Q:

Monotuch : Array RootElement

How to can i define array with RootElement Type?
My pseudo code is:  
RootElement LanguageElement = array();

LanguageElement[1] = some codes;
LanguageElement[2] = some another codes;

A:

This is no different than any other object array in C#
RootElement[] root = new RootElement[10];

root [0] = new RootElement ("caption 1");
...
root [9] = new RootElement ("caption 10");

