C#•15mo ago

❔ MongoDB.Driver.MongoConnectionException:

Hi, I have problem with finding document in MongoDB collection. Whenever method collection.find is fired, it throws this error: MongoDB.Driver.MongoConnectionException: An exception occurred while opening a connection to the server. ---> System.MissingMethodException: void System.Security.Cryptography.Rfc2898DeriveBytes..ctor(string,byte[],int,System.Security.Cryptography.HashAlgorithmName) here's code:

                var client = new MongoClient("here's my uri");
                var database = client.GetDatabase("test");
                var collection = database.GetCollection<PlayerModel>("playerdatas");

                var playerFilter = Builders<PlayerModel>.Filter.Eq("SteamID", player.UserId);
                //this line throws error
                var playerData = collection.Find(playerFilter).FirstOrDefault();

                var client = new MongoClient("here's my uri");
                var database = client.GetDatabase("test");
                var collection = database.GetCollection<PlayerModel>("playerdatas");

                var playerFilter = Builders<PlayerModel>.Filter.Eq("SteamID", player.UserId);
                //this line throws error
                var playerData = collection.Find(playerFilter).FirstOrDefault();

I'm using .NET framework 4.8.1, mongoDB 2.19.1 and Scram-SHA-1. Anyone know why it's happening?

7 Replies

phaseshift•15mo ago

Missing method exception is a binary mismatch of some sort. E.g running in wrong runtime, or loading wrong versions of libs

pan andrzej•15mo ago

So I should downgrade Mongodb version?

phaseshift•15mo ago

The version you mentioned should work, so it's probably something local on your machine that is setup wrong

pan andrzej•15mo ago

So what I should do in that case?

phaseshift•15mo ago

go through the various suggestions here https://stackoverflow.com/questions/8058832/system-missingmethodexception-method-not-found

Stack Overflow

System.MissingMethodException: Method not found?

Previous working asp.net webforms app now throws this error: System.MissingMethodException: Method not found The DoThis method is on the same class and it should work. I have a generic handler as...

pan andrzej•15mo ago

I tried everything, nothing worked 😕

Accord•15mo ago

Was this issue resolved? If so, run /close - otherwise I will mark this as stale and this post will be archived until there is new activity.

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❔ MongoDB.Driver.MongoConnectionException: