c# - c# Web サービスのソート結果

Question

この選択を vehicle.DateRegistered でソートしようとしていますが、本当に混乱していて、何も機能していないようです。どんな助けでも大歓迎です。

 var lookupValues = vehicles
            .Select(vehicle =>
                new LookupValue()
                {
                    Id = vehicle.Id,
                    Description = vehicle.RegistrationNumber + " " +vehicle.DateRegistered.ToString("dd/mm/yyyy"),
                    Data = Json.GetString(vehicle),
                    Active = true
                });
        return lookupValues;

ありがとうオースティン

Answer 1

OrderBy拡張メソッドを使用します。

var lookupValues = vehicles.OrderBy(v => v.DateRegistered).Select(.....);

Answer 2

var lookupValues = vehicles
        .OrderBy(vehicle => vehicle.DateRegistered)
        .Select(vehicle =>
            new LookupValue()
            {
                Id = vehicle.Id,
                Description = vehicle.RegistrationNumber + " " +vehicle.DateRegistered.ToString("dd/mm/yyyy"),
                Data = Json.GetString(vehicle),
                Active = true
            });
    return lookupValues;

Answer 3

You can try with this code - based on OrderBy Linq operator

lookupValues.OrderBy(a=> a.DateRegistered);

Nota : Add DateRegistered in your selector

Or also you can use this

var lookupValues = vehicles

                .OrderBy(a => a.DateRegistered) 
                .Select(vehicle =>
                new LookupValue()
                {
                    Id = vehicle.Id,
                    Description = vehicle.RegistrationNumber + " " +vehicle.DateRegistered.ToString("dd/mm/yyyy"),
                    Data = Json.GetString(vehicle),
                    Active = true
                });
        return lookupValues;

Nota : you define direction of order : descending or ascending