BlogEngine.Web/error404.aspx.cs

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using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using BlogEngine.Core.Web.Controls;
using BlogEngine.Core;
using System.Collections.Generic;

public partial class error404 : BlogBasePage
{
  protected void Page_Load(object sender, EventArgs e)
  {
    if (Request.QueryString["aspxerrorpath"] != null && Request.QueryString["aspxerrorpath"].Contains("/post/"))
    {
      DirectHitSearch();
      divDirectHit.Visible = true;
    }
    else if (Request.UrlReferrer == null)
    {
      divDirectHit.Visible = true;
    }
    else if (Request.UrlReferrer.Host == Request.Url.Host)
    {
      divInternalReferrer.Visible = true;
    }
    else if (GetSearchKey() != string.Empty)
    {
      SearchTerm = GetSearchTerm(GetSearchKey());
      BindSearchResult();
      divSearchEngine.Visible = true;
    }
    else if (Request.UrlReferrer != null)
    {
      divExternalReferrer.Visible = true;
    }

    Page.Title += Server.HtmlEncode(" - " + "页面未找到");
  }

  private void DirectHitSearch()
  {
    string from = Request.QueryString["aspxerrorpath"];
    int index = from.LastIndexOf("/") + 1;
    string title = from.Substring(index).Replace(".aspx", string.Empty).Replace("-", " ");

    List<IPublishable> items = Search.Hits(title, false);
    if (items.Count > 0)
    {
      LiteralControl result = new LiteralControl(string.Format("<li><a href=\"{0}\">{1}</a></li>", items[0].RelativeLink.ToString(), items[0].Title));
      phSearchResult.Controls.Add(result);
    }
  }

  private void BindSearchResult()
  {
    List<IPublishable> items = Search.Hits(SearchTerm, false);
    int max = 1;
    foreach (IPublishable item in items)
    {