Code2night - Latest Programming Blogs & Tutorials

21

Jun

2026

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

Shubham Saini 782 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 1,328 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 381 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 329 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 364 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 914 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 316 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.

20

Mar

2026

Mastering NumPy for Data Science: A Comprehensive Guide

Shubham Saini 185 views

In this guide, you will master NumPy, the foundational library for numerical computing in Python, essential for data science. Understanding NumPy is crucial as it significantly enhances performance in data manipulation and analysis. Before diving in, familiarity with Python programming and basic mathematical concepts will be beneficial.

03

Apr

2026

Mastering React Performance Optimization: A Deep Dive into useMemo, useCallback, and memo

Shubham Saini 278 views

In this detailed guide, you will learn how to effectively optimize React applications using useMemo, useCallback, and memo. Understanding these concepts is crucial for building efficient, high-performance user interfaces, especially in complex applications. A foundational knowledge of React hooks and component re-rendering behavior will be beneficial before diving into this topic.

22

Apr

2026

Handling JWT Token Expiration Without Refresh Logic in ASP.NET Core

Shubham Saini 227 views

In this blog post, readers will explore the intricacies of handling JWT token expiration in ASP.NET Core applications without relying on refresh tokens. Understanding this concept is crucial for building secure and efficient web applications. Prior knowledge of ASP.NET Core, JWT, and RESTful services is recommended.

24

Mar

2026

Understanding Explicit and Implicit Type Conversion in Python: A Comprehensive Guide

Shubham Saini 367 views

Readers will learn the fundamental differences between explicit and implicit type conversion in Python, why each type exists, and how they address specific programming challenges. Understanding these concepts is crucial for writing robust and error-free code, particularly when dealing with different data types. A basic understanding of data types in Python is required, including integers, floats, strings, and lists.

09

Dec

2023

Create Database and CRUD operation

Shubham Saini 3,676 views Watch Video

Hello guys in this tutorial , we will learn the first step of using sql server. We will see how we can create database and perform crud operation using sql queries.

28

Apr

2026

Integrating MSG91 for OTP and SMS in ASP.NET Core Applications

Shubham Saini 674 views

This tutorial covers the integration of MSG91 for One-Time Password (OTP) and SMS functionality in ASP.NET Core applications. Understanding this integration is crucial for enhancing user authentication and communication within your applications. Prerequisites include knowledge of ASP.NET Core and basic understanding of REST APIs.

22

Dec

2022

Reading json data from file using Asp.Net

Shubham Batra 5,669 views Watch Video

Hello guys, sometimes while using asp.net web application we face need to read json data from json files and parse them in c# . So will see how to read json data from file and parse using Asp.Net.

03

May

2026

Integrating MinIO Object Storage in ASP.NET Core: A Self-Hosted S3 Alternative

Shubham Saini 339 views

This post explores how to integrate MinIO, a high-performance object storage solution, into your ASP.NET Core applications. Understanding this integration is crucial for developers looking to leverage scalable storage solutions without relying on public cloud providers. Before diving in, familiarity with ASP.NET Core and basic cloud storage concepts will be beneficial.

09

Dec

2023

Operator Overloading in C++

Shubham Saini 3,571 views

Operator overloading in C++ allows you to define how operators behave when used with objects of user-defined classes. You can customize the behavior of operators, such as +, -, *, /, ==, and many others, to work with your own classes, making your code more intuitive and expressive.

25

Mar

2026

Understanding CWE-476: NULL Pointer Dereference - Causes, Impact and Prevention

Shubham Saini 376 views

This article delves into the vulnerabilities associated with NULL pointer dereference, a critical issue in software security. Readers will learn how this common flaw can lead to application crashes, unexpected behavior, and security breaches. A foundational understanding of pointers and memory management in programming is recommended to fully grasp the concepts discussed.

23

Apr

2026

Comprehensive Guide to QR Code Generation in ASP.NET Core Using QRCoder Library

Shubham Saini 200 views

In this tutorial, you will learn how to generate QR codes in an ASP.NET Core application utilizing the QRCoder library. Understanding QR codes and their implementation can significantly enhance user engagement and data sharing capabilities in web applications. Prior knowledge of C# and ASP.NET Core fundamentals is essential to follow along effectively.

20

Mar

2026

Understanding CWE-643: XPath Injection - Attacking and Securing XML Query Interfaces

Shubham Saini 259 views

This article delves into the intricacies of XPath Injection, a critical security vulnerability in XML query interfaces. Readers will learn about its mechanisms, implications, and how to effectively mitigate such risks. A firm grasp of XML, XPath, and basic web application security principles will be beneficial.

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

Mastering NumPy for Data Science: A Comprehensive Guide

Mastering React Performance Optimization: A Deep Dive into useMemo, useCallback, and memo

Handling JWT Token Expiration Without Refresh Logic in ASP.NET Core

Understanding Explicit and Implicit Type Conversion in Python: A Comprehensive Guide

Create Database and CRUD operation

Integrating MSG91 for OTP and SMS in ASP.NET Core Applications

Reading json data from file using Asp.Net

Integrating MinIO Object Storage in ASP.NET Core: A Self-Hosted S3 Alternative

Operator Overloading in C++

Understanding CWE-476: NULL Pointer Dereference - Causes, Impact and Prevention

Comprehensive Guide to QR Code Generation in ASP.NET Core Using QRCoder Library

Understanding CWE-643: XPath Injection - Attacking and Securing XML Query Interfaces

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