A generic class with two generic parameters

   
 

using System;
using System.Collections.Generic;
using System.Text;



class MyCache<K, V> {
    private static Dictionary<K, V> _objectCache;

    public MyCache() {
        MyCache<K, V>._objectCache = new Dictionary<K, V>();
    }

    private V FindValueInDB(K key) {
        return default(V);
    }

    public V LookupValue(K key) {
        V retVal;
        if (_objectCache.ContainsKey(key) == true) {
            _objectCache.TryGetValue(key, out retVal);
        } else {
            retVal = FindValueInDB(key);
        }
        return retVal;
    }
}
class MyApp {
    public static void main(String[] args) {
        MyCache<string, string> cache1 = new MyCache<string, string>();
        string val1 = cache1.LookupValue("key1");

        MyCache<string, int> cache2 = new MyCache<string, int>();
        int val2 = cache2.LookupValue("key1");
    }
}