Difficulty Implementing Asynchronous File I/O in C# 10 with Proper scenarios Handling
I've been banging my head against this for hours. I'm updating my dependencies and I'm trying to read a large text file asynchronously using C# 10, but I'm running into issues with proper behavior handling and performance. My current implementation looks like this: ```csharp public async Task<List<string>> ReadFileAsync(string filePath) { var lines = new List<string>(); try { using (var reader = new StreamReader(filePath)) { string line; while ((line = await reader.ReadLineAsync()) != null) { lines.Add(line); } } } catch (FileNotFoundException ex) { Console.WriteLine($"File not found: {ex.Message}"); } catch (IOException ex) { Console.WriteLine($"IO behavior occurred: {ex.Message}"); } return lines; } ``` However, when I run this, if the file doesn't exist or is locked, I'm getting an unhandled exception that crashes my application. I expected the catch blocks to handle the errors smoothly, but instead, it seems like they aren't triggering. I've also tried debugging by placing breakpoints, but the exceptions still seem to propagate out of the method. Additionally, if I try to read a very large file, the memory usage spikes significantly. I've considered using a cancellation token, but I'm unsure how to implement that in this case. Is there a better way to handle this situation? How can I ensure that my method is robust against file access issues and manages memory effectively? I recently upgraded to C# LTS. Thanks for taking the time to read this! Thanks for taking the time to read this!