C#中Dictionary<TKey,TValue>排序方式的实现-C#/.NET问题

这篇文章主要介绍了C#中DictionaryTKey,TValue排序方式的实现，文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值，需要的朋友们下面随着小编来一起学习学习吧

自定义类：


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CSharp中Dictionary排序方式
{
  [Serializable]
  public class CustmonizedClass
  {
    public string stuＮame { get; set; }

    public int stuAge { get; set; }

    public string stuSex { get; set; }

    public double stuScore { get; set; }
    
  }
}

Dictionary<int,自定义类>

按照Dictionary的Key值升序排序(OrderBy)、降序排序(OrderByDescending)：


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CSharp中Dictionary排序方式
{
   public class Program
  {
    static void Main(string[] args)
    {
      CustmonizedClass cn1 = new CustmonizedClass();
      cn1.stuＮame = "张三";
      cn1.stuAge = 18;
      cn1.stuSex = "男";
      cn1.stuScore = 89.5;

      CustmonizedClass cn2 = new CustmonizedClass();
      cn2.stuＮame = "李四";
      cn2.stuAge = 19;
      cn2.stuSex = "男";
      cn2.stuScore = 88.5;


      CustmonizedClass cn3 = new CustmonizedClass();
      cn3.stuＮame = "王五";
      cn3.stuAge = 17;
      cn3.stuSex = "女";
      cn3.stuScore = 89.5;

      Dictionary<int, CustmonizedClass> dic1 = new Dictionary<int, CustmonizedClass>();
      dic1.Add(3, cn1);
      dic1.Add(1, cn2);
      dic1.Add(2, cn3);
      //上面dic1.Add()故意不按照顺序

      Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderBy(p=>p.Key).ToDictionary(p => p.Key, o => o.Value);
      

      foreach (KeyValuePair<int, CustmonizedClass> item in dic1_SortedByKey) 
      {
        Console.WriteLine("Key:{0} ; Value: name:{1}, age:{2}, sex:{3}, score:{4} ",
          item.Key,item.Value.stuＮame,item.Value.stuAge,item.Value.stuSex,item.Value.stuScore);
      }
      Console.ReadLine();            
    }
  }
}


Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderBy(p=>p.Key).ToDictionary(p => p.Key, o => o.Value);

结果截图：

降序排序：


Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderByDescending(p => p.Key).ToDictionary(p => p.Key, o => o.Value);

结果截图：

按照Dictionary的Value值的某个属性升序排序(OrderBy)、降序排序(OrderByDescending)：


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CSharp中Dictionary排序方式
{
   public class Program
  {
    static void Main(string[] args)
    {
      CustmonizedClass cn1 = new CustmonizedClass();
      cn1.stuＮame = "张三";
      cn1.stuAge = 18;
      cn1.stuSex = "男";
      cn1.stuScore = 89.5;

      CustmonizedClass cn2 = new CustmonizedClass();
      cn2.stuＮame = "李四";
      cn2.stuAge = 19;
      cn2.stuSex = "男";
      cn2.stuScore = 88.5;


      CustmonizedClass cn3 = new CustmonizedClass();
      cn3.stuＮame = "王五";
      cn3.stuAge = 17;
      cn3.stuSex = "女";
      cn3.stuScore = 89.5;

      Dictionary<int, CustmonizedClass> dic1 = new Dictionary<int, CustmonizedClass>();
      dic1.Add(3, cn1);
      dic1.Add(1, cn2);
      dic1.Add(2, cn3);
      //上面dic1.Add()故意不按照顺序
      //Key升序
      //Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderBy(p=>p.Key).ToDictionary(p => p.Key, o => o.Value);
      //Key降序
      //Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderByDescending(p => p.Key).ToDictionary(p => p.Key, o => o.Value);
      //Value中stuAge属性
      Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderBy(o => o.Value.stuAge).ToDictionary(p => p.Key, o => o.Value);

      foreach (KeyValuePair<int, CustmonizedClass> item in dic1_SortedByKey) 
      {
        Console.WriteLine("Key:{0} ; Value: name:{1}, age:{2}, sex:{3}, score:{4} ",
          item.Key,item.Value.stuＮame,item.Value.stuAge,item.Value.stuSex,item.Value.stuScore);
      }
      Console.ReadLine();            
    }
  }
}

关键修改这句：


Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderBy(o => o.Value.stuAge).ToDictionary(p=>p.Key,o=>o.Value);

结果截图：

混合排序：类似EXCEL中先按第一列升序、再按第3列的升序……


using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace CSharp中Dictionary排序方式
{
   public class Program
  {
    static void Main(string[] args)
    {
      CustmonizedClass cn1 = new CustmonizedClass();
      cn1.stuＮame = "张三";
      cn1.stuAge = 18;
      cn1.stuSex = "男";
      cn1.stuScore = 89.5;

      CustmonizedClass cn2 = new CustmonizedClass();
      cn2.stuＮame = "李四";
      cn2.stuAge = 19;
      cn2.stuSex = "男";
      cn2.stuScore = 88.5;


      CustmonizedClass cn3 = new CustmonizedClass();
      cn3.stuＮame = "王五";
      cn3.stuAge = 17;
      cn3.stuSex = "女";
      cn3.stuScore = 89.5;

      Dictionary<int, CustmonizedClass> dic1 = new Dictionary<int, CustmonizedClass>();
      dic1.Add(3, cn1);
      dic1.Add(1, cn2);
      dic1.Add(2, cn3);
      //上面dic1.Add()故意不按照顺序
      //Key升序
      //Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderBy(p=>p.Key).ToDictionary(p => p.Key, o => o.Value);
      //Key降序
      //Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderByDescending(p => p.Key).ToDictionary(p => p.Key, o => o.Value);
      //Value中stuAge属性
      //Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderBy(o => o.Value.stuAge).ToDictionary(p => p.Key, o => o.Value);
      //混合排序 等同于下列的linq语句
      //Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderBy(o => o.Value.stuScore).ThenByDescending(o=>o.Value.stuAge).ToDictionary(p=>p.Key,o=>o.Value);

      //linq语句
      var dic1_SortedByKey = from n in dic1

             orderby n.Value.stuScore, n.Value.stuAge descending

             select n;

      foreach (KeyValuePair<int, CustmonizedClass> item in dic1_SortedByKey) 
      {
        Console.WriteLine("Key:{0} ; Value: name:{1}, age:{2}, sex:{3}, score:{4} ",
          item.Key,item.Value.stuＮame,item.Value.stuAge,item.Value.stuSex,item.Value.stuScore);
      }
      Console.ReadLine();            
    }
  }
}


Dictionary<int, CustmonizedClass> dic1_SortedByKey = dic1.OrderBy(o => o.Value.stuScore).ThenByDescending(o=>o.Value.stuAge).ToDictionary(p=>p.Key,o=>o.Value);

等同于linq语句：


var dic1_SortedByKey = from n in dic1

orderby n.Value.stuScore, n.Value.stuAge descending

select n;

结果截图：

到此这篇关于C#中Dictionary<TKey,TValue>排序方式的实现的文章就介绍到这了,更多相关C# Dictionary<TKey,TValue>排序内容请搜索得得之家以前的文章希望大家以后多多支持得得之家！

自定义类：

Dictionary<int,自定义类>

降序排序：

按照Dictionary的Value值的某个属性 升序排序(OrderBy)、降序排序(OrderByDescending)：

混合排序：类似EXCEL中先按第一列升序、再按第3列的升序……

基础教程推荐

按照Dictionary的Value值的某个属性升序排序(OrderBy)、降序排序(OrderByDescending)：