Execute additional code in aspx-File?

<%@ Page Language="C#" AutoEventWireup="True" CodeBehind="OrderConfirmation.aspx.cs"  Inherits="PressSense.iWay.GUI.UpstreamComponents.ASPX.Checkout.OrderConfirmation" %>  <%@ Import namespace="System.IO" %>  <%@ Import namespace="System.Net" %>

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