A way to load XML files once .net c#

Actually i'm using xml files for my web pages configuration , xml files contain everything and all the controls/content is loadded through theese XML files and it works , theese config files can change on the fly , and web pages just change their layout/content no need to recompile/redeploy , and i must keep this way of doing things.

The problem is that i'm loading these files like 20 times per page and when i want to access them from my classes/ashx files , i just keep opening them. Is there a way to load xml Files as they were globalresources , and access content from my开发者_运维知识库 classes/cs/ashx files?

the problem with global resources is that if add them as emmbded resources , i can't change them without recompling them refering to this post . Correct me if i'm wrong.

Thanks.

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You can store your files in Cache, Session, Application or ViewState objects.

I think most preferably for is Cache object, because you can add some dependencies based on files, and your objects will be automatically updated:

Cache.Insert("CacheItem4", "Cached Item 4", new System.Web.Caching.CacheDependency(Server.MapPath("XMLFile.xml")));

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In situations like this, I use a helper:

public class CacheUtil
{
    private static readonly object locker=new object();
    public static T GetCachedItem<T>(string cacheKey,
                                     Func<T> valueCreateFunc, 
                                     TimeSpan duration)
    {
        var expirationTime = DateTime.UtcNow + duration;
        var cachedItem = HttpRuntime.Cache[cacheKey];
        if (cachedItem == null)
        {
            lock(locker)
            {
                cachedItem = HttpRuntime.Cache[cacheKey];
                if (cachedItem == null)
                {
                    cachedItem = valueCreateFunc();
                    HttpRuntime.Cache.Add(cacheKey,
                                          cachedItem,
                                          null,
                                          expirationTime,
                                          Cache.NoSlidingExpiration,
                                          CacheItemPriority.High,
                                          null);
                }
            }

        }
        return (T) cachedItem;
    }
}

which I would use something like this:

CacheUtil.GetCachedItem(
    "someUniqueKey",
    ()=>{ //fetch resource from disk
          return value;},
    TimeSpan.FromDays(1)
)

The supplied delegate will only be invoked once per day. If the item is already in cache, the delegate will not be invoked again.

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You need to create wrapper for accessing your files which will have properties like:

public class MyMarkupProvider
{
    public XDocument HomePageLayout {get;set;}
}

Also it would be create to cache these files. Take a look on using cache and file CacheDependency: Cache files using ASP.NET Cache Dependency