How do you debug both client-side and server-side issues in full-stack .NET applications?

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Debugging full-stack .NET applications involves handling both client-side and server-side issues efficiently. On the client-side, tools like browser developer tools (Chrome DevTools, Edge) help inspect HTML/CSS, monitor network requests, and debug JavaScript. Breakpoints can be set in TypeScript or JavaScript files, and source maps assist in tracing errors back to the original code. For Blazor WebAssembly, browser debugging and Visual Studio integration allow step-through debugging directly in C#.

On the server-side, Visual Studio or VS Code can be used to attach to the running process, set breakpoints, inspect variables, and analyze the call stack. Logging is crucial—using libraries like Serilog, NLog, or built-in ASP.NET Core logging helps trace issues and monitor behavior across environments. Exceptions should be logged with stack traces and context data.

End-to-end debugging includes using tools like Fiddler or Postman to test API requests and analyze responses. Errors returned from the API can be correlated with server logs. Unit and integration tests help isolate and verify issues. For asynchronous or distributed systems (e.g., microservices), distributed tracing with Application Insights or OpenTelemetry can reveal cross-service failures.

Overall, a structured approach—replicating the issue, examining logs, using breakpoints, inspecting requests/responses, and leveraging monitoring tools—enables efficient diagnosis and resolution of full-stack .NET issues.

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