Cannot access a disposed object. A common cause of this error is disposing a context

Question

I have written a simple application and when I navigate to my edit page the below error pops up.

Microsoft.EntityFrameworkCore.Query[10100]

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Answer 1

This is another anwser for who gonna read this topic.

I tried to trigger asnyc method with javascript. Because of that it can't triggered and so result didn't calculated by async method. I was returning json object to view like this in dotnet core mvc.

return Json(_service.AsyncMethod(parameter));

My IActionResult is not async so I can't add "await". I just add ".Result" and it calculate result.

return Json(_service.AsyncMethod(parameter).Result);