If Condition comparing sql command to the output label (face recognition)

I am doing a face recognition project, and i want to compare the x.label returned value with the saved ID into the database. I always get an error in IF condition comparing the ID with the x.label

public int Predict(Image<Gray, Byte> testImage)
        {

            Emgu.CV.FaceRecognizer.PredictionResult x;
            if (testImage != null)
            {
                x = fr.Predict(testImage);
                pictureBox1.Image = testImage.ToBitmap();
                //MessageBox.Show(x.Label.ToString()+" "+x.Distance.ToString());

                if (x.Distance < 69)
                    return x.Label;
                else
                    MessageBox.Show("Error!!, The detected Face is neither recognised nor enrolled");
                return -1;

                D1 = new OleDbDataAdapter("Select [ID] FROM [connect]", DBConnection);

                if (ID == x.Label)
                {
                    OleDbCommand insert1 = new OleDbCommand("Insert INTO OutputReprt (Attendance) values (yes)", DBConnection);
                }