Sorting strings in C#

Question

I have a delimited string that I need sorted. First I need to check if 'Francais' is in the string, if so, it goes first, then 'Anglais' is next, if it exists. After that, everything else is alphabetical. Can anyone help me? Here's what I have so far, without the sorting

private string SortFrench(string langs)
    {
       string _frenchLangs = String.Empty;
       string retval = String.Empty;

        _frenchLangs = string.Join(" ; ",langs.Split(';').Select(s => s.Trim()).ToArray());

        if (_frenchLangs.Contains("Francais"))
            retval += "Francais";

        if (_frenchLangs.Contains("Anglais"))
        {
            if (retval.Length > 0)
                retval += " ; ";

            retval += "Anglais";
        }

        //sort the rest

        return retval;
    }

Answer 1

Someone liked my comment, so figured I'd go ahead and convert that into your code:

private string SortFrench(string langs)
{
    var sorted          = langs.Split(';')
        .Select(s => s.Trim())
        .OrderByDescending( s => s == "Francais" )
        .ThenByDescending( s => s == "Anglais" )
        .ThenBy ( s => s )
        .ToArray();

    return string.Join(" ; ",sorted);
}

My syntax may be off slightly as I've been in the Unix world for awhile now and haven't used much LINQ lately, but hope it helps.