SortedDictionary<TKey,TValue>能對字典排序

using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks;namespace SortDictionary {class Program{static void Main(string[] args){TestDictionarySort();TestDictionarySort2();Console.Read();}private static void TestDictionarySort(){SortedDictionary<string, string> sd = new SortedDictionary<string, string>();sd.Add("321", "fdsgsags");sd.Add("acb", "test test");sd.Add("1123", "lslgsgl");sd.Add("2bcd13", "value");foreach (KeyValuePair<string, string> item in sd){Console.Write("鍵名：" + item.Key + " 鍵值：" + item.Value+"\r\n");}}private static void TestDictionarySort2(){SortedDictionary<string, string> sd = new SortedDictionary<string, string>();sd.Add("321", "fdsgsags");sd.Add("acb", "test test");sd.Add("1123", "lslgsgl");sd.Add("2bcd13", "value");Console.Write("\r\n正序排序數據：\r\n");foreach (KeyValuePair<string, string> item in sd){Console.Write("鍵名：" + item.Key + " 鍵值：" + item.Value + "\r\n");}//重新封裝到Dictionary里（PS：因為排序后我們將不在使用排序了，所以就使用Dictionary）Dictionary<string, string> dc = new Dictionary<string, string>();foreach (KeyValuePair<string, string> item in sd.Reverse()){dc.Add(item.Key, item.Value);}sd = null;//再看其輸出結果：Console.Write("\r\n反序排序數據：\r\n");foreach (KeyValuePair<string, string> item in dc){Console.Write("鍵名：" + item.Key + " 鍵值：" + item.Value + "\r\n");} }} }

結果：

?

通過字典key得到value

var keywordDic = new Dictionary<int, string>()
{
{0,"搜索關鍵字"},
{1,"分類id"},
{2,"品牌id"}
};
var keywordCode = keywordDic[(int)item.KeyWordType];

?

Listl轉Dictionary

public Dictionary<int?, string> GetForbiddenTypeList(){//var dic = new Dictionary<int?, string>();var list = new List<ForbiddenTypeDetail>();var result = BSClient.Send<ForbiddenTypeResponse>(new ForbiddenTypeRequest());if (result.DoFlag){//foreach (var item in result.ForbiddenType)//{// if (!string.IsNullOrEmpty(item.Type) && item.Id.HasValue)// dic.Add(item.Id, item.Type);//} list = Mapper.MappGereric<ForbiddenType, ForbiddenTypeDetail>(result.ForbiddenType).ToList();}return list.Where(item => (!string.IsNullOrEmpty(item.Type) && item.Id.HasValue)).ToDictionary(item => item.Id, item => item.Type);//return dic;}

?todictionary:

var moduleDict = adListRes.ReturnValue.AdModuleDataDto.Where(itemlist => itemlist.Data.ToList().Count > 0).ToDictionary
(itemlist => itemlist.ModuleCode, itemlist => itemlist.Data.ToList())

轉載于:https://www.cnblogs.com/shy1766IT/p/5046389.html

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