C#对Dictionary内容的通用操作是什么

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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}

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