Populate checkboxlist with items from database using linq to sql?

The type or namespace name 'tblapplicationTypes' 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 System.Text;
using System.Windows.Forms;

namespace WindowsFormsApplication2
{
    public partial class Form1 : Form
    {
        dbDataContextDataContext dbDataContext = new dbDataContextDataContext();
        private BindingSource source = null;
        private dbDataContextDataContext context = null;
        public Form1()
        {
            InitializeComponent();
            if (context == null)
                context = new dbDataContextDataContext();
            if (source == null)
                source = new BindingSource();
        }

        private void OnLoad(object sender, EventArgs e)
        {
            source.DataSource = context.GetTable(typeof(tblapplicationTypes));
            checkedListBox1.DataSource = source;
            checkedListBox1.DisplayMember = "ApplicationType";
            checkedListBox1.ValueMember = "ID";
        }

        private void OnItemCheck(object sender, ItemCheckEventArgs e)
        {
            MessageBox.Show(string.Format("You have {0} {1}", e.NewValue == CheckState.Checked ? "checked" : "unchecked", (checkedListBox1.Items[e.Index] as tblApplicationType).ApplicationType));
        }
    }
}

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