protected void btnSubmit_Click(object sender, EventArgs e)
    {
        DataTable dts = objdataaccess.GetDatatable("Select * from tblCustomer where CustomerID=" + Session["CustomerID"]);

        if (dts.Rows.Count > 0)
        {
            hidden_oldpass.Value = dts.Rows[0]["Password"].ToString();
            if (txtCurrentPassword.Text == hidden_oldpass.Value)
            {
                objCustomer.UpdateCustomerPassword(Convert.ToInt32(Session["customerID"].ToString()), txtCurrentPassword.Text, txtConfirmPassword.Text);
                Page.RegisterStartupScript("Msg1", "<script>alert('Password changed successfully !!!');</script>");
                clear();
            }
            else
            {
                Page.RegisterStartupScript("Msg1", "<script>alert('Current password is not valid !!!');</script>");
            }
        }
    }