Using sessions is troubled.

WebPostPartialJsonObject/Controllers/HomeController.cs

@@ -5,6 +5,7 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
 using System.Threading.Tasks;
+using WebPostPartialJsonObject.Extensions;
 using WebPostPartialJsonObject.Models;
 
 namespace WebPostPartialJsonObject.Controllers
@@ -25,7 +26,8 @@ namespace WebPostPartialJsonObject.Controllers
         [HttpPost, Consumes("application/json")]
         public IActionResult Index([FromBody] ExpectedViewModel data)
         {
-            return View();
+            HttpContext.Session.SetObject("KioskSettings", data);
+            return RedirectToAction("Index", "Settings");
         }
 
         public IActionResult Privacy()

WebPostPartialJsonObject/Controllers/SettingsController.cs

@@ -0,0 +1,15 @@
+using Microsoft.AspNetCore.Mvc;
+using WebPostPartialJsonObject.Extensions;
+using WebPostPartialJsonObject.Models;
+
+namespace WebPostPartialJsonObject.Controllers
+{
+    public class SettingsController : Controller
+    {
+        public IActionResult Index()
+        {
+            ExpectedViewModel data = HttpContext.Session.GetObject<ExpectedViewModel>("KioskSettings");
+            return View(data);
+        }
+    }
+}

WebPostPartialJsonObject/Extensions/SessionExtensions.cs

@@ -0,0 +1,19 @@
+using Microsoft.AspNetCore.Http;
+using Newtonsoft.Json;
+using System.Text.Json.Serialization;
+
+namespace WebPostPartialJsonObject.Extensions
+{
+    public static class SessionExtensions
+    {
+        public static void SetObject(this ISession session, string key, object value)
+        {
+            session.SetString(key, JsonConvert.SerializeObject(value));
+        }
+        public static T GetObject<T>(this ISession session, string key)
+        {
+            var value = session.GetString(key);
+            return value == null ? default : JsonConvert.DeserializeObject<T>(value);
+        }
+    }
+}

WebPostPartialJsonObject/Startup.cs

@@ -22,8 +22,12 @@ namespace WebPostPartialJsonObject
         // This method gets called by the runtime. Use this method to add services to the container.
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddControllersWithViews();
+            services.AddSession(options =>
-        }
+            {
+                options.IdleTimeout = TimeSpan.FromHours(2.0);
+            });
+             services.AddControllersWithViews().AddSessionStateTempDataProvider();
+       }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
         public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
@@ -37,6 +41,7 @@ namespace WebPostPartialJsonObject
                 app.UseExceptionHandler("/Home/Error");
             }
             app.UseStaticFiles();
+            app.UseSession();
 
             app.UseRouting();
 

WebPostPartialJsonObject/Views/Settings/Index.cshtml

@@ -0,0 +1,38 @@
+@model WebPostPartialJsonObject.Models.ExpectedViewModel
+
+@{
+    ViewData["Title"] = "Index";
+}
+
+<h1>Index</h1>
+
+<h4>ExpectedViewModel</h4>
+<hr />
+<div class="row">
+    <div class="col-md-4">
+        <form asp-action="Index">
+            <div asp-validation-summary="ModelOnly" class="text-danger"></div>
+            <div class="form-group">
+                <label asp-for="KioskName" class="control-label"></label>
+                <input asp-for="KioskName" class="form-control" />
+                <span asp-validation-for="KioskName" class="text-danger"></span>
+            </div>
+            <div class="form-group">
+                <label asp-for="StartUp" class="control-label"></label>
+                <input asp-for="StartUp" class="form-control" />
+                <span asp-validation-for="StartUp" class="text-danger"></span>
+            </div>
+            <div class="form-group">
+                <input type="submit" value="Save" class="btn btn-primary" />
+            </div>
+        </form>
+    </div>
+</div>
+
+<div>
+    <a asp-action="Index">Back to List</a>
+</div>
+
+@section Scripts {
+    @{await Html.RenderPartialAsync("_ValidationScriptsPartial");}
+}

WebPostPartialJsonObject/WebPostPartialJsonObject.csproj

@@ -4,4 +4,9 @@
     <TargetFramework>netcoreapp3.1</TargetFramework>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.1.5" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
+  </ItemGroup>
+
 </Project>