Code2night - Latest Programming Blogs & Tutorials

21

Jun

2026

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

Shubham Saini 122 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 200 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 152 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 128 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 123 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 263 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 123 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.

31

Dec

2022

Step-by-Step Guide to Your First C# Program with Examples

Shubham Saini 4,265 views

First C# Program

14

Mar

2026

Understanding Stacks and Queues in C: A Beginner's Guide

Shubham Saini 247 views

In this blog post, you'll learn about two fundamental data structures in computer science: stacks and queues. We'll explore their definitions, implementations in C, and practical applications to enhance your programming skills.

04

Apr

2026

Testing Gemini API Integration in ASP.NET Core: Tools and Techniques

Shubham Saini 252 views

This blog post will provide an exhaustive guide on testing Gemini API integration in ASP.NET Core, covering essential tools and techniques necessary for effective integration testing. Understanding how to properly test API integrations is crucial for ensuring reliability and performance in production applications. Readers should have a basic understanding of ASP.NET Core and RESTful API concepts.

24

Apr

2026

Integrating ActiveCampaign Marketing Automation with ASP.NET Core: A Comprehensive Guide

Shubham Saini 187 views

This guide will teach you how to effectively integrate ActiveCampaign's marketing automation capabilities into your ASP.NET Core applications. Understanding this integration is crucial for enhancing customer engagement and automating marketing tasks efficiently. Before diving in, familiarity with ASP.NET Core, RESTful APIs, and basic marketing concepts is beneficial.

20

Apr

2026

AWS S3 File Upload Integration in ASP.NET Core - Upload, Download and Presigned URLs

Shubham Saini 129 views

This comprehensive guide will teach you how to integrate AWS S3 for file uploads, downloads, and presigned URLs in an ASP.NET Core application. Understanding this integration is crucial for building scalable and secure applications that handle file storage in the cloud. Prior knowledge of ASP.NET Core and AWS services will be beneficial as we delve into the implementation details.

29

Mar

2026

Comprehensive Guide to Downloading and Setting Up Java 21

Shubham Saini 133 views

In this detailed guide, readers will learn how to download and set up Java 21, understand its new features, and explore its practical applications. This knowledge is crucial for developers looking to leverage the latest advancements in Java for robust application development. Familiarity with Java basics and prior installations will enhance the learning experience.

13

Mar

2026

Understanding Preprocessor Directives in C: A Beginner's Guide

Shubham Saini 180 views

In this blog post, we will explore the concept of preprocessor directives in C, their significance, and how they can be effectively used in your programs. By the end of this tutorial, you will have a solid understanding of how to leverage these directives to enhance your coding efficiency.

24

Mar

2026

CWE-119: Buffer Overflow - Understanding Memory Buffer Vulnerabilities in C#

Shubham Saini 176 views

This comprehensive guide delves into CWE-119, focusing on buffer overflow vulnerabilities in C#. Readers will gain a deep understanding of how these vulnerabilities arise, their implications, and how to prevent them in production code. A solid grasp of memory management and C# programming is recommended to fully benefit from this post.

17

May

2026

SignalR Integration in ASP.NET Core: Building a Real-Time WebSocket Chat Application

Shubham Saini 128 views

In this comprehensive guide, readers will learn how to implement SignalR in an ASP.NET Core application to create a real-time WebSocket chat application. This knowledge is crucial for developing interactive web applications that require live data updates without constant page refreshes. Prior familiarity with ASP.NET Core and basic WebSocket concepts will be beneficial for understanding the integration process.

09

Dec

2023

Database Backup .bak

Shubham Saini 3,262 views

Database Backup .bak

10

Sep

2020

Implement Stripe Payment Gateway In ASP.NET

Shubham Batra 59,101 views Watch Video

This tutorial demonstrates how to accept payments with Stripe Checkout in an ASP.NET application built with C# and Web Forms. The application uses Checkout to accept credit cards from the end user and send tokens to a back-end API. The back-end controller uses the Stripe .NET library to create a charge. There are four steps: Create the project and configure dependencies Create the payment Web Form Create a page to perform the charge Run the application

06

Jun

2026

CWE-915: Preventing Mass Assignment Vulnerabilities in ASP.NET Core Web API with DTOs

Shubham Saini 206 views

In this article, readers will learn how to mitigate mass assignment vulnerabilities in ASP.NET Core Web APIs using Data Transfer Objects (DTOs). Understanding this concept is crucial for securing applications against unauthorized data manipulation. Prior knowledge of ASP.NET Core, RESTful APIs, and basic security principles is recommended.

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

Step-by-Step Guide to Your First C# Program with Examples

Understanding Stacks and Queues in C: A Beginner's Guide

Testing Gemini API Integration in ASP.NET Core: Tools and Techniques

Integrating ActiveCampaign Marketing Automation with ASP.NET Core: A Comprehensive Guide

AWS S3 File Upload Integration in ASP.NET Core - Upload, Download and Presigned URLs

Comprehensive Guide to Downloading and Setting Up Java 21

Understanding Preprocessor Directives in C: A Beginner's Guide

CWE-119: Buffer Overflow - Understanding Memory Buffer Vulnerabilities in C#

SignalR Integration in ASP.NET Core: Building a Real-Time WebSocket Chat Application

Database Backup .bak

Implement Stripe Payment Gateway In ASP.NET

CWE-915: Preventing Mass Assignment Vulnerabilities in ASP.NET Core Web API with DTOs

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