public void PushHistory()
{
//if (!IsPostBack)
{
URLHISTORY_NODE node = new URLHISTORY_NODE();
System.Collections.Stack stSession = (System.Collections.Stack)Session["URLHistoryStack"];
node.szKey = Request.FilePath.ToLower();
node.szURL = Request.Url.ToString();
if (stSession != null)
{
if (stSession.Count > 0)
{
URLHISTORY_NODE topnode = (URLHISTORY_NODE)stSession.Peek();
if (topnode.szKey != node.szKey)
{
stSession.Push(node);
}
}
else
{
stSession.Push(node);
}
}
else
{
System.Collections.Stack stNow = new System.Collections.Stack();
stNow.Push(node);
Session["URLHistoryStack"] = stNow;
}
}
}
public string PopHistory()
{
System.Collections.Stack stSession = (System.Collections.Stack)Session["URLHistoryStack"];
if (stSession != null)
{
if (stSession.Count > 1)
{
stSession.Pop();
URLHISTORY_NODE topnode = (URLHISTORY_NODE)stSession.Pop();
return(topnode.szURL);
}
}
return(null);
}
