Building Business Apps in C: A Step-by-Step Guide to Enterprise Application Development is a comprehensive book that provides a detailed and practical approach to building business applications using C# and .NET. This step-by-step guide takes you through the entire process of developing a line-of-business application, covering essential topics such as planning data models and architecture, designing user interfaces with Windows Forms, and working with SQL Server databases and ORM frameworks like Entity Framework. The book also delves into implementing business logic and validation, generating reports using RDLC or third-party libraries, and deploying web-based apps to IIS. It emphasizes the importance of securing business apps with authentication/authorization and integrating with web APIs. Additionally, the book covers testing and debugging best practices, as well as deploying updates and managing versions. Furthermore, "Building Business Apps in C" explores building common business features such as order processing, inventory management, HR functions, and accounting. It also provides insights into building robust and secure enterprise apps by addressing scalability, performance, security best practices, concurrency, and transaction handling. The book concludes with a review of key concepts, suggestions for further resources, and guidance on the next steps in building business apps in C# and .NET.