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C# 10 - implementing Async Method Not Releasing Resources in a Using Statement

👀 Views: 51 💬 Answers: 1 📅 Created: 2025-08-06
async using file-io memory-leak dotnet-6 C#

I just started working with Does anyone know how to Quick question that's been bugging me - Quick question that's been bugging me - I'm experiencing an scenario with an asynchronous method that uses a `using` statement to manage resources... The intention is to properly dispose of a `Stream` object, but it seems like the resources are not being released as expected, leading to memory leaks and file locks. I have the following code: ```csharp public async Task ProcessFileAsync(string filePath) { using (var stream = new FileStream(filePath, FileMode.Open, FileAccess.Read)) { using (var reader = new StreamReader(stream)) { var content = await reader.ReadToEndAsync(); // Process content } } } ``` Even though I'm correctly using `using`, I still receive a `System.IO.IOException` indicating that the file is in use and want to be accessed after the method completes. I’ve tried adding `await Task.Delay(100)` after reading the file, thinking it might give the garbage collector time to clean up, but that didn’t help. Additionally, I've checked to ensure that no other processes are accessing the file. I’m using .NET 6.0 and this behavior occurs intermittently, which makes it hard to debug. Has anyone else encountered this scenario or have suggestions on how to ensure the resources are released properly in an asynchronous context? Any advice or alternative patterns I might be missing would be greatly appreciated! My development environment is Ubuntu. Any help would be greatly appreciated! For context: I'm using C# on macOS. How would you solve this? My development environment is Ubuntu 20.04. This is part of a larger application I'm building. How would you solve this?