该控制器的代码为
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; namespace WebApplication1.Controllers { public class Demo2Controller : Controller { // GET: Demo2 public ActionResult Index() { return View(); } //基本类型的绑定 [HttpPost] //int? 是该int可以为空值 public ActionResult Index(string id, int? score, string comment) { ViewBag.Info = $"{id}提交的评论信息是{comment},评分是{score}"; return View(); } } }
@{ Layout = null; } <!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width" /> <title>Index</title> </head> <body> <div> @*action是提交的页面*@ <form action="/Demo2/Index" method="post"> @*name要对应我后台的*@ <div>账号:<input type="text" name="id" /> </div> <div>评分:<input type="text" name="score" /> </div> <div>评价:<textarea name="comment" cols="50" rows="10"></textarea> </div> <input type="submit" value="提交" /> <h1>@ViewBag.Info</h1> </form> </div> </body> </html>
PS:
如果想提交完还保存原来的值,需要在原文本框添加value属性指定为ViewBag传过来的值