传值5种方式
1，ViewBag
2，ViewData
3，TempData
4，Model
5，Session
控制器代码
public IActionResult Index() { base.ViewBag.UserName = "李潇潇"; base.ViewData["UserName"] = "王萌萌"; base.TempData["UerName"] = "彭晓晓"; User user = new() { Id = 1, Name = "吴思思", Email = "123@163.com" }; return View(user); }
Index.cshtml代码
@model AspNetCore5Demo.Models.User @{ ViewData["Title"] = "Home Page"; } <div class="text-center"> <h1>ViewBag传值</h1> <h2>UserName：@ViewBag.UserName</h2> <h1>ViewData传值</h1> <h2>UserName：@ViewData["UserName"]</h2> <h1>TempData传值</h1> <h2>UserName：@TempData["UerName"]</h2> <hr /> <h1>Model传值</h1> <h2>Id:@Model.Id</h2> <h2>Name:@Model.Name</h2> <h2>Email:@Model.Email</h2> </div>
界面显示效果
Session传值
1，Startup.cs文件中增加配置
方法-ConfigureServices 添加代码
public void ConfigureServices(IServiceCollection services)
{
services.AddSession();//添加Session
services.AddControllersWithViews();
}
2，方法-Configure 添加代码
app.UseSession();
3，控制器代码
a，需要添加引用：using Microsoft.AspNetCore.Http;
b，获取值：HttpContext.Session.GetString("UserNameSession");
c，设置值：HttpContext.Session.SetString("UserNameSession", "刘晴晴");
public IActionResult Index() { base.ViewBag.UserName = "李潇潇"; base.ViewData["UserName"] = "王萌萌"; base.TempData["UerName"] = "彭晓晓"; User user = new() { Id = 1, Name = "吴思思", Email = "123@163.com" }; //获取Session值，判断若为null则设置Session值 var sUserName= HttpContext.Session.GetString("UserNameSession"); if (sUserName == null) HttpContext.Session.SetString("UserNameSession", "刘晴晴"); return View(user); }
4,index.cshtml代码
a，引入 @using Microsoft.AspNetCore.Http
b，获取值 @Context.Session.GetString("UserNameSession")
@model AspNetCore5Demo.Models.User @using Microsoft.AspNetCore.Http @{ ViewData["Title"] = "Home Page"; } <div class="text-center"> <h1>ViewBag传值</h1> <h2>UserName：@ViewBag.UserName</h2> <h1>ViewData传值</h1> <h2>UserName：@ViewData["UserName"]</h2> <h1>TempData传值</h1> <h2>UserName：@TempData["UerName"]</h2> <hr /> <h1>Model传值</h1> <h2>Id:@Model.Id</h2> <h2>Name:@Model.Name</h2> <h2>Email:@Model.Email</h2> <!--获取Session值--> <h1>Session</h1> <h2> @Context.Session.GetString("UserNameSession") </h2> </div>