Unhandled handling when using Entity Framework Core with ASP.NET Core 6.0 for complex queries
I'm reviewing some code and Could someone explain I'm collaborating on a project where Hey everyone, I'm running into an issue that's driving me crazy... I'm working with an unhandled exception when trying to execute a complex query using Entity Framework Core in my ASP.NET Core 6.0 application. The specific behavior message I'm receiving is: `System.InvalidOperationException: The operation failed because the DbContext has been disposed.` This occurs when I'm trying to fetch related data from multiple tables in a single query. Here's the LINQ query I'm using: ```csharp var result = await _context.Orders .Include(o => o.Customer) .Include(o => o.OrderItems) .Where(o => o.OrderDate > DateTime.Now.AddMonths(-1)) .Select(o => new { o.Id, CustomerName = o.Customer.Name, TotalItems = o.OrderItems.Sum(oi => oi.Quantity) }) .ToListAsync(); ``` I suspect that the scenario might be related to the lifetime of the `DbContext` since Iām using dependency injection and the context is scoped. I have registered my services in `Startup.cs` using: ```csharp services.AddDbContext<MyDbContext>(options => options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection"))); ``` I've also verified that the database connection string is correct and that my tables are populated. To troubleshoot, I've placed breakpoints and confirmed that the query executes without issues prior to the `ToListAsync()` method call. Additionally, I tried to load the data in a separate method and return it, but Iām still working with the same exception. Is there a common mistake I could be making with the DbContext lifetime or something specific to how I'm setting up my query? Any insights would be greatly appreciated! For context: I'm using Csharp on macOS. I'd really appreciate any guidance on this. Has anyone else encountered this? Any advice would be much appreciated. I'm working on a desktop app that needs to handle this. What would be the recommended way to handle this? This is happening in both development and production on Debian. Any ideas how to fix this? I'm on Linux using the latest version of Csharp. Thanks for your help in advance!