Code2night - Latest Programming Blogs & Tutorials

21

Jun

2026

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

Shubham Saini 74 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 153 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 122 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 108 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 99 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 127 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 92 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.

16

Mar

2026

Understanding Records and Pattern Matching in C# 9 and Above

Shubham Saini 171 views

In this blog post, we will explore the new features of Records and Pattern Matching introduced in C# 9 and above. These features provide a modern approach to defining data structures and make it easier to write expressive and readable code.

28

May

2026

Integrating Currency and Exchange Rate API in ASP.NET Core for Real-Time Forex Data

Shubham Saini 135 views

This tutorial covers the integration of a Currency and Exchange Rate API in ASP.NET Core, enabling real-time forex data retrieval. Understanding how to implement this functionality is crucial for applications requiring currency conversion and financial data analysis. Prior knowledge of ASP.NET Core and RESTful API concepts will be beneficial.

19

Apr

2023

How to Verify If base 64 string is valid for tiff image in C#

Shubham Batra 7,134 views

Hello guys sometimes we often need to convert base64 to tiff data and we have to verify if the base64 is correct for tiff image. So we will see how to Verify If base 64 string is valid for tiff image in C#.

09

Apr

2026

Debugging SQL Queries in Python: Common Pitfalls and Fixes

Shubham Saini 231 views

This comprehensive guide explores the essential techniques for debugging SQL queries in Python, highlighting common pitfalls and their effective solutions. Understanding these debugging strategies is crucial for developers who rely on SQL for data manipulation and need to ensure accurate results. Readers should have a basic understanding of Python and SQL syntax to fully benefit from the examples provided.

19

Mar

2026

CWE-522: Insufficiently Protected Credentials - Secure Password Storage with Hashing

Shubham Saini 149 views

This post delves into CWE-522, focusing on the importance of secure password storage using hashing techniques. Understanding how to protect user credentials is critical for building secure applications and preventing data breaches. Readers should have a basic understanding of programming concepts and security principles.

01

Apr

2026

Mastering SQL Server Performance Tuning: Proven Tips and Techniques

Shubham Saini 103 views

This comprehensive guide provides in-depth SQL Server performance tuning tips that enhance database efficiency and speed. Understanding these techniques is crucial for database administrators and developers who need to optimize their SQL Server environments. Familiarity with SQL Server architecture and basic SQL queries will aid in grasping the concepts discussed.

05

Dec

2023

Integrate Razorpay Payment Gateway in ASP.NET Core 8.0

Shubham Batra 11,710 views Watch Video

We will discover how to integrate the Razorpay payment gateway with ASP.Net Core in this tutorial. Here, we go over Razor Pay and show you how to incorporate it into ASP.Net Core MVC. Please read through my earlier post, "Build CRUD REST APIs with EF Core." You can view the result of our integration of Razorpay with ASP.Net Core MVC at the conclusion of this post.

16

Mar

2026

Understanding Collections in C#: List, Dictionary, Queue, and Stack

Shubham Saini 164 views

In C#, collections are essential data structures that allow developers to manage groups of objects efficiently. This blog post will cover four primary types of collections: List, Dictionary, Queue, and Stack, including their usages and practical examples.

31

Aug

2023

NoSuchwindowException in Java

Shubham Batra 4,054 views

The NoSuchWindowException in Java is an exception that's thrown when a WebDriver (typically from a Selenium framework) tries to switch to a window that does not exist. This usually occurs in web automation scenarios when you're working with multiple browser windows or tabs

09

Dec

2023

Complete Guide to Creating a Registration Form in HTML/CSS

Shubham Saini 4,379 views

Creating an HTML registration form entails the use of numerous form elements, such as text inputs, radio buttons, checkboxes, and buttons. Here's a simple HTML registration form example:

16

Mar

2026

Mastering Async and Await in C#: A Comprehensive Guide

Shubham Saini 118 views

In this blog post, you will learn about the concepts of async and await in C#, their significance in improving application performance, and how to implement them effectively. We'll explore the fundamentals, practical examples, best practices, and common pitfalls to avoid.

31

Dec

2022

Complete Guide to C# Collections with Examples and Tips

Shubham Batra 4,651 views

For many applications, you want to create and manage groups of related objects. There are two ways to group objects: by creating arrays of objects, and by creating collections of objects. Arrays are most useful for creating and working with a fixed number of strongly typed objects. For information about arrays, see Arrays.

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

Understanding Records and Pattern Matching in C# 9 and Above

Integrating Currency and Exchange Rate API in ASP.NET Core for Real-Time Forex Data

How to Verify If base 64 string is valid for tiff image in C#

Debugging SQL Queries in Python: Common Pitfalls and Fixes

CWE-522: Insufficiently Protected Credentials - Secure Password Storage with Hashing

Mastering SQL Server Performance Tuning: Proven Tips and Techniques

Integrate Razorpay Payment Gateway in ASP.NET Core 8.0

Understanding Collections in C#: List, Dictionary, Queue, and Stack

NoSuchwindowException in Java

Complete Guide to Creating a Registration Form in HTML/CSS

Mastering Async and Await in C#: A Comprehensive Guide

Complete Guide to C# Collections with Examples and Tips

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