Mono BLOG

Dependency Injection (DI) is a design pattern used to decouple dependencies between components (services). It achieves this by delegating the creation and management of dependencies to an external container, rather than having components create their dependent objects directly.

In .NET, this is primarily implemented using IServiceCollection and IServiceProvider, which are now integral parts of the runtime libraries, making them universally available across the .NET platform!

1 ServiceCollection

IServiceCollection is essentially a list of ServiceDescriptor objects. A `ServiceDescr...

Copying directories in C# isn’t straightforward since .NET lacks a built-in method for this task. This guide explores three practical approaches to achieve directory copying, each with its pros and cons.

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Method 1: Recursive Copy

This method recursively copies files and subdirectories. It’s intuitive and aligns with Microsoft’s recommended pattern but requires careful handling of nested folders.

static void CopyDirectory(string sourceFolderPath, string targetFolderPath)
{
    Directory.CreateDirectory(targetFolderPath);

    foreach (string filePath in Directory.GetFiles(so...

A comprehensive guide to leveraging appsettings.json for flexible configuration management in .NET Core applications.

Quick Start

1. Create appsettings.json

{
  "AppSettings": {
    "LogLevel": "Warning",
    "ConnectionStrings": {
      "Default": "Server=localhost;Database=mydb;"
    }
  }
}

2. Basic Configuration Loading

using Microsoft.Extensions.Configuration;

var config = new ConfigurationBuilder()
    .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
    .Build();

string logLevel = config["AppSettings:LogLevel"];
string conne...

The Task class in C# is a powerful tool for multithreaded programming, enabling asynchronous operations, parallel processing, and task cancellation. This guide demonstrates common patterns and best practices for leveraging Task effectively.

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1. Executing Asynchronous Operations

Use Task.Run to offload work to the thread pool and await to handle completion.

static async Task<int> LongRunningOperationAsync()
{
    await Task.Delay(1000);  // Simulates async work (e.g., I/O)
    return 1;
}

static async Task MyMethodAsync()
{
    int result = await Task.Run(() => Long...

Working with strings is a daily task for developers, but mastering efficient and error-free string operations in C# requires understanding key techniques and avoiding common mistakes. This guide explores best practices for optimizing string handling.

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1. Prefer char Over string for Single Characters

Strings are reference types (heap-allocated), while char is a value type (stack-allocated). Use char-based overloads for better performance:

string str = "Hello, World!";
bool startsWithH = str.StartsWith('H');  // Faster than StartsWith("H")
bool containsO = str.Contain...

Basic Information

BSON (Binary JSON) is a binary-encoded JSON format developed by MongoDB, primarily used for data storage and transmission in MongoDB databases. It extends the JSON format by adding support for additional data types such as dates, timestamps, and binary data.

MessagePack is an efficient binary serialization format designed to achieve the smallest possible size and fastest possible processing speed. It supports multiple programming languages and is commonly used for network communication and data storage.

Similarities

BSON and MessagePack share several similar...