Why Your .NET App Still Leaks Memory After Dispose: Expert Insights on princez
Memory leaks in .NET applications persist even after proper Dispose calls, frustrating developers and degrading performance. This comprehensive guide from princez explores why Dispose alone isn't enough, uncovering hidden pitfalls like finalizer suppression, event handler roots, and incorrect IDisposable patterns. We dissect common mistakes—such as forgetting to call Dispose on wrapped resources, mishandling async disposal, and confusing Dispose with garbage collection. Through practical examples and comparison tables, you'll learn to identify root causes using tools like dotMemory and PerfView, implement resilient patterns like Dispose(bool), and adopt proactive strategies including using blocks, CancellationTokenSource cleanup, and weak event patterns. Whether you're debugging a production crash or architecting new services, this article provides actionable steps to eliminate stubborn leaks, improve application health, and reduce technical debt. Last reviewed: May 2026.