Memory Leak Hunting in .NET MAUI: Patterns, Tools, and Solutions
On memory-constrained mobile devices, even small leaks lead to slowdowns, battery drain, and crashes. This guide arms you with the patterns, tools, and best practices to keep .NET MAUI apps lean and reliable.
What you’ll learn
- Why lingering references defeat the GC, and how that plays out badly on mobile
- The most common leak patterns: unremoved event handlers, static references, long-lived services holding UI references, and closures capturing UI objects — each with a concrete fix
- Detection tools: Visual Studio Diagnostic Tools memory snapshots,
dotnet-counters, and JetBrains dotMemory for retention-path analysis - A practical reproduction strategy using navigation plus
GC.Collect()to confirm whether a page is truly leaking - Prevention best practices: unsubscribing from events, avoiding static UI references, using
WeakReference, keeping ViewModels lightweight, and repeated navigation testing
Essential reading if you want your MAUI apps to stay stable over long sessions.