这篇文章主要讲解了“C#对Dictionary内容的通用操作是什么”，文中的讲解内容简单清晰，易于学习与理解，下面请大家跟着小编的思路慢慢深入，一起来研究和学习“C#对Dictionary内容的通用操作是什么”吧！
一、实现效果
1.1实现的功能
①添加信息到字典中；
②根据键获取值；
③根据值获取键；
④修改指定键的值；
⑤修改指定值为相同信息；
⑥根据键移除信息；
⑦根据值移除信息；
1.2实现的功能效果图
二、实现核心
using System;using System.Collections.Generic;using System.Linq;using System.Text; namespace Utils{ public class DictionaryHelper { /// <summary> /// 添加信息到字典中 /// </summary> /// <typeparam name="TKey">键类型</typeparam> /// <typeparam name="TValue">值类型</typeparam> /// <param name="dic">字典</param> /// <param name="key">需添加的键</param> /// <param name="value">需添加的值</param> public static void AddInfoToDic<TKey, TValue>(Dictionary<TKey, TValue> dic, TKey key, TValue value) { if (dic == null) { dic = new Dictionary<TKey, TValue>(); } if (dic.ContainsKey(key)) { dic[key] = value; } else { dic.Add(key, value); } } /// <summary> /// 根据键获取值 /// </summary> /// <typeparam name="TKey">键类型</typeparam> /// <typeparam name="TValue">值类型</typeparam> /// <param name="dic">字典</param> /// <param name="key">键</param> /// <returns>返回键对应的值</returns> public static TValue GetValueOfKey<TKey, TValue>(Dictionary<TKey, TValue> dic, TKey key) { TValue tmpValue = default(TValue); if (dic != null && dic.Count > 0) { if (dic.ContainsKey(key)) { tmpValue = dic[key]; } } return tmpValue; } /// <summary> /// 根据值获取键 /// </summary> /// <typeparam name="TKey">键类型</typeparam> /// <typeparam name="TValue">值类型</typeparam> /// <param name="dic">字典</param> /// <param name="value">值</param> /// <returns>返回值对应的所有键</returns> public static List<TKey> GetKeyOfValue<TKey, TValue>(Dictionary<TKey, TValue> dic, TValue value) { List<TKey> keyList = new List<TKey>(); foreach (KeyValuePair<TKey, TValue> kv in dic) { if (kv.Value.Equals(value)) { TKey tmpKey = kv.Key; keyList.Add(tmpKey); } } return keyList; } /// <summary> /// 修改指定键的值 /// </summary> /// <typeparam name="TKey">键类型</typeparam> /// <typeparam name="TValue">值类型</typeparam> /// <param name="dic">字典</param> /// <param name="needModifyKey">需要修改的键</param> /// <param name="replaceValue">需要替换的值</param> /// <returns>返回修改结果（true:表示成功）</returns> public static bool ModifyInfoOfKey<TKey, TValue>(Dictionary<TKey, TValue> dic, TKey needModifyKey, TValue replaceValue) { if (dic == null || dic.Count < 1) return false; if (dic.ContainsKey(needModifyKey)) { dic[needModifyKey] = replaceValue; return true; } else { return false; } } /// <summary> /// 修改指定值为相同信息 /// </summary> /// <typeparam name="TKey">键类型</typeparam> /// <typeparam name="TValue">值类型</typeparam> /// <param name="dic">字典</param> /// <param name="needModifyValue">需要修改的值</param> /// <param name="replaceValue">需要替换的值</param> public static void ModifyInfoOfValue<TKey, TValue>(Dictionary<TKey, TValue> dic, TValue needModifyValue, TValue replaceValue) { if (dic == null || dic.Count < 1) return; for (int i = 0; i < dic.Count;) { TValue tmpValue = dic.ElementAt(i).Value; if (tmpValue.Equals(needModifyValue)) { TKey tmpKey = dic.ElementAt(i).Key; dic[tmpKey] = replaceValue; i = 0; } else { i++; } } } /// <summary> /// 根据键移除信息 /// </summary> /// <typeparam name="TKey">键类型</typeparam> /// <typeparam name="TValue">值类型</typeparam> /// <param name="dic">字典</param> /// <param name="needDeleteKey">需要删除的键</param> /// <returns>返回移除结果（true:表示成功）</returns> public static bool RemoveInfoOfKey<TKey, TValue>(Dictionary<TKey, TValue> dic,TKey needDeleteKey) { if (dic.ContainsKey(needDeleteKey)) { dic.Remove(needDeleteKey); return true; } else { return false; } } /// <summary> /// 根据值移除信息 /// </summary> /// <typeparam name="TKey">键类型</typeparam> /// <typeparam name="TValue">值类型</typeparam> /// <param name="dic">字典</param> /// <param name="needDeleteValue">需要删除的值</param> /// <returns>返回结果（true：表示成功）</returns> public static bool RemoveInfoOfValue<TKey, TValue>(Dictionary<TKey, TValue> dic, TValue needDeleteValue) { if (dic == null || dic.Count < 1) return false; int initCount = dic.Count; for (int i = 0; i < dic.Count;) { TValue tmpValue = dic.ElementAt(i).Value; if (tmpValue.Equals(needDeleteValue)) { TKey tmpKey = dic.ElementAt(i).Key; dic.Remove(tmpKey); i = 0; } else { i++; } } if (initCount > dic.Count) { return true; } else { return false; } } }//Class_end }三、使用方法
3.1引用命名空间
using Utils;3.2使用示例
using System;using System.Collections.Generic;using Utils; namespace Test_Dictionary{ class Program { static void Main(string[] args) { Console.WriteLine("Hello World!"); //获取到字典信息 Dictionary<string, string> dic = GetDictionary(); Console.WriteLine($"1-开始获取到的字典的所有信息如下："); ShowInfoOfDic(dic); //根据键获取到对应的值 string queryKey = "L1"; Console.WriteLine($"当前查询的键是：{queryKey}"); string tmpValue = DictionaryHelper.GetValueOfKey(dic,queryKey); Console.WriteLine($"2-获取到——键：L1对应的值是：{tmpValue}"); //根据值获取到对应的所有键 string queryValue = "23.4"; Console.WriteLine($"当前查询的值是：{queryValue}"); List<string> tmpKey = DictionaryHelper.GetKeyOfValue(dic, queryValue); ShowInfoOfList(tmpKey); //修改指定键的值 string needModifyKey = "L4"; string replaceValue1 = "66"; Console.WriteLine($"当前需要修改的键是：{needModifyKey}_替换为的值是：{replaceValue1}"); DictionaryHelper.ModifyInfoOfKey(dic, needModifyKey, replaceValue1); Console.WriteLine($"修改的键是：{needModifyKey}_替换为的值是：{replaceValue1}后所有内容如下："); ShowInfoOfDic(dic); //修改指定值为相同信息 string needModifyValue = "23.6"; string replaceValue = "33.9"; Console.WriteLine($"当前需要修改的值是：{needModifyValue}_替换为的值是：{replaceValue}"); DictionaryHelper.ModifyInfoOfValue(dic,needModifyValue,replaceValue); Console.WriteLine($"修改的值是：{needModifyValue}_替换为的值是：{replaceValue}后所有内容如下："); ShowInfoOfDic(dic); //根据键移除信息 string curRemoveKey = "L3"; Console.WriteLine($"当前移除的键是：{curRemoveKey}"); DictionaryHelper.RemoveInfoOfKey(dic,curRemoveKey); Console.WriteLine($"移除的键是：{curRemoveKey}后所有内容如下："); ShowInfoOfDic(dic); //根据值移除信息 string curRemoveValue = "23.4"; Console.WriteLine($"当前移除的值是：{curRemoveValue}"); DictionaryHelper.RemoveInfoOfValue(dic, curRemoveValue); Console.WriteLine($"移除的值是：{curRemoveValue}后所有内容如下："); ShowInfoOfDic(dic); Console.ReadLine(); } //获取一个字典 public static Dictionary<string, string> GetDictionary() { Dictionary<string, string> dic = new Dictionary<string, string>(); DictionaryHelper.AddInfoToDic(dic, "L1","23.4"); DictionaryHelper.AddInfoToDic(dic, "L2", "23.6"); DictionaryHelper.AddInfoToDic(dic, "L3", "23.8"); DictionaryHelper.AddInfoToDic(dic, "L4", "23.4"); DictionaryHelper.AddInfoToDic(dic, "L5", "23.6"); DictionaryHelper.AddInfoToDic(dic, "L6", "23.4"); return dic; } //显示字典中的所有信息 private static void ShowInfoOfDic(Dictionary<string,string> dic) { if (dic == null || dic.Count < 1) return; foreach (var item in dic) { Console.WriteLine($"键：{item.Key} 值：{item.Value}"); } Console.WriteLine($"--------------显示信息完成______当前字典：{dic.GetType().Name} 共有数据：{dic.Count} 条\r\n"); } //显示列表信息 private static void ShowInfoOfList(List<string> list) { if (list == null || list.Count < 1) return; foreach (var item in list) { Console.WriteLine($"对应内容：{item}"); } Console.WriteLine($"--------------显示信息完成______当前列表：{list.GetType().Name} 共有数据：{list.Count} 条\r\n"); } }//Class_end}感谢各位的阅读，以上就是“C#对Dictionary内容的通用操作是什么”的内容了，经过本文的学习后，相信大家对C#对Dictionary内容的通用操作是什么这一问题有了更深刻的体会，具体使用情况还需要大家实践验证。这里是编程网，小编将为大家推送更多相关知识点的文章，欢迎关注！
