Question 116282 in Mongodb Question posted in
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Mongodb – Cannot access a disposed object.nObject name: 'AsyncCursor

Trying to return Ok response but getting the exception:

Cannot access a disposed object.nObject name: 'AsyncCursor

Getting this on first line in if condition

        var users = await _userCollection.FindAsync(user => user.Phone == loginUser.phone);

        // if user found then login 
        // else create empty doc

        if (users.ToList().Count > 0)
        {
            var user = await users.FirstAsync();
            string token = new ShirtDeck.Utils.JwtUtil(configuration).GenerateJWT(user);
            return Ok(new { user = user, token = token });
        }

Expected to read the first document from the list.

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2

Answers


  1. Chosen as BEST ANSWER
    0

    So it is solved, I saved the result in a list and used that:

    var users = await _userCollection.FindAsync(user => user.Phone == loginUser.phone);

    var userList = users.ToList(); // saved result to list
    // if user found then login 
    // else create empty doc
    if (userList.Count > 0)
    {
        var user = userList.First();
        string token = new ShirtDeck.Utils.JwtUtil(configuration).GenerateJWT(user);
        return Ok(new { user = user, token = token });
    }

  2. 0

    when you call ToList, effectively you close cursor (users), so you should stop working with this cursor after that and proceed working with the cursor result (which you currently ignore).

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