C# Dictionary使用

最新推荐文章于 2025-04-02 19:21:37 发布

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#C# #Dictionary #字典

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本文介绍了一个使用C#进行字典操作的例子，包括如何创建、读取、更新字典中的数据，并提供了两种不同的遍历字典的方法。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace WebApplication105.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            Dictionary<string, string> DictionaryList = GetDictionary();
            //根据字典Key获取Value
            string name = DictionaryList["S001"];
            //修改字典的Value
            DictionaryList["S001"] = "学生01";
            //foreach遍历字典
            foreach (KeyValuePair<string, string> item in DictionaryList)
            {
                string key = item.Key;
                string value = item.Value;
            }
            //for遍历字典
            for (int i = 0; i < DictionaryList.Count; i++)
            {
                KeyValuePair<string, string> item = DictionaryList.ElementAt(i);
                string key = item.Key;
                string value = item.Value;
            }
            return View();
        }
        /// <summary>
        /// 往字典中添加数据
        /// </summary>
        /// <returns></returns>
        private Dictionary<string, string> GetDictionary()
        {
            Dictionary<string, string> DictionaryList = new Dictionary<string, string>();
            DictionaryList.Add("S001", "学生1");
            DictionaryList.Add("S002", "学生2");
            DictionaryList.Add("S003", "学生3");
            DictionaryList.Add("S004", "学生4");
            DictionaryList.Add("S005", "学生5");
            return DictionaryList;
        }
    }
}