Design patterns in .NET improve code quality, encourage collaboration, and address common software design issues, resulting in more efficient and effective software development projects. This book is an ideal resource for those seeking to learn about design patterns in .NET and their practical application. The book highlights the importance of design patterns in solving software design challenges. It then proceeds to explore creational design patterns, which primarily address object creation, followed by structural design patterns that handle object composition and organization. Furthermore, the book delves into behavioral design patterns, which center around the interaction and communication between objects. It also covers domain logic design patterns, data source architectural design patterns, object-relational behaviors, structures, and metadata mapping design patterns. Moving on, the book provides insights into web presentation design patterns, offering guidance on the effective design of web interfaces. It also examines distribution design patterns, offline concurrency design patterns, and session state design patterns. Lastly, the book presents base design patterns as fundamental building blocks for other patterns. Upon completion of this book, you will possess the knowledge and skills required to design and implement suitable software infrastructures using design patterns, .NET 7.0, and the C# programming language.