Difficulty with Asynchronous File I/O in C# - Getting 'ObjectDisposedException' in .NET 5
I've encountered a strange issue with I'm stuck trying to I'm stuck trying to I'm working with an `ObjectDisposedException` when trying to read from a file asynchronously using `FileStream` in .NET 5... My setup involves multiple threads trying to access the same file, and I thought using asynchronous I/O would help manage the concurrency. Here's a snippet of my code: ```csharp public async Task<string> ReadFileAsync(string path) { using (var fileStream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read)) { using (var reader = new StreamReader(fileStream)) { return await reader.ReadToEndAsync(); } } } ``` When I call this method from multiple threads, I occasionally receive an `ObjectDisposedException` behavior, indicating that I'm trying to access the file stream after it has been disposed. I initially assumed that using the `using` statement would ensure proper disposal, but it seems like the file stream is being disposed of before all read operations are complete. I've tried adding a lock around the call to ensure only one thread accesses the file at a time, like this: ```csharp private static readonly object fileLock = new object(); public async Task<string> ReadFileAsync(string path) { lock (fileLock) { using (var fileStream = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read)) { using (var reader = new StreamReader(fileStream)) { return await reader.ReadToEndAsync(); } } } } ``` However, this effectively makes the method synchronous, defeating the purpose of using asynchronous I/O. I also explored using `SemaphoreSlim` for better control over concurrent access but ran into similar issues. How should I handle asynchronous file access in a way that allows multiple threads to read concurrently without running into `ObjectDisposedException`? Is there a particular pattern or approach that I might be missing? Thanks for any help you can provide! Any feedback is welcome! Thanks for your help in advance!