Code2night - Latest Programming Blogs & Tutorials

21

Jun

2026

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

Shubham Saini 940 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 1,429 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 469 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 408 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 438 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 987 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 384 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.

01

May

2026

Integrating LinkedIn OAuth in ASP.NET Core for Professional Login

Shubham Saini 252 views

In this post, you will learn how to implement LinkedIn OAuth integration in an ASP.NET Core application, allowing users to log in with their LinkedIn credentials securely. This integration not only enhances user experience by simplifying the login process but also leverages the professional network of LinkedIn for better user engagement. A foundational understanding of ASP.NET Core and OAuth concepts is recommended to maximize your learning from this guide.

11

Jun

2022

Changing sfgrid datasource does not work in Blazor

Shubham Batra 6,103 views

Hello guys, in this article we will discuss a issue that we face when we use sfgrid in Blazor. So sometimes while using SfGrid when we want to refresh data source of grid with different schema it doesn't refresh properly. We will see how to fix the issue Changing sfgrid datasource does not work in Blazor.

03

Jun

2026

CWE-311: Securely Encrypting Sensitive Data at Rest Using ASP.NET Core Data Protection API

Shubham Saini 244 views

This article will guide you through the intricacies of encrypting sensitive data at rest using the Data Protection API in ASP.NET Core, a vital step for maintaining data confidentiality and integrity. Understanding these concepts is crucial for developers who handle sensitive information like user credentials and personal data. A solid grasp of ASP.NET Core and C# is recommended to fully benefit from the examples and explanations provided.

28

Apr

2026

CWE-319: Enforcing HTTPS and HSTS in ASP.NET Core Applications

Shubham Saini 265 views

Readers will learn how to effectively enforce HTTPS and HTTP Strict Transport Security (HSTS) in ASP.NET Core applications to mitigate security risks. Understanding these concepts is crucial for protecting data in transit and ensuring secure communications. Prior knowledge of ASP.NET Core and basic web security principles will be beneficial.

28

Apr

2026

CWE-614: Configuring Secure Cookie Attributes in ASP.NET Core for Enhanced Security

Shubham Saini 500 views

In this comprehensive guide, you will learn how to configure secure cookie attributes in ASP.NET Core, focusing on HttpOnly, Secure, and SameSite attributes. Understanding these attributes is crucial for protecting web applications from common vulnerabilities such as cross-site scripting (XSS) and cross-site request forgery (CSRF). A foundational knowledge of ASP.NET Core and web security principles will be beneficial as we explore these concepts in depth.

08

Apr

2026

Using Jira REST API in ASP.NET Core for Efficient Task Management

Shubham Saini 293 views

This blog post will delve into how to effectively utilize the Jira REST API within an ASP.NET Core application for managing tasks. Understanding this integration is crucial for developers looking to streamline project management workflows and enhance team productivity. Readers should be familiar with ASP.NET Core and RESTful APIs to fully benefit from this tutorial.

07

May

2026

Integrating OpenAI DALL-E Image Generation in ASP.NET Core Applications

Shubham Saini 246 views

This blog post will explore the integration of OpenAI's DALL-E image generation capabilities into ASP.NET Core applications. Understanding this integration can enhance your application's user experience by providing dynamic image generation based on textual descriptions. Readers should have a basic understanding of ASP.NET Core and RESTful APIs to follow along effectively.

09

Jun

2026

CWE-276: Fixing Insecure Default Configurations in ASP.NET Core Middleware Pipeline

Shubham Saini 441 views

This article provides a comprehensive guide on addressing CWE-276 vulnerabilities related to insecure default configurations in the ASP.NET Core middleware pipeline. Understanding these vulnerabilities is crucial for building secure web applications, as default settings often expose applications to various attacks. Prior knowledge of ASP.NET Core middleware and basic security principles will enhance your understanding of the concepts discussed.

12

May

2026

Advanced Job Scheduling with Quartz.NET Integration in ASP.NET Core

Shubham Saini 240 views

In this post, readers will learn how to integrate Quartz.NET for advanced job scheduling in ASP.NET Core applications, enabling robust background processing capabilities. Understanding this integration is crucial for building scalable applications that require time-based task execution without blocking the main thread. Prior knowledge of ASP.NET Core fundamentals and C# is recommended for optimal comprehension.

24

Mar

2026

CWE-269: Improper Privilege Management - Implementing the Principle of Least Privilege in Security

Shubham Saini 498 views

This article explores CWE-269, focusing on the critical importance of the Principle of Least Privilege (PoLP) in software security. We will delve into its theoretical foundations, practical implementations, and real-world applications, providing comprehensive code examples and best practices. A solid understanding of access control mechanisms and security principles is beneficial for readers to grasp these concepts fully.

25

Sep

2023

Mastering 2-D Arrays in C: A Complete Guide with Examples

Shubham Batra 4,333 views

A two-dimensional (2D) array is an arrangement of items in C that are arranged in a grid and are individually identified by a pair of indices: a row index and a column index. A 2D array can be compared to a table or matrix that has rows and columns. A 2D array in C is declared, initialised, and used as follows:

27

Aug

2023

java.lang.NumberFormatException

Shubham Batra 4,159 views

A NumberFormatException is produced in Java when you try to convert a string to a numeric type (such as int, double, float, etc.) but the string's format is incompatible with the required format for that numeric type. This is common when using parsing techniques such as Integer.parseInt(), Double.parseDouble(), or Float.parseFloat().

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 LinkedIn OAuth in ASP.NET Core for Professional Login

Changing sfgrid datasource does not work in Blazor

CWE-311: Securely Encrypting Sensitive Data at Rest Using ASP.NET Core Data Protection API

CWE-319: Enforcing HTTPS and HSTS in ASP.NET Core Applications

CWE-614: Configuring Secure Cookie Attributes in ASP.NET Core for Enhanced Security

Using Jira REST API in ASP.NET Core for Efficient Task Management

Integrating OpenAI DALL-E Image Generation in ASP.NET Core Applications

CWE-276: Fixing Insecure Default Configurations in ASP.NET Core Middleware Pipeline

Advanced Job Scheduling with Quartz.NET Integration in ASP.NET Core

CWE-269: Improper Privilege Management - Implementing the Principle of Least Privilege in Security

Mastering 2-D Arrays in C: A Complete Guide with Examples

java.lang.NumberFormatException

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