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protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
ViewState["BackUrl"] = Request.UrlReferrer.ToString();
}
}
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/// </summary>
protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect(ViewState["BackUrl"].ToString());
}
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using System;
using System.Collections;
using System.ComponentModel;
using System.Web;
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