ASP .Net MVC C# 中的 ViewData 是什么？

ViewData["countries"] = countriesList;

string country = ViewData["MyCountry"].ToString();

using System.Collections.Generic; using System.Web.Mvc; namespace DemoMvcApplication.Controllers{ public class HomeController : Controller{ public ViewResult Index(){ ViewData["Countries"] = new List{ "India", "Malaysia", "Dubai", "USA", "UK" }; return View(); } } }

@{ ViewBag.Title = "Countries List"; } 
Countries List
 
 @foreach(string country in (List)ViewData["Countries"]){ 
@country
 }