protected void Page_Load(object sender, EventArgs e)
{
string cacheKey = "AdminBreadCrumb";
string breadCrumbFileContent = (string)Cache[cacheKey];
if (string.IsNullOrEmpty(breadCrumbFileContent))
{
// cache breadcrumb xml
string breadCrumbFile = Server.MapPath("~/App_Data/adminbreadcrumb.xml");
breadCrumbFileContent = File.ReadAllText(breadCrumbFile);
Cache.Add(cacheKey, breadCrumbFileContent, new CacheDependency(breadCrumbFile), Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration, CacheItemPriority.Normal, null);
}
XmlDocument breadCrumbMap = new XmlDocument();
breadCrumbMap.LoadXml(breadCrumbFileContent);
string pagePath = Request.AppRelativeCurrentExecutionFilePath.ToLowerInvariant();
if (pagePath.EndsWith("admin/menu.aspx") && !string.IsNullOrEmpty(Request.QueryString["path"]))
{
pagePath += "?path=" + Request.QueryString["path"].ToLowerInvariant();
}
List <BreadCrumbItem> breadCrumbList = GenerateBreadCrumbList(breadCrumbMap.DocumentElement, pagePath);
if (breadCrumbList != null)
{
foreach (BreadCrumbItem item in breadCrumbList)
{
ProcessRules(item);
}
List <BreadCrumbItem> expandedList = new List <BreadCrumbItem>();
foreach (BreadCrumbItem item in breadCrumbList)
{
expandedList.Add(item);
IList <BreadCrumbItem> childItems = GetChildItems(item);
if (childItems.Count > 0)
{
expandedList.AddRange(childItems);
}
}
// the last link does not need to do anything
expandedList[expandedList.Count - 1].Url = "#";
expandedList[expandedList.Count - 1].CssClass = "current";
BreadCrumbs.DataSource = expandedList;
BreadCrumbs.DataBind();
}
else
{
// no breadcrumb data, hide this control
this.Controls.Clear();
}
}