c# - 无法使用 System.Linq.Dynamic 进行排序

Question

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Linq.Dynamic;

namespace LinqTest
{
    class Program
    {
        static void Main(string[] args)
        {
            List<Sample> sampleData = new List<Sample>() 
            { 
                new Sample{ ID=1, Name="V", Designation="Executive", JoiningDate=DateTime.Now.Date, Salary=45000M },
                new Sample{ ID=2, Name="F", Designation="Executive", JoiningDate=DateTime.Now.Date, Salary=400M },
                new Sample{ ID=3, Name="A", Designation="Boss", JoiningDate=DateTime.Now.Date, Salary=5000M },
                new Sample{ ID=1, Name="D", Designation="Executive", JoiningDate=DateTime.Now.Date, Salary=2500M },
                new Sample{ ID=1, Name="V", Designation="Executive", JoiningDate=DateTime.Now.Date, Salary=45000M }
            };

            IQueryable<Sample> sas = sampleData.AsQueryable<Sample>();
            sas.OrderBy("Name");
        }
    }
}

正如您在上面看到的，我正在尝试使用 System.Linq.Dynamic 库的扩展方法对其中一列进行简单排序。但它没有被排序。当我将鼠标悬停在 sas 上时，我会看到按原始顺序排列的项目。谁能告诉我为什么？

Answer 1

原始 sas 变量保持无序。您需要保存OrderBy 的结果:

var myOrderedSas = sas.OrderBy("Name");