Code2night - Latest Programming Blogs & Tutorials

21

Jun

2026

Fix Gemini API Error 429: Quota Exceeded on Free Tier (System.InvalidOperationException)

Shubham Saini 1,052 views

Getting System.InvalidOperationException with Gemini API Error 429 (Quota Exceeded) on the Free Tier? You're not alone! This blog explains why this happens, covers free tier rate limits, and shows you how to fix it fast with retry logic, best practices, and tips on using image models in Gemini free tier.

13

Jun

2026

How to Build a Text-to-SQL AI Chatbot with Semantic Kernel and OpenAI in .NET 8

Shubham Saini 1,506 views Watch Video

Step-by-step tutorial to build a natural language to SQL chatbot using Microsoft Semantic Kernel, OpenAI function calling, and SQL Server in a .NET 8 Razor Pages app — with source code, architecture, pros, cons, and performance tips.

13

Jun

2026

Test Blog or whatever title you wnat

Shubham Saini 8 views

Here you have to add the descripion

12

Jun

2026

How to Generate Claude API Key & Setup Billing | Anthropic Claude Tutorial

Shubham Saini 537 views Watch Video

In this tutorial, we walk you through how to generate your Claude API key from the Anthropic Console and set up billing for your account. Whether you're a developer or just getting started with AI, this step-by-step guide makes it easy to get up and running with Claude AI quickly and securely.

12

Jun

2026

How to Boost Your YouTube Channel Performance Easily & Automatically with Claude AI Chrome Extension

Shubham Saini 478 views Watch Video

Growing a YouTube channel takes more than just uploading great content — it also requires ongoing optimization of your video titles, descriptions, and metadata to stay discoverable. But manually reviewing every video on your channel is time-consuming and tedious. What if an AI could do that for you, automatically, right inside your browser? In this tutorial, we show you exactly how to use the Claude AI Chrome Extension to analyze your YouTube channel, identify low-performing videos, and autom

11

Jun

2026

Implementing Two-Factor Authentication (2FA) in ASP.NET Core Identity

Shubham Saini 498 views

This guide provides a comprehensive approach to implementing Two-Factor Authentication (2FA) using ASP.NET Core Identity, enhancing security for web applications. Understanding 2FA is crucial as it adds an additional layer of protection against unauthorized access, thereby mitigating risks associated with credential theft. Familiarity with ASP.NET Core Identity and basic authentication concepts is essential before proceeding with the implementation.

11

Jun

2026

Securing ASP.NET Core appsettings.json Using Environment Variables and Secret Management

Shubham Saini 1,067 views

This article explores how to secure sensitive information in ASP.NET Core applications by utilizing environment variables and the built-in secret management system. Understanding these concepts is crucial for preventing exposure of sensitive data in production environments. Readers should have a basic understanding of ASP.NET Core and its configuration system before diving in.

11

Jun

2026

Preventing Sensitive Data Exposure in ASP.NET Core API Responses with JsonIgnore

Shubham Saini 444 views

In this post, readers will learn how to effectively use the JsonIgnore attribute in ASP.NET Core to prevent sensitive data exposure in API responses. This is crucial for maintaining data privacy and security in modern web applications. A fundamental understanding of ASP.NET Core and JSON serialization is recommended for optimal comprehension.

17

Apr

2026

Integrating Google Drive API with ASP.NET Core: A Step-by-Step Guide

Shubham Saini 401 views

In this guide, you will learn how to effectively integrate the Google Drive API with ASP.NET Core applications, enabling you to manage files directly from your web applications. Understanding this integration is crucial for developers looking to enhance their applications with cloud storage capabilities, offering users seamless file handling. Before diving in, ensure you have a basic understanding of ASP.NET Core and RESTful APIs.

19

May

2023

C# Regex Examples

Shubham Batra 4,549 views

The Regex class in C# is part of the System.Text.RegularExpressions namespace. It provides a way to work with regular expressions, allowing you to perform pattern matching and manipulation of text. Here are some common operations you can perform using the Regex class:

13

Sep

2023

Method Overriding in Java

Shubham Batra 4,029 views

Overriding methods is a key idea in Java object-oriented programming. It enables a subclass to provide a particular implementation of a method defined in the superclass. When you override a method, you replace the superclass's inherited implementation with your own version in the subclass. This allows for polymorphism and dynamic method dispatch.

03

Apr

2026

Fetching Data with Axios in React: A Comprehensive Guide

Shubham Saini 310 views

This guide will explore how to effectively fetch data in a React application using Axios, a popular promise-based HTTP client. Understanding data fetching is crucial for building dynamic web applications that communicate with APIs. Readers should be familiar with basic React concepts and JavaScript ES6 features.

27

Aug

2023

java.lang.ArrayIndexOutOfBoundsException in Java

Shubham Batra 4,103 views Watch Video

An ArrayIndexOutOfBoundsException is a runtime exception in Java that happens when you attempt to access an array element with an index that is outside the array's valid range of indices. In other words, you're attempting to access an element in the array at an index that doesn't exist.

09

Dec

2023

Defining CSS Classes: A Complete Guide with Examples in HTML/CSS

Shubham Saini 3,733 views

In HTML, you can define classes using Cascading Style Sheets (CSS) to apply specific styling to multiple HTML elements. Here's how you can define classes in CSS within an HTML document:

09

Dec

2023

If Else Statement

Shubham Saini 3,831 views

In C# if-else statement also tests the condition. It executes the if block if the condition is true otherwise else block, is executed. the else statement to specify a block of code to be executed if the condition is False. the if-else statement checks a Boolean expression and executes the code based on if the expression is true or false. The if part of the code executes when the value of the expression is true. The else part of the code is executed when the value of the expression is false.

09

Oct

2020

Microsoft Outlook Get and Add Contacts Asp.Net MVC

Shubham Batra 13,859 views Watch Video

we will learn Microsoft Outlook Add Contacts and Get Contacts service. We will learn how to add and get Contacts using Microsoft Exchange Service.

16

May

2026

Integrating Mapbox in ASP.NET Core for Custom Maps and Geospatial Data Management

Shubham Saini 259 views

Readers will learn how to integrate Mapbox with ASP.NET Core to create custom maps and manage geospatial data effectively. Understanding this integration is crucial for developing modern web applications that require location-based services. Familiarity with ASP.NET Core and basic knowledge of JavaScript will be beneficial to follow along.

20

Apr

2026

Resolving 'No Database Provider Configured' in Entity Framework Core for ASP.NET Core Applications

Shubham Saini 223 views

In this article, readers will learn how to properly configure Entity Framework Core to avoid the 'No Database Provider Configured' error. This issue commonly arises when the database context is not set up correctly, leading to runtime exceptions that can halt application execution. Understanding the configuration process and best practices for using EF Core is essential for building robust ASP.NET Core applications.

01

Apr

2026

Mastering CSS Flexbox: A Comprehensive Guide to Responsive Layouts

Shubham Saini 250 views

This tutorial delves into CSS Flexbox, a powerful layout model that simplifies the creation of responsive web designs. Understanding Flexbox is crucial for modern web development as it allows for efficient alignment and distribution of space among items in a container. Familiarity with basic HTML and CSS is necessary to fully grasp the concepts discussed herein.

27

Mar

2026

Mastering Inheritance and Polymorphism in Python: A Comprehensive Guide

Shubham Saini 540 views

This article delves into the core concepts of inheritance and polymorphism in Python, illuminating their significance in object-oriented programming. Understanding these principles is crucial for architecting scalable and maintainable applications. Readers should have a basic grasp of Python syntax and object-oriented programming concepts.

Free Programming Tutorials, Blogs & Developer Tools

Fix Gemini API Error 429: Quota Exceeded on Free Tier (System.InvalidOperationException)

How to Build a Text-to-SQL AI Chatbot with Semantic Kernel and OpenAI in .NET 8

Test Blog or whatever title you wnat

How to Generate Claude API Key & Setup Billing | Anthropic Claude Tutorial

How to Boost Your YouTube Channel Performance Easily & Automatically with Claude AI Chrome Extension

Implementing Two-Factor Authentication (2FA) in ASP.NET Core Identity

Securing ASP.NET Core appsettings.json Using Environment Variables and Secret Management

Preventing Sensitive Data Exposure in ASP.NET Core API Responses with JsonIgnore

Integrating Google Drive API with ASP.NET Core: A Step-by-Step Guide

C# Regex Examples

Method Overriding in Java

Fetching Data with Axios in React: A Comprehensive Guide

java.lang.ArrayIndexOutOfBoundsException in Java

Defining CSS Classes: A Complete Guide with Examples in HTML/CSS

If Else Statement

Microsoft Outlook Get and Add Contacts Asp.Net MVC

Integrating Mapbox in ASP.NET Core for Custom Maps and Geospatial Data Management

Resolving 'No Database Provider Configured' in Entity Framework Core for ASP.NET Core Applications

Mastering CSS Flexbox: A Comprehensive Guide to Responsive Layouts

Mastering Inheritance and Polymorphism in Python: A Comprehensive Guide

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