public MetaDataSorter()
{
SortInterwikis = true;
if (!LoadInterWikiFromCache())
{
LoadInterWikiFromNetwork();
SaveInterWikiToCache();
}
if (InterwikiLocalAlpha == null)
throw new NullReferenceException("InterwikiLocalAlpha is null");
//create a comparer
InterWikiOrder = InterWikiOrderEnum.LocalLanguageAlpha;
}