than the heap. It's generally used for small, temporary buffers to avoid garbage collection overhead. Nested contexts, such as within loops or...

Using declarations, introduced in C# 8.0, provide a more concise way to ensure that disposable resources are properly released. They simplify resource management by automatically disposing of objects...

Understanding Pattern Matching in C# Pattern matching is a feature introduced in C# 7.0 and enhanced in later versions, allowing you to conditionally extract values from objects based on their...

Exception.InnerException in C# is a property that allows you to chain exceptions, providing a way to encapsulate the original exception that caused the current exception. This is particularly useful...

Throw expressions, introduced in C# 7.0, provide a more concise and expressive way to throw exceptions within expressions. This feature allows you to throw exceptions in places where a statement is...

Debugging multithreaded applications can be challenging due to their inherent complexity. The Threads window in Visual Studio provides a powerful tool for inspecting and managing threads within your...

The throw keyword in C# is used to signal that an error or exceptional condition has occurred. When used by itself (throw;) within a catch block, it re-throws the exception that was just caught. This...

C# 9.0 introduced record types, a new reference type that provides concise syntax for creating immutable data models. Records offer value-based equality, meaning two records are considered equal if...

Understanding Pattern Matching with Span and ReadOnlySpan in C# C# offers powerful pattern matching capabilities. Applying these to Span and ReadOnlySpan allows for efficient...

In C#, when working with files, you need to specify the access mode. This mode determines how you interact with the file, whether you read from it, write to it, or both. Choosing the correct file...

Routing is a crucial aspect of ASP.NET Core applications, responsible for mapping incoming requests to the appropriate controller actions. ASP.NET Core offers two primary approaches to defining...

Understanding Async and Await in C# The async and await keywords are fundamental to asynchronous programming in C#. They provide a cleaner, more readable way to write asynchronous code compared to...

Entity Framework Core (EF Core) is an ORM (Object-Relational Mapper) that simplifies database interactions in .NET applications. A core aspect of EF Core is tracking changes made to entities and...

Understanding the difference between value types and reference types is crucial for efficient memory management and predictable behavior in C#. Value types store their data directly within their...

Database seeding is the process of populating a database with initial data. This is often useful for creating a development environment with sample data, setting up default configurations, or...

Recursive patterns in C# 8.0 are a powerful feature that extends pattern matching capabilities by allowing you to match properties of nested objects and deconstruct objects in a recursive manner. They...

Razor Components, now formally known as Blazor components, are reusable UI building blocks in ASP.NET Core. They allow you to create interactive and dynamic web UIs using C# instead of JavaScript....

Understanding and Using the Path Class in C# The Path class in C# provides static methods for manipulating file paths in a cross-platform way. It's part of the System.IO namespace and offers...

C# 10 introduced file-scoped namespaces as a cleaner and more concise way to declare namespaces. This feature reduces boilerplate code, making files more readable and maintainable. Instead of wrapping...

This tutorial explores how to use the FileInfo and DirectoryInfo classes in C# to retrieve information about files and directories. These classes provide a robust way to interact with the file system,...