netcore/asp-netcore-session-sample/Pages/Index.cshtml

@*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
*@
@page
@using Microsoft.AspNetCore.Http
@model IndexModel
@{
  ViewData["Title"] = "Asp.Net Core Session Sample";
}

<h1>@ViewData["Title"]</h1>

<h2>State management</h2>

<div class="row">
  <div class="col-md-8">
    <form method="post">
      <div class="panel panel-default">
        <div class="panel-heading">
          <button type="submit" asp-page-handler="ChangeAge" class="pull-right btn btn-danger">Change Age</button>
          <h3 class="panel-title" style="line-height:2.1">Name and Age</h3>
        </div>
        <div class="panel-body">
          <p>
            The name and age are stored in session. Select the <span style="font-weight:bold">Change Age</span>
            button to update the session to a new random age value.
          </p>
          <p>
            Session values by the model with
            <code>@@Model.&lt;PropertyName&gt;</code>:
          </p>
          <p><b>Name:</b> @Model.SessionInfo_Name <b>Age:</b> @Model.SessionInfo_Age</p>
          <hr>
          <p>Session values direct </p>
          <p>
            <b>Name:</b> @HttpContext.Session.GetString(IndexModel.SessionKeyName)
            <b>Age:</b>
            @HttpContext.Session.GetInt32(IndexModel.SessionKeyAge).ToString()
          </p>
        </div>
      </div>
    </form>
  </div>
</div>

<div class="row">
  <div class="col-md-8">
    <div class="panel panel-default">
      <div class="panel-heading">
        <h3 class="panel-title">HttpContext.Items Middleware Value</h3>
      </div>
      <div class="panel-body">
        <p>
          The middleware value is set into the <code>HttpContext.Items</code> collection by
          the <code>HttpContextItemsMiddleware</code> before Razor Pages processes the request.
          The value is retreived by the page and displayed.
        </p>
        <p>Value: @Model.SessionInfo_MiddlewareValue</p>
      </div>
    </div>
  </div>
</div>

<div class="row">
  <div class="col-md-8">
    <form method="post">
      <div class="panel panel-default">
        <div class="panel-heading clearfix">
          <button type="submit" asp-page-handler="UpdateSessionDate" class="pull-right btn btn-danger">Update Session Time</button>
          <a href="/" class="pull-right btn btn-danger" style="margin-right:5px">Reload Page (No Update)</a>
          <h3 class="panel-title" style="line-height:2.1">Session Time</h3>
        </div>
        <div class="panel-body">
          <p>
            The session time is stored in session. Select the <span style="font-weight:bold">
              Reload Page (No Update)
            </span> button to display the current time and the time stored in session.
            Select the <span style="font-weight:bold">Update Session Time</span> button to store the current time in session.
          </p>
          <p>Current Time: @Model.SessionInfo_CurrentTime</p>
          <p>Session Time: @Model.SessionInfo_SessionTime</p>
        </div>
      </div>
    </form>
  </div>
</div>