The type or namespace name 'LogMsgType' could not be found (are you missing a using directive or an assembly reference?)

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using CSOCR.Properties;
using System.Text;
using System.IO;
using System.Windows.Forms;
using System.IO.Ports;
using System.Threading;

namespace CSOCR
{
    public partial class Form1 : Form
    {

        // The main control for communicating through the RS-232 port
        private SerialPort comport = new SerialPort();

        // Various colors for logging info
        private Color[] LogMsgTypeColor = { Color.Blue, Color.Green, Color.Black, Color.Orange, Color.Red };
        
        // Temp holder for whether a key was pressed
        private bool KeyHandled = false;

        private Settings settings = Settings.Default;
        public Form1()
        {
            // Load user settings
            settings.Reload();

            // Build the form
            InitializeComponent();

            // Restore the users settings
            InitializeControlValues();

            // Enable/disable controls based on the current state
            EnableControls();

            // When data is recieved through the port, call this method
            comport.DataReceived += new SerialDataReceivedEventHandler(port_DataReceived);
            comport.PinChanged += new SerialPinChangedEventHandler(comport_PinChanged);
        }
      
       
              
        private void Log(LogMsgType msgtype, string msg)           //  this is my first error
        {
            rtfTerminal.Invoke(new EventHandler(delegate
            {
                rtfTerminal.SelectedText = string.Empty;
                rtfTerminal.SelectionFont = new Font(rtfTerminal.SelectionFont, FontStyle.Bold);
                rtfTerminal.SelectionColor = LogMsgTypeColor[(int)msgtype];
                rtfTerminal.AppendText(msg);
                rtfTerminal.ScrollToCaret();
            }));
        }
       
        private DataMode CurrentDataMode                        // this is my second error
        {
            get
            {
                if (rbHex.Checked) return DataMode.Hex;
                else return DataMode.Text;
            }
            set
            {
                if (value == DataMode.Text) rbText.Checked = true;
                else rbHex.Checked = true;
            }
        }
    }
}