Top 20 .NET Developer Interview Questions & Answers 🚀 💡 Code Optimization, Performance, & Error-Free Coding Tips!
1️⃣ What is code optimization in .NET, and why is it important? ➡️ It’s about making code run faster, use less memory, and reduce bugs—leading to efficient and maintainable projects. 2️⃣ How do you find performance bottlenecks in .NET apps? ➡️ Use tools like Visual Studio Profiler, JetBrains dotTrace, or Application Insights to spot slow code and fix it early! 3️⃣ Best data structures for fast data retrieval in .NET? ➡️ Prefer Dictionary for lookups, List for indexed access, and ConcurrentDictionary for thread-safe scenarios. 4️⃣ Why limit excessive logging in production code? ➡️ Too much logging = slower app + increased costs. Log only what’s essential! 5️⃣ How does async programming (async/await) boost performance? ➡️ Keeps your app responsive by handling multiple tasks without blocking threads. 6️⃣ Steps to reduce unnecessary memory allocations? ➡️ Use structs, re-use objects (object pooling), and avoid big objects unless truly needed. 7️⃣ H...