score:1

Accepted answer
typesymbolssettingsdata = symbolsettings
    .groupby(p => p.symboltype)
    .todictionary(
        p => p.key,
        p => p.select(x => new symboldescr
        {
            symbol = x.symbolname,
            classification = (int)x.symbolclassification
        })
        .tolist());

Related Query

More Query from same tag