This Windows Forms application demonstrates the event handler and observer pattern in C# using .NET Framework 2.0. It implements a text capitalization processor that uses custom events to delegate decisions about non-alphabetic characters to event subscribers. The project showcases the publisher-subscriber pattern with loose coupling, where the Processor class raises a CheckProcess event for each non-standard character, and the UI subscribes to handle these events interactively via message box prompts.
The solution is structured with four projects following a layered architecture: a WinForms executable entry point, an application layer containing the event-driven business logic with IProcessor interface and Processor implementation, a data layer, and a presentation layer with the MainForm. Key patterns demonstrated include custom EventArgs with two-way communication through the Skip property, null-safe event invocation, and lambda-based event subscription. This is a practical example of how C# events enable decoupled component communication.
- .NET Framework 2.0 or later
- Visual Studio (for WinForms designer support)
Open the solution in Visual Studio and run the Example project.
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