在 C# Windows 窗体中对字典进行排序[重复]

Posted 2023-03-31

【中文标题】在 C# Windows 窗体中对字典进行排序[重复]

【英文标题】：Sorting a dictionary in a C# Windows Form [duplicate]

【发布时间】：2015-12-18 05:08:54

【问题描述】：

我在 c# 中有一个 Windows 窗体应用程序，我正在显示字典。

我要做的是对字典进行排序。

在字典中有文件路径以及字典中有多少次的值。我想对列表进行排序以使出现最多的条目出现在顶部，而出现在底部的条目最少

我不知道从哪里开始。

这是我目前的代码：

    namespace Xml_reader

    public partial class Form1 : Form
    
        Dictionary<string, int> _dictionary = new Dictionary<string, int>();
        public Form1()
        
            InitializeComponent();
        

        private void getFile_Click(object sender, EventArgs e)
        
            FileStream fileStream = null;
            fileStream = new FileStream(@"C:\myProject\svn.xml", FileMode.Open, FileAccess.Read, FileShare.Read); 


            XmlSerializer xmlSerializer = new XmlSerializer(typeof(log) );
            log logInstance;
            lock (xmlSerializer)
            
                logInstance = (log)xmlSerializer.Deserialize(fileStream);
            
            _dictionary = CreateDictionary(logInstance);
        

        private Dictionary<string, int> CreateDictionary(log logInstance)
        
            Dictionary<string, int> dictionary = new Dictionary<string, int>();
            int commonStringNumber = FindCommonString(logInstance);
            for (int entryIdex = 0; entryIdex < logInstance.logentry.Count(); entryIdex++)
            

                logLogentry entry = logInstance.logentry[entryIdex];

                for (int pathIdex = 0; pathIdex < entry.paths.Count(); pathIdex++)
                
                    logLogentryPath path = entry.paths[pathIdex];
                    string filePath = path.Value;


                    if (filePath.Length >= commonStringNumber)
                    
                        string cutPath = filePath.Substring(commonStringNumber);
                        if (dictionary.ContainsKey(cutPath))
                        
                            dictionary[cutPath]++;
                        
                        else
                        
                            dictionary.Add(cutPath, 1);
                        
                    
                
            
            return dictionary;
        

        private static int FindCommonString(log logInstance)
        
            string fCompare = logInstance.logentry[0].paths[0].Value;
            for (int entryIdex = 0; entryIdex < logInstance.logentry.Count(); entryIdex++)
            
                logLogentry entry = logInstance.logentry[entryIdex];

                for (int pathIdex = 0; pathIdex < entry.paths.Count(); pathIdex++)
                
                    logLogentryPath path = entry.paths[pathIdex];
                    string fcheck = path.Value;
                    fCompare = similarString(fCompare, fcheck);


                

            
            return fCompare.Length;
        

        private static string similarString(string fCompare, string fcheck)
        
            int length = Math.Min(fCompare.Length, fcheck.Length);
            string common = String.Empty;
            for (int i = 0; i < length; i++)
            

                if (fCompare[i] == fcheck[i])
                
                    common += fCompare[i];
                
                else
                
                    break;
                
            
            return common;
        

        private void converToText(Dictionary<string, int> dictionaryList)
        
            List<KeyValuePair<string, int>> changesWithValues = dictionaryList.ToList();
            display(changesWithValues);
        

        private void display(List<KeyValuePair<string, int>> changesWithValues)
        
            textBox1.Text = String.Join(Environment.NewLine, changesWithValues.Where(kvp => kvp.Key != "").Select(kvp => string.Format("0 = 1", kvp.Key, kvp.Value)));
        

        private void Show_Click(object sender, System.EventArgs e)
        
            converToText(_dictionary);
        

【参考方案1】：

你可以试试这个：

List<KeyValuePair<string, int>> myList = _dictionary.ToList();

myList.Sort((firstPair,nextPair) =>
    
        return firstPair.Value.CompareTo(nextPair.Value);
    
);

---

让我们做一些测试。使用此代码：

_dictionary.Add("Toto", 33);
_dictionary.Add("Tutu", 22);
_dictionary.Add("Pouet", 2);
_dictionary.Add("Pouetr", 57);


List<KeyValuePair<string, int>> myList = _dictionary.ToList();

myList.Sort((firstPair, nextPair) => firstPair.Value.CompareTo(nextPair.Value));
myList.Reverse();

foreach (KeyValuePair<string, int> keyValuePair in myList)

    Console.Out.WriteLine(keyValuePair.Value + " " + keyValuePair.Key);

我明白了：

57 Pouetr
33 Toto
22 Tutu
2 Pouet

所以，从技术上讲，它正在工作......

【讨论】：

这似乎只显示只有一个条目的条目我有这样的代码： private void display(List> changesWithValues) List> myList = changesWithValues.ToList(); myList.Sort((firstPair, nextPair) => return firstPair.Value.CompareTo(nextPair.Value); ); textBox1.Text = String.Join(Environment.NewLine, myList.Where(kvp => kvp.Key != "").Select(kvp => string.Format("0 = 1", kvp.Key , kvp.值)));

@FraserMunro 请在您想添加代码时编辑您的问题

有了这个答案，你给了@Thomas，显示的只是一个值

@FraserMunro 它适用于我的...也许你应该添加一个字典转储看看有什么问题？