EmguCv threw exception DllNotFoundException: Unable to load DLL 'cvextern': (Exception from HRESULT: 0x8007007E)

I am getting(DllNotFoundException: Unable to load DLL 'cvextern': The specified module could not be found. (Exception from HRESULT: 0x8007007E)) this error when i try to click load button to get an image on windows form application i am using EmguCV library I guess i am missing some preferences which reference should i add ? Visual studio ide 2017

private void button1_Click(object sender, EventArgs e)
    {
        string FileName = "C:\\Users\\mete\\Pictures\\at-resimleri_184984.jpg";
        _InputImage = new Image<Bgr, byte>(FileName);
        if(_InputImage==null)
        {
            MessageBox.Show("Image is not read.");
            return;
        }
        imageBox1.Image = _InputImage;
    }

here is my references enter image description here