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protected void Button1_Click(object sender, EventArgs e)
{
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Response.ContentType = "application/x-zip-compressed";
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Response.TransmitFile(filename);
}
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protected void Button2_Click(object sender, EventArgs e)
{
/*
using System.IO;
*/
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//default.aspx.cs
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
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