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<configuration>
<system.web>
<sessionState cookieless="true"
regenerateExpiredSessionId="true" /
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protected void Button1_Click(object sender, EventArgs e)
{
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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
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