排序列表<列表<t >>

Question

我需要对一个List<List<T>>说#myList进行排序。 T具有属性QuestionName和Response。

我需要根据对特定问题的回答对#mylist进行排序。这是我的代码：

public class T
{
    public string QuestionName {get; set;}
    public string Response {get; set;}
}

List<List<T>> myList = new List<List<T>>();

List<T> tList = new List<T>();    
tList.add({QuestionName = "FirstName", Response = "BBB"});
tList.add({QuestionName = "LastName", Response = "BBBLastName"});
myList.add(tList);

tList = new List<T>();
tList.add({QuestionName = "FirstName", Response = "AAA"});
tList.add({QuestionName = "LastName", Response = "AAACLastName"});
myList.add(tList);

tList = new List<T>();
tList.add({QuestionName = "FirstName", Response = "CCC"});
tList.add({QuestionName = "LastName", Response = "CCCLastName"});
myList.add(tList);

这基本上对应于一个表-其中每个T是一个单元格，List<T>是一行，List<List<T>>是表。

我需要根据对FirstName问题的回答对表（List<T>）的行进行排序。

我搜索了网络，但没有找到关于排序List<List<T>>的任何帖子。甚至有可能吗？

Answer 1

以下是您期望的工作版本：

class T
{
    public string QuestionName { get; set;}

    public string Response { get; set;}
 }


void Main()
{
    List<List<T>> myList = new List<List<T>>();

    List<T> tList = new List<T>();
    tList.Add(new T { QuestionName = "FirstName", Response = "BBB"});
    tList.Add(new T{ QuestionName = "LastName", Response = "BBBLastName"});
    myList.Add(tList.OrderBy(x => x.Response).ToList());

    List<T> tList1 = new List<T>();
    tList1.Add(new T{ QuestionName = "FirstName", Response = "AAA"});
    tList1.Add(new T{ QuestionName = "LastName", Response = "AAACLastName"});
    myList.Add(tList1.OrderBy(x => x.Response).ToList());

    List<T> tList2 = new List<T>();
    tList2.Add(new T{ QuestionName = "FirstName", Response = "CCC"});
    tList2.Add(new T{ QuestionName = "LastName", Response = "CCCLastName"});
    myList.Add(tList2.OrderBy(x => x.Response).ToList());

    myList =
    myList.OrderBy(list => list.First().Response).ToList();
}

---

工作方式：

1. 每个Row或子列表都使用Response属性进行排序和排列
2. 对于List<List<T>，我们使用list.First().Response进行订购。
3. 打印是使用LinqPad - Dump API创建的，尽管您可以使用其他一些方便的API

以下是最终结果：

Answer 2

检查此答案-工作fiddle

using System;
using System.Collections.Generic;
using System.Linq;

public class Program
{
    public  void Main()
    {
        List<List<ABC>> myList = new List<List<ABC>>();

        List<ABC> tList = new List<ABC>();    
        tList.Add(new ABC(){QuestionName = "EFirstName", Response = "BBB"});
        tList.Add(new ABC(){QuestionName = "BLastName", Response = "BBBLastName"});
        myList.Add(tList);

        List<ABC> bList = new List<ABC>();    
        tList.Add(new ABC(){QuestionName = "zFirstName", Response = "BBB"});
        tList.Add(new ABC(){QuestionName = "QLastName", Response = "BBBLastName"});
        myList.Add(bList);

        Console.WriteLine("Normal List");

        foreach(var item in myList){
            foreach(var innerItem in item){
                  Console.WriteLine(innerItem.QuestionName + " | "+innerItem.Response);
            }
        }

        Console.WriteLine("++++++++++++++++++++++++");
        // Sort
        var sortedList = myList.Select(x=>x.OrderBy(y=> y.QuestionName)).ToList();


        Console.WriteLine("Sorted List");
        foreach(var item in sortedList){
            foreach(var innerItem in item){
                 Console.WriteLine(innerItem.QuestionName + " | "+innerItem.Response);
            }
        }

    }
}

Answer 3

鉴于该示例尚未接近编译，因此我重新整理了一些内容，并使用了“词典列表”。

List<Dictionary<string,string>> questions = new List<Dictionary<string,string>>();
questions.Add(new Dictionary<string,string>() { 
    { "FirstName", "BBB" },
    { "LastName", "BBBLastName" }
});
questions.Add(new Dictionary<string,string>() { 
    { "FirstName", "AAA" },
    { "LastName", "AAACLastName" }
});
questions.Add(new Dictionary<string,string>() { 
    { "FirstName", "CCC" },
    { "LastName", "CCCLastName" }
});

questions.Sort((a,b) => {
    List<string> tmp = new List<string>() { a["FirstName"], b["FirstName"] };
    tmp.Sort();
    return !a["FirstName"].Equals(tmp[0]) ? 1 : -1;
});

questions.ForEach(x => {
    x.Keys.ToList().ForEach(key => Console.WriteLine("{0}: {1}", key, x[key]));
});