[Solved] C# Lookup ptimisation suggestion are welcome

by


Neater, more linq:

        var data = GetData();

        foreach (var v0 in data)
        {
            if (v0.Key.Item3 != string.Empty) continue;

            //Get all related data 
            var tr_line = data[v0.Key];
            sb.AppendLine(tr_line.First());

            var hhLines = from v1 in data
                          where v1.Key.Item2 == string.Empty &&
                                v1.Key.Item1 == v0.Key.Item1
                          select data[v1.Key];

            foreach (var hh_line in hhLines)
            {
                sb.AppendLine(hh_line.First());

                var grouping = v0;
                var enumerable = from v2 in data
                                 where v2.Key.Item1 == grouping.Key.Item1 &&
                                       v2.Key.Item2 != string.Empty &&
                                       v2.Key.Item3 != string.Empty
                                 select data[v2.Key].OrderByDescending(r => r)
                                 into hl_sl_lines from v3 in hl_sl_lines select v3;

                foreach (var v3 in enumerable)
                {
                    sb.AppendLine(v3);
                }
            }
        }

2

solved C# Lookup ptimisation suggestion are welcome