[WebMethod]
public List<clsVFCustomer> GetVFCustomerList()
{
    List<clsVFCustomer> lstVFCust = new List<clsVFCustomer>();
    SqlConnection conn = new SqlConnection(ConfigurationManager.AppSettings["connString"].ToString());
    DataTable dt = new DataTable();
    SqlCommand command = new SqlCommand("SELECT * FROM VFCustomer", conn);
    command.CommandType = CommandType.Text;
    command.CommandTimeout = 0;
    SqlDataAdapter sda = new SqlDataAdapter(command);
    conn.Open();
    sda.Fill(dt);
    conn.Close();
    dt.TableName = "dt";
    if (dt.Rows.Count > 0)
    {
        for (int idx = 0; idx < dt.Rows.Count; idx++)
        {
            clsVFCustomer vfCust = new clsVFCustomer();
            vfCust.Name = dt.Rows[idx]["Name"].ToString();
            vfCust.Address = dt.Rows[idx]["Address"].ToString();
            vfCust.ContactNo = dt.Rows[idx]["ContactNo"].ToString();
            vfCust.Email = dt.Rows[idx]["Email"].ToString();
            lstVFCust.Add(vfCust);
        }
    }
    return lstVFCust;
}