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Learn C# LINQ with 5 practical examples you'll use every day. Master Where, Select, GroupBy, OrderBy, and aggregation with runnable code. Start coding now! C# LINQ (Language Integrated Query) is one of the most powerful features in the .NET ecosystem, and learning it well will instantly make you a more productive developer. If you've ever written nested for loops just to filter a list, group some records, or calculate a total, this C# LINQ tutorial will change how you write code forever. In this guide, you'll learn LINQ through 5 practical examples a developer would actually use every single day, complete with runnable code and an explanation of why each approach works. LINQ lets you query collections, databases, XML, and more using a clean, readable, SQL-like syntax directly in C#. Instead of describing how to loop through data step by step, you describe what you want, and the compiler handles the rest. Let's dive into the most useful LINQ examples you'...

Learn .NET microservices architecture, communication patterns, and best practices with practical C# examples. Build scalable services today—start now! Building scalable, resilient applications is the holy grail of modern backend development, and .NET microservices have become the go-to approach for teams that need to ship fast and scale independently. If you've been writing monolithic ASP.NET Core apps and wondering how companies like Netflix, Amazon, and Uber handle millions of requests, this guide is for you. We'll cover .NET microservices architecture, communication patterns, and battle-tested best practices—with runnable C# code you can drop into your own projects. By the end of this tutorial, you'll understand not just how to build microservices in .NET, but why each architectural decision matters. Whether you're a beginner searching for "how to build microservices in .NET" or a senior engineer evaluating advanced communication patterns, you...

How to build basic CRUD app with ReactJS Here's an example of building a simple CRUD application for managing a list of books. Step 1: Set up the React application To set up the React application, you'll need to have Node.js and NPM installed on your computer. Open a terminal or command prompt and create a new directory for your project. mkdir react-crud-app cd react-crud-app Next, initialize a new React application using the create-react-app CLI. npx create -react-app . Step 2: Create a list of books In this step, you'll create a list of books and display them in a table. Create a new file BookList.js in the src directory and add the following code: import React from 'react' ; const BookList = ( { books } ) => { return ( < table > < thead > < tr > < th > Title </ th > < th > Author </ th > < th > Actions </ th > </ tr > ...

How to create a form in Angular 14 with validation First, in your component HTML file, you can create a form using the form and input tags. In this example, we will create a simple login form with two inputs: email and password. We will also add some validation rules to ensure that the user enters a valid email address and that the password is at least 8 characters long: < form # loginForm = "ngForm" ( ngSubmit )= "submitLoginForm()" > < div > < label > Email: </ label > < input type = "email" name = "email" ngModel required email > < div * ngIf = "loginForm.controls.email.errors?.required" > Email is required. </ div > < div * ngIf = "loginForm.controls.email.errors?.email" > Email is invalid. </ div > </ div > < div > < label > Password: </ label > < input type = "...

How to add router guard in Angular? Angular Router guards are used to prevent unauthorized access to certain routes in your Angular application. There are several types of guards that you can use with the Angular Router, including canActivate, canActivateChild, canDeactivate, and canLoad. Here is an example of how to use the canActivate guard to protect a route in your Angular application: First, create a new guard using the Angular CLI by running the following command in your terminal: ng generate guard auth This will create a new guard called 'auth' in your src/app/auth directory. Open the newly created auth.guard.ts file and add the following code:  import { Injectable } from '@angular/core' ; import { CanActivate , ActivatedRouteSnapshot , RouterStateSnapshot , UrlTree } from '@angular/router' ; import { Observable } from 'rxjs' ; import { AuthService } from './auth.service' ; import { Router } from '@angular/router...

In this Angular DatePipe tutorial, we are going to learn how to use Date Pipe operator to format the date as per the locale rule.  Angular DatePipe offers various predefined date formats; furthermore, we can also customize the date formats using DatePipe.   Angular 14 Date Pipe Example The Angular Date Pipe is a built-in pipe in Angular that formats a date value according to a specified format. The Date Pipe accepts various formats such as year, month, day, hour, minute, and second. To use the Date Pipe in your Angular application, you need to import the DatePipe module from the '@angular/common' package in your component.ts file. Here is an example of using the Date Pipe in an Angular component template: The current date and time is {{ currentDate | date: 'short' }} In the above example, currentDate is a variable containing the current date and time, and the date pipe is used to format the date value using the 'short' format. Now, let's take a look at...

In this article, We will learn how to solve 404 file or directory not found angular error in production.  Refresh browser angular 404 file or directory not found error You have built an Angular app and created a production build with ng build --prod You deploy it to a production server. Everything works fine until you refresh the page. The app throws The requested URL was not found on this server message (Status code 404 not found). It appears that angular routing not working on the production server when you refresh the page. The error appears on the following scenarios When you type the URL directly in the address bar. When you refresh the page The error appears on all the pages except the root page.   Reason for the requested URL was not found on this server error In a Multi-page web application, every time the application needs to display a page it has to send a request to the web server. You can do that by either typing the URL in the address bar, clicking on the Me...