Core MVC Pass-value request and HttpContext

1. Method of passing values

Method of using Request (1-3):

1) Query: Get links? The values that follow

such as: Http://localhost:55842/Home/About?name=kxy

 public   Iactionresult about () {Vie wdata[  " message  " ] =  " your application Description page.   "            ;  // -------------------------Request--------------- ----------------- string  name = Request.query["  name   "];//  Get a connection? name=kxy  return          Content (name); }

Result: page display Kxy

2) Form: Get the value of form post

string name = request.form["name"];

3) Cookies: Locally saved values

string name1 = request.cookies["name"];

Methods for using HttpContext (4):

4) Session: Value Saved by server

usingSystem.Diagnostics;usingMICROSOFT.ASPNETCORE.MVC;usingCoremvc.models;usingMicrosoft.AspNetCore.Http;namespacecoremvc.controllers{ Public classHomecontroller:controller { PublicIactionresult Index () {returnView (); }         PublicIactionresult About () {//-------------------------HttpContext----------------------------//--------------------------Session-------------------------------//need HttpContext to reference using Microsoft.AspNetCore.Http;HttpContext.Session.SetString ("name","Kxy"); stringName = HttpContext.Session.GetString ("name"); HttpContext.Session.Remove ("name"); HttpContext.Session.SetInt32 (" Age", A); int? Age = HttpContext.Session.GetInt32 (" Age"); returnContent (name); }    }}

Also, you need to modify the Startup.cs

The Configureservices method injects (that is, adds)            services. Addsession (); The Configure method adds ( tells ASP. NET core uses memory to store session data )            app. Usesession ();

Core MVC Pass-value request and HttpContext