First() on a Dictionary?

[peterfoldi]

Hi Scott,

I am sure time proved that this code works as expected but it looks strange for me:

installedVersions = installedVersions.OrderByDescending(p => p.Value.Major)
                .ThenByDescending(p => p.Value.Minor)
                .ThenByDescending(p => p.Value.Profile)
                .ThenByDescending(p => p.Value.ServicePack ?? 0)
                .ToDictionary(p => p.Key, p => p.Value);

if (installedVersions.Any())
{
    return installedVersions.First().Value;
}

Calling First() on a Dictionary shouldn't be a deterministic way to get the largest element from a Dictionary, or do I miss something here?

[msarchet]

The dictionary is created and ordered from a dictionary that is built from a string, version pair.