我已经在以下文章中实现了相同的方法，如果您需要进一步的帮助，请Plz告诉我，我将提供代码
http://rchern.wordpress.com/2008/05/11/updatepanel-backforward-browser-
navigation/
首先，您必须启用scriptManager历史记录EnableHistory =“ true”
在此示例中，我们将维护gridview分页，当用户浏览器后退按钮时，您必须在首次加载页面后添加历史记录点。
private void AddHistoryPoint(String key, String value, String tile){ scriptManager scm = scriptManager.GetCurrent(this.Page); if ((scm.IsInAsyncPostBack == true) && (scm.IsNavigating != true)) { if (pageState == null) {NamevalueCollection pageState = new NamevalueCollection(); } if (pageState[key] != null) { pageState[key] = value; } else { pageState.Add(key, value); } scm.AddHistoryPoint(pageState, tile); }}protected void grid_PageIndexChanged1(object sender, EventArgs e){ AddHistoryPoint("pi", grdProject.PageIndex.ToString(), "Page Index- " + (grdProject.PageIndex + 1).ToString());}在这里，您必须处理scriptManager导航事件
protected void scriptManager1_Navigate(object sender, System.Web.UI.HistoryEventArgs e){ if (e.State != null) { if (e.State["pi"] != null) { grid.PageIndex = Convert.ToInt32(e.State["pi"]); } }}
