/// <summary>
/// Gets the matching site map menu item.
/// </summary>
/// <param name="menuName">Name of the menu.</param>
/// <param name="pathAndQuery">The path and query.</param>
/// <param name="useCache">if set to <c>true</c> [use cache].</param>
/// <returns></returns>
public ISiteMapMenuItem GetMatchingSiteMapMenuItem(string menuName, string pathAndQuery, bool useCache)
{
if (!this.SiteMapMenus.ContainsKey(menuName))
{
throw new NavigationException("Menu " + menuName + " not found at the SiteMapMenu section.");
}
ISiteMapMenu menu = this.SiteMapMenus[menuName];
IUrlRewriteItem rewriteItem;
if (useCache && menu.EnableCaching)
{// we want to get the menu item from cache
// define cachekey
string cacheKey = "__" + menuName + "_" + pathAndQuery;
lock (_ISiteMapMenuItemLock)
{
ISiteMapMenuItem item = HttpRuntime.Cache[cacheKey] as ISiteMapMenuItem;
if (item != null)
{// item found at cache collection, so return it
return(item);
}
else
{// item not found at cache collection, so find/insert it
rewriteItem = this.SiteMapUrls.GetMatchingRewriteItem(pathAndQuery);
if (rewriteItem != null)
{
item = menu.GetMatchingSiteMapMenuItem(rewriteItem.Name);
}
if (item != null)
{
HttpRuntime.Cache.Remove(cacheKey);
HttpRuntime.Cache.Insert(cacheKey
, item
, null
, DateTime.Now.AddSeconds(menu.CacheDurationInSeconds)
, Cache.NoSlidingExpiration
, menu.CacheItemPriority
, null);
return(item);
}
}
}
}
rewriteItem = this.SiteMapUrls.GetMatchingRewriteItem(pathAndQuery);
if (rewriteItem != null)
{
return(menu.GetMatchingSiteMapMenuItem(rewriteItem.Name));
}
return(null);
}
/// <summary>
/// Gets an ISiteMapMenuItem from the ISiteMapMenuItem collection by name
/// </summary>
/// <param name="name">The name</param>
/// <returns></returns>
public ISiteMapMenu GetSiteMapMenu(string name)
{
ISiteMapMenu item = null;
IEnumerator enumerator = this.SiteMapMenuElementCollection.GetEnumerator();
while (enumerator.MoveNext())
{
if (((ISiteMapMenu)enumerator.Current).Name.Equals(name))
{
item = ((ISiteMapMenu)enumerator.Current);
break;
}
}
return(item);
}
