How to cache method results in .Net

Using webmethods开发者_如何学JAVA, caching the results is pretty straight forward using "CacheDuration" attribute. Is there a similar "easy" way to cache non-webmethod outputs (or static methods) based on the parameters?

I would appreciate any help. Thanks in advance!

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The simplest way to implement a cache is to use a Dictionary or similar data structure within your class to hold results in memory for successive calls.

public class CachedDatastore
{
    private Dictionary<string, object> cache = new Dictionary<string, object>();

    public void FindById(string id)
    {
        if (!cache.ContainsKey(id))
        {
            var data = GetDataFromDatabase(id);
            cache[id] = data;
        }

        return cache[id];
    }
}

This is just a basic example if you want to try to implement something on your own. It does not support cache "eviction" or re-loading data at any time. If you need more advanced features, I'd recommend looking around in the .NET framework for cache classes or other 3rd party libraries.

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This question looks similar to: Is there anyway to cache function/method in C#

The right term for what you want is memoization. Wikipedia gives more details on this subjects. Unfortunately there is no reference to a C# library supporting it. There are various ways to implement it yourself. But since I am not experienced in C# I can not give any more detail. Some techniques that could be used: AOP, Annotations, Proxies.