bound datagridview sbut empty fill with Excel data

using System;
using System.Data;
using System.Linq;
using System.Windows.Forms;
using System.IO;
using Excel;

namespace linqFoxExcelSql
{
    public partial class Form1 : Form
    {
        // linq Context to Stats table - Stats is empty - want to fill with excel data
        DataClasses1DataContext db = new DataClasses1DataContext();

        public Form1()
        {
            InitializeComponent();
        }
 
        // open excedl and fill result with the data
        DataSet result;
        private void btnOpen_Click(object sender, EventArgs e)
        {
            using (OpenFileDialog ofd = new OpenFileDialog() { Filter = "Excel Workbook|*.xls", ValidateNames = true })
            {
                if (ofd.ShowDialog() == DialogResult.OK)
                {
                    FileStream fs = File.Open(ofd.FileName, FileMode.Open, FileAccess.Read);
                    IExcelDataReader reader = ExcelReaderFactory.CreateBinaryReader(fs);

                    result = reader.AsDataSet();

                    cboSheet.Items.Clear();
                    foreach (System.Data.DataTable dt in result.Tables)
                        cboSheet.Items.Add(dt.TableName);
                    reader.Close();

                }
            }
        }

        // scbosheet changed get the records
        private void cboSheet_SelectedIndexChanged(object sender, EventArgs e)
        {
            dataGridView1.DataSource = result.Tables[cboSheet.SelectedIndex];
        }

        // use linq to attach or empty sql table - i want to fill this with excel data
        private void Form1_Load(object sender, EventArgs e)
        {
            var Answer = from c in db.Stats
                         select c;
            dataGridView1.DataSource = Answer;
        }
    }
}