>Well, look at what I have found:
>
>http://msdn.microsoft.com/en-us/library/ff647802.aspx
>
>...especially in the Boxing section:
>
>"Excessive boxing often occurs where you use collections that store System.Object types. Consider using an array or a custom-typed collection class instead."

With a Dictionary< TKey, TValue> you don't have to store System.Object types. Hence no boxing at all


>So, the usage of an array seems to be recommanded. This is like the issue with the StringBuilder that I had to change recently with a string to avoid a heap.
>
>Anyone can provide feedback on this and if this makes sense?