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by Mark J. Price (Author)
An accessible guide for beginner-to-intermediate programmers to the concepts, real-world applications, and latest features of C# 13 and .NET 9, with hands-on exercises using Visual Studio and Visual Studio Code
Key Features:
- Explore the newest additions to C# 13, the .NET 9 class libraries, and Entity Framework Core 9
- Build professional websites and services with ASP.NET Core 9 and Blazor
- Enhance your skills with step-by-step code examples and best practices tips
Book Description:
This Packt bestseller continues to be the definitive guide to modern cross-platform development. The 9th edition of C# 13 and .NET 9 - Modern Cross-Platform Development Fundamentals has been updated to cover the latest features and improvements in .NET 9 and C# 13. You'll start by mastering object-oriented programming, learning how to write, test, and debug functions, and implementing interfaces. You'll then dive into .NET APIs for data management, filesystem operations, and serialization.
This latest edition integrates .NET 9 enhancements into its examples: faster exceptions, new LINQ methods. New ASP.NET Core 9 features include optimized static assets, built-in OpenAPI document generation, and the HybridCache.
Practical examples, such as building websites and services with ASP.NET Core, have been refreshed to utilize the latest .NET 9 features. The book also introduces Blazor with its new unified hosting model for unparalleled code reusability. With these updates, you'll learn how to build robust applications and services efficiently and effectively.
By the end of this book, you'll have the knowledge and confidence to create professional and high-performance web applications using the latest technologies in C# 13 and .NET 9.
What You Will Learn:
- Discover the new features of .NET 9, like faster exceptions and new LINQ methods
- Utilize the native AOT publish capability for ASP.NET Core 9 Minimal APIs web services
- Build rich web user interface experiences using Blazor in ASP.NET Core 9
- Integrate and update databases in your applications using Entity Framework Core 9 models
- Query and manipulate data using LINQ
- Build and consume powerful services using Minimal API
- Leverage the new .NET 9 features for optimized static assets, OpenAPI document generation, and HybridCache
Who this book is for:
This book is aimed at beginner to intermediate-level C# and .NET developers. While prior exposure to C# or .NET is not a prerequisite, a general understanding of programming concepts will be beneficial.
If you want to learn more technologies for building modern .NET projects like gRPC, SignalR, and .NET MAUI, read Mark's Apps and Services with .NET 8 book next; and if you aim to become a professional .NET developer quickly or mainly work on team projects, read his other book, Tools and Skills for .NET 8.
Table of Contents
- Hello, C#! Welcome, .NET!
- Speaking C#
- Controlling Flow, Converting Types, and Handling Exceptions
- Writing, Debugging, and Testing Functions
- Building Your Own Types with Object-Oriented Programming
- Implementing Interfaces and Inheriting Classes
- Packaging and Distributing .NET Types
- Working with Common .NET Types
- Working with Files, Streams, and Serialization
- Working with Data Using Entity Framework Core
- Querying and Manipulating Data Using LINQ
- Introducing Web Development Using ASP.NET Core
- Building Websites Using ASP.NET Core
- Building Web User Interfaces Using Blazor
- Building and Consuming Web Services
- In stock, ready to ship
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- ✔ Secure Checkout — SSL Encrypted Payments
- ✔ Fast Global Delivery — 3–11 Business Days
- ✔ Easy Returns on Eligible Items
- ✔ 100% Money-Back Guarantee — Full Refund if Not Satisfied
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Discover Officially Authorized Authentic Items at STORE7994.com - Certificates Available on Request!
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Trust score: 91/100
All designer items offered by STORE 7994 are sourced from trusted luxury distributors and verified through independent authentication services.
Learn how STORE 7994 authenticates luxury items
Guaranteed Authentic — Includes Brand Documentation & Third-Party Verification Options.
Shipping information
- Free Shipping* on all orders over $300 USD to most countries* Estimated delivery: 2-5 business days Mon-Sat to U.S., CA, EU etc.
- Tracking available: DHL Express
- Store 7994 Shipping policy
- Global delivery in 3–9 business days (location dependent).
- Free Worldwide Shipping $300+. International duties & VAT are calculated by destination country and may be collected upon delivery. UK orders are subject to 20% import VAT upon delivery.

Our innovation isn’t just in the brands we carry — it’s in the way we connect them. From our automation engine that keeps collections globally updated to our commitment to authenticity-first presentation, STORE 7994 exists where timeless design meets modern precision.
Every product we offer is:
Elevated · Intentional · Exclusive · Authentic
STORE 7994 is an authorized reseller of luxury fashion houses. Certificates and proof of authenticity are available to brand owners and partners upon request.
Returns & Refunds
We want you to shop with confidence at STORE 7994. If your purchase does not meet expectations, eligible items may be returned under the conditions below.
Return Eligibility
Items must be unused, unworn, and in original condition with all tags, packaging, and accessories included. Items showing any signs of wear or damage will not be accepted.
Return Window
Return requests must be made within 14 days of delivery.
Return Shipping
Customers are responsible for return shipping costs unless the item is defective, damaged, or incorrect.
Luxury Items
Items valued over $1,000 may be subject to a 7% restocking fee upon approved return.
Non-Returnable Items
For hygiene and product integrity reasons, the following items are final sale once opened or used:
• Underwear
• Fragrances
• Any worn or used items
Made-to-Order Items
Custom-designed products, including STORE 7994 hoodies, are made exclusively for each customer and are final sale. These items are not eligible for return or exchange unless defective or incorrect.
If you receive a defective or incorrect item, please contact us and we will make it right.
International Shipping & Duties
Many of our products ship directly from trusted international partners. Any applicable customs duties or import taxes are calculated at checkout and are non-refundable, even if the item is returned.
Returns & Associated Fees
All approved returns are subject to a $24 return processing fee. For international orders, duties, taxes, and return fees will be deducted from the original payment.
Shipping Policy
Complimentary shipping is offered on orders over $300. Orders below this threshold are subject to standard shipping rates at checkout.
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