using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace 字典 { class Program { static void Main(string[] args) { //1.创建字典泛型集合(Dictionary<K,V>) Dictionary<string, string> dic = new Dictionary<string, string>(); //集合长度可通过"集合名.Count"访问 //2.添加数据 dic.Add("百度","baidu");//添加数据 dic.Add("腾讯", "Tencent"); dic.Add("淘宝", "Taobao"); //dic.Add("百度", "rg");//错误,不能添加同键名的数据 //3.查询数据,取值,通过集合名[键名] Console.WriteLine(dic.Count); Console.WriteLine(dic["百度"]); //4.删除数据 //dic.Remove("淘宝"); //Console.WriteLine(dic.Count); //5.修改数据 dic["腾讯"] = "马化腾"; Console.WriteLine("修改腾讯后:"+dic["腾讯"]); //6.遍历数据 Console.WriteLine("=============遍历Key:"); foreach(var temp in dic.Keys) { Console.WriteLine(temp); } Console.WriteLine("===========遍历Value:"); foreach (var temp in dic.Values) { Console.WriteLine(temp); } Console.WriteLine("============一次遍历:"); foreach(var temp in dic.Keys) { Console.WriteLine(temp + " " + dic[temp]); } Console.ReadKey(); } } }
字典Dictionary基本使用
猜你喜欢
转载自blog.csdn.net/a962035/article/details/79841930
今日推荐
周排行