c# - c# Web服务排序结果

Question

我正在尝试按 vehicle.DateRegistered 对这个选择进行排序，但这真的让我感到困惑，而且我似乎没有做任何事情。任何帮助将非常感激。

 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;

谢谢奥斯汀

Answer 1

使用OrderBy扩展方法：

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

Answer 2

您可以尝试使用此代码 - 基于OrderBy Linq运算符

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

注意：在您的选择器中添加 DateRegistered

或者你也可以使用这个

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;

注意：您定义顺序方向：降序或升序

Answer 3

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;