3所列出

Question

排序嵌套屬性如何將一個在地方排序嵌套列表：

JobCollection

名單

喬布斯（由字符串贊助商排序）項目

列表（排序INT訂單列表）

數據模型的類結構：

public class JobCollection 
{ 
     public string Collection { get; set; } 

     public virtual TrulyObservableCollection<Job> Jobs { get; private set; } = new TrulyObservableCollection<Job>(); 
} 

public class Job 
{ 
     public virtual JobCollection JobCollection { get; set; } 

     public string JobGUID { get; set; } = Guid.NewGuid().ToString(); 

     public string Sponsor { get; set; } 

     public virtual TrulyObservableCollection<Item> Items { get; private set; } = new TrulyObservableCollection<Item>(); 

} 
public class Item 
{ 
     public virtual Job Job { get; set; } 

     [Key] 
     public string ItemGUID { get; set; } = Guid.NewGuid().ToString(); 

     public int Order { get; set; } 
} 

我已經試過各種方法，但不是它的任何地方獲得，例如：

EntireCollection.SelectMany(o => o.Jobs).ToList().ForEach(d => d.Sponsor = d.Items.OrderBy(e => e.Order).ToList()); 

elem => elem.Jobs.OrderBy(
job => job.Items.OrderBy(
    item => item.Order 
) 

Argh! 

Answer 1

做到這一點最簡單的方法，但不建議。

jobCollection.ForEach((jobCol) => 
    { 
     jobCol.Jobs.ForEach((job) => 
     { 
      job.Items.OrderBy(item => item.Order); 
     }); 
     jobCol.Jobs.OrderBy((job) => job.Sponsor); 
    });