Emotiv in C# - Error incluing library


I am new to C# and may be doing something wrong!

I have it connected and working with EmotivXavier Control Panel. I have written a code to get the raw data in csv from the EEG Emotiv.

I downloaded the Community SDK from Emotiv GitHub. There, I could find the DotNetEmotivSDK.dll. Together with many others: enter image description here

I added all this files to my project "/bin" folder and tried to reference all of them in the Visual Studio. Only one worked

enter image description here

Still, I could include use the Emotiv class in C#, only with this single dll.

But, when I run my code, this error shows up:

enter image description here

The error says:

Unhandled Exception: System.DllNotFoundException: Unable to load DLL 'edk.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E) at Emotiv.EdkDll.Unmanged_IEE_EmoEngineEventCreate() at Emotiv.EdkDll.IEE_EmoEngineEventCreate() in C:\Users\Becchi-PC\Documents\EEG\community-sdk-master\examples\C#\DotNetEmotivSDK\EdkDll.cs:line 756 at Emotiv.EmoEngine..ctor() in C:\Users\Becchi-PC\Documents\EEG\community-sdk-master\examples\C#\DotNetEmotivSDK\EmoEngine.cs:line 393 at Emotiv.EmoEngine.get_Instance() in C:\Users\Becchi-PC\Documents\EEG\community-sdk-master\examples\C#\DotNetEmotivSDK\EmoEngine.cs:line 418 at EEG.EEG_Logger..ctor() in C:\Users\Becchi-PC\Documents\EEG\EEG_v2\Program.cs:line 21 at EEG.EEG_Logger.Main(String[] args) in C:\Users\Becchi-PC\Documents\EEG\EEG_v2\Program.cs:line 97

The missing dll (Edk.dll) is one of those i couldnt reference.

This is my full code:

using System;
using System.Collections.Generic;
using System.IO;
using System.Threading;
using System.Reflection;

using Emotiv;

namespace EEG
    class EEG_Logger
        EmoEngine engine; //Criando a variavel com a Engine
        int userID = -1; //ID do usuario
        string filename = "outfile.csv"; //Arquivo de saida

            //Instanciando a Engine
            engine = EmoEngine.Instance;
            engine.UserAdded += new EmoEngine.UserAddedEventHandler(engine_UserAdded_Event);

            //Conectando ao EEG          

            //Criando o Header do CSV

        void engine_UserAdded_Event(object sender, EmoEngineEventArgs e)
            Console.WriteLine("User Added Event has occured");

            //Gravando o usuario 
            userID = (int)e.userId;

            //Permitindo a aquisicao de dados
            engine.DataAcquisitionEnable((uint)userID, true);

            //Determinando o tempo do buffer


        public void WriteHeader()
            TextWriter file = new StreamWriter(filename, false);

            string header = "COUNTER,INTERPOLATED,RAW_CQ,AF3,F7,F3, FC5, T7, P7, O1, O2,P8" +
                            ", T8, FC6, F4,F8, AF4,GYROX, GYROY, TIMESTAMP, ES_TIMESTAMP" +
                            "FUNC_ID, FUNC_VALUE, MARKER, SYNC_SIGNAL,";


        void Run()
            // Handle any waiting events

            // If the user has not yet connected, do not proceed
            if ((int)userID == -1)

            Dictionary<EdkDll.IEE_DataChannel_t, double[]> data = engine.GetData((uint)userID);

            if (data == null)

            int _bufferSize = data[EdkDll.IEE_DataChannel_t.IED_TIMESTAMP].Length;

            Console.WriteLine("Writing " + _bufferSize.ToString() + " lines of data ");

            // Write the data to a file
            TextWriter file = new StreamWriter(filename, true);

            for (int i = 0; i < _bufferSize; i++)
                //Escrevendo no arquivo
                foreach (EdkDll.IEE_DataChannel_t channel in data.Keys)
                    file.Write(data[channel][i] + ",");



        static void Main(string[] args)

            EEG_Logger p = new EEG_Logger();

            for (int i = 0; i < 10; i++)



Please help!


1 Answer


First of all, you should not be placing the dlls in the bin folder of your project, because that is the place where the referenced dlls are copied to, after build, not the place you should reference them from. So one option would be to copy the requested dlls in a location in your project and reference them from there (e.g.: a Lib folder).

Secondly, you can find the Emotiv SDK on github, and there is also a solution with examples, containing several projects: https://github.com/Emotiv/community-sdk/tree/master/examples/C%23. As you will notice, those projects reference the DotNetEmotivSDK project, so that would be your other option for solving your issue.

answered on Stack Overflow Jan 12, 2017 by Diana

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