private void button_rec_Click(object sender, EventArgs e)
 {
     if (MyFile == null && sensor != null)
     {
         this.textBox_sensorStatus.Text = "Initialize";
         this.textBox_sensorStatus.BackColor = Color.Yellow;
         DateTime thisDay = DateTime.UtcNow;
         string txtFileName = thisDay.ToString("dd.MM.yyyy_HH.mm");
         MyFile = new MyWrite(txtFileName);
         MyFile.setTextFeld(textFields1);
     }
 }
 private void button_recStop_Click(object sender, EventArgs e)
 {
     if (MyFile != null)
     {
         MyFile.MyCloseFile();
         this.textBox_sensorStatus.Text = "Recording captured";
         this.textBox_sensorStatus.BackColor = Color.White;
         MyFile = null;
     }
 }