如何通過嵌套的IEnumerable對象對IEnumerable對象進行排序？

Question

可能重複：
Sort a field of each object in a list with LINQ

我有這個集合：

IEnumerable<sample> sam = new List<sample>() 
    { 
     new sample{ id = 1, name = "sample 1", list = new List<int>{5,6,1}}, 
     new sample{ id = 2, name = "sample 1", list = new List<int>{2,9}}, 
     new sample{ id = 3, name = "sample 1", list = new List<int>{8,3,7}}, 
     new sample{ id = 4, name = "sample 1", list = new List<int>{8,4,3}}, 
     new sample{ id = 5, name = "sample 1", list = new List<int>{5,1,7}}, 
     new sample{ id = 6, name = "sample 1", list = new List<int>{6,9,7}} 
    }; 

我怎樣才能使輸出爲解決這使用LINQ：

 new sample{ id = 2, name = "sample 1", list = new List<int>{2,9}}, 
    new sample{ id = 5, name = "sample 1", list = new List<int>{5,1,7}}, 
    new sample{ id = 1, name = "sample 1", list = new List<int>{5,6,1}}, 
    new sample{ id = 6, name = "sample 1", list = new List<int>{6,9,7}} 
    new sample{ id = 3, name = "sample 1", list = new List<int>{8,3,7}}, 
    new sample{ id = 4, name = "sample 1", list = new List<int>{8,4,3}}, 

這是按順序排列。

感謝

Answer 1

這裏的LINQ由list財產的第一項命令sam（我推測這就是你以後，對不對？）：

IEnumerable<sample> orderedSam = sam.OrderBy(item => item.list.FirstOrDefault());