private void btnBulk_Click(object sender, EventArgs e)
{
    OleDbCommand cmdBulk = new OleDbCommand(@"INSERT INTO tbl_Summary " +
            @"SELECT * FROM [Text;FMT=Delimited;HDR=NO;ACCDB=YES;Database=C:Database].[SalesData.csv]", MyConn);

    MyConn.Open();
    cmdBulk.ExecuteNonQuery();
    MyConn.Close();
}