ASP.NET Core 6: how to to Properly Handle Large CSV File Uploads with IFormFile in a Web API
I'm currently working on an ASP.NET Core 6 Web API that is supposed to handle large CSV file uploads using `IFormFile`. However, when I attempt to upload a file larger than 10 MB, I encounter a `400 Bad Request` behavior, and the application seems to hang. I have configured the `RequestSizeLimit` in my `Startup.cs` file to allow larger files, but it doesn't seem to have any effect. Here's what I've tried so far: In my `Startup.cs`, I added the following configuration: ```csharp public void ConfigureServices(IServiceCollection services) { services.Configure<FormOptions>(options => { options.MultipartBodyLengthLimit = 104857600; // 100 MB }); services.AddControllers(); } ``` I also set the `MaxRequestBodySize` in the Kestrel server configuration like this: ```csharp public void Configure(IApplicationBuilder app, IWebHostEnvironment env) { app.UseRouting(); app.UseEndpoints(endpoints => { endpoints.MapControllers(); }); // Other middleware... } ``` In my controller, I have the following action method: ```csharp [HttpPost("upload")] public async Task<IActionResult> UploadCsv(IFormFile file) { if (file.Length == 0) return BadRequest("Empty file."); using (var stream = new StreamReader(file.OpenReadStream())) { // Process the file } return Ok(); } ``` I'm also testing this with Postman, and I ensure that I'm using the `form-data` option to send the file. Despite these configurations, I still receive a `400` behavior for larger files and nothing gets logged in the console. Could it be an scenario with the Kestrel server configuration or IIS settings if I deploy it there? Any insights on how to resolve this would be greatly appreciated!