Initial Commit

App.razor

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+
+<CascadingAuthenticationState>
+    <Router AppAssembly="@typeof(Program).Assembly">
+        <Found Context="routeData">
+            <AuthorizeRouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
+        </Found>
+        <NotFound>
+            <LayoutView Layout="@typeof(MainLayout)">
+                <p>Sorry, there's nothing at this address.</p>
+            </LayoutView>
+        </NotFound>
+    </Router>
+</CascadingAuthenticationState>

BlazorServerAuthentication.csproj

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+<Project Sdk="Microsoft.NET.Sdk.Web">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
+    <UserSecretsId>aspnet-BlazorServerAuthentication-81B5043F-9E47-4861-95DF-9E4E8B2211BD</UserSecretsId>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Dapper" Version="2.0.35" />
+    <PackageReference Include="Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore" Version="3.1.9" />
+    <PackageReference Include="Microsoft.AspNetCore.Http" Version="2.2.2" />
+    <PackageReference Include="Microsoft.AspNetCore.Identity.EntityFrameworkCore" Version="3.1.9" />
+    <PackageReference Include="Microsoft.AspNetCore.Identity.UI" Version="3.1.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="3.1.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="3.1.9" />
+    <PackageReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Design" Version="3.1.4" />
+    <PackageReference Include="Microsoft.AspNetCore.Blazor.HttpClient" Version="3.0.0-preview8.19405.7" PrivateAssets="all" />
+  </ItemGroup>
+
+</Project>

BlazorServerAuthentication.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.30621.155
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BlazorServerAuthentication", "BlazorServerAuthentication.csproj", "{1BBC6017-B88D-48FE-B729-53CF3EF746B8}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{1BBC6017-B88D-48FE-B729-53CF3EF746B8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1BBC6017-B88D-48FE-B729-53CF3EF746B8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1BBC6017-B88D-48FE-B729-53CF3EF746B8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1BBC6017-B88D-48FE-B729-53CF3EF746B8}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {0E99403C-D576-460A-B214-9F37163F656D}
+	EndGlobalSection
+EndGlobal

Data/RevalidatingIdentityAuthenticationStateProvider.cs

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+using System;
+using System.Security.Claims;
+using System.Threading;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Components.Authorization;
+using Microsoft.AspNetCore.Components.Server;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Microsoft.AspNetCore.Identity;
+using Microsoft.Extensions.Options;
+
+namespace BlazorServerAuthentication.Data
+{
+    public class RevalidatingIdentityAuthenticationStateProvider<TUser>
+        : RevalidatingServerAuthenticationStateProvider where TUser : class
+    {
+        private readonly IServiceScopeFactory _scopeFactory;
+        private readonly IdentityOptions _options;
+
+        public RevalidatingIdentityAuthenticationStateProvider(
+            ILoggerFactory loggerFactory,
+            IServiceScopeFactory scopeFactory,
+            IOptions<IdentityOptions> optionsAccessor)
+            : base(loggerFactory)
+        {
+            _scopeFactory = scopeFactory;
+            _options = optionsAccessor.Value;
+        }
+
+        protected override TimeSpan RevalidationInterval => TimeSpan.FromMinutes(30);
+
+        protected override async Task<bool> ValidateAuthenticationStateAsync(
+            AuthenticationState authenticationState, CancellationToken cancellationToken)
+        {
+            // Get the user manager from a new scope to ensure it fetches fresh data
+            var scope = _scopeFactory.CreateScope();
+            try
+            {
+                var userManager = scope.ServiceProvider.GetRequiredService<UserManager<TUser>>();
+                return await ValidateSecurityStampAsync(userManager, authenticationState.User);
+            }
+            finally
+            {
+                if (scope is IAsyncDisposable asyncDisposable)
+                {
+                    await asyncDisposable.DisposeAsync();
+                }
+                else
+                {
+                    scope.Dispose();
+                }
+            }
+        }
+
+        private async Task<bool> ValidateSecurityStampAsync(UserManager<TUser> userManager, ClaimsPrincipal principal)
+        {
+            var user = await userManager.GetUserAsync(principal);
+            if (user == null)
+            {
+                return false;
+            }
+            else if (!userManager.SupportsUserSecurityStamp)
+            {
+                return true;
+            }
+            else
+            {
+                var principalStamp = principal.FindFirstValue(_options.ClaimsIdentity.SecurityStampClaimType);
+                var userStamp = await userManager.GetSecurityStampAsync(user);
+                return principalStamp == userStamp;
+            }
+        }
+    }
+}

Pages/Counter.razor

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+@page "/counter"
+
+<h1>Counter</h1>
+
+<p>Current count: @currentCount</p>
+
+<button class="btn btn-primary" @onclick="IncrementCount">Click me</button>
+
+@code {
+    private int currentCount = 0;
+
+    private void IncrementCount()
+    {
+        currentCount++;
+    }
+}

Pages/Error.cshtml

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+@page
+
+
+<h1 class="text-danger">Error.</h1>
+<h2 class="text-danger">An error occurred while processing your request.</h2>
+
+<h3>Development Mode</h3>
+<p>
+    Swapping to <strong>Development</strong> environment will display more detailed information about the error that occurred.
+</p>
+<p>
+    <strong>The Development environment shouldn't be enabled for deployed applications.</strong>
+    It can result in displaying sensitive information from exceptions to end users.
+    For local debugging, enable the <strong>Development</strong> environment by setting the <strong>ASPNETCORE_ENVIRONMENT</strong> environment variable to <strong>Development</strong>
+    and restarting the app.
+</p>

Pages/Index.razor

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+@page "/"
+
+<h1>Hello, world!</h1>
+
+Welcome to your new app.
+
+<SurveyPrompt Title="How is Blazor working for you?" />

Pages/_Host.cshtml

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+@page "/{handler?}"
+@namespace BlazorServerAuthentication.Pages
+@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers
+@{
+    Layout = null;
+}
+@model _HostAuthModel
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>BlazorServerAuthentication</title>
+    <base href="~/" />
+    <link rel="stylesheet" href="css/bootstrap/bootstrap.min.css" />
+    <link href="css/site.css" rel="stylesheet" />
+</head>
+<body>
+    <app>
+        <component type="typeof(App)" render-mode="Server" />
+    </app>
+
+    <div id="blazor-error-ui">
+        <environment include="Staging,Production">
+            An error has occurred. This application may no longer respond until reloaded.
+        </environment>
+        <environment include="Development">
+            An unhandled exception has occurred. See browser dev tools for details.
+        </environment>
+        <a href="" class="reload">Reload</a>
+        <a class="dismiss">🗙</a>
+    </div>
+
+    <script src="_framework/blazor.server.js"></script>    
+</body>
+</html>

Program.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+
+namespace BlazorServerAuthentication
+{
+    public class Program
+    {
+        public static void Main(string[] args)
+        {
+            CreateHostBuilder(args).Build().Run();
+        }
+
+        public static IHostBuilder CreateHostBuilder(string[] args) =>
+            Host.CreateDefaultBuilder(args)
+                .ConfigureWebHostDefaults(webBuilder =>
+                {
+                    webBuilder.UseStartup<Startup>();
+                });
+    }
+}

Properties/launchSettings.json

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+{
+  "iisSettings": {
+    "windowsAuthentication": false,
+    "anonymousAuthentication": true,
+    "iisExpress": {
+      "applicationUrl": "http://localhost:51604",
+      "sslPort": 44302
+    }
+  },
+  "profiles": {
+    "IIS Express": {
+      "commandName": "IISExpress",
+      "launchBrowser": true,
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    },
+    "BlazorServerAuthentication": {
+      "commandName": "Project",
+      "launchBrowser": true,
+      "applicationUrl": "https://localhost:5001;http://localhost:5000",
+      "environmentVariables": {
+        "ASPNETCORE_ENVIRONMENT": "Development"
+      }
+    }
+  }
+}

Properties/serviceDependencies.json

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+{
+  "dependencies": {
+    "mssql1": {
+      "type": "mssql",
+      "connectionId": "BlazorServerAuthenticationContextConnection"
+    }
+  }
+}

Properties/serviceDependencies.local.json

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+{
+  "dependencies": {
+    "mssql1": {
+      "type": "mssql.local",
+      "connectionId": "BlazorServerAuthenticationContextConnection"
+    }
+  }
+}

Shared/LoginDisplay.razor

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+@using System.Web
+
+<AuthorizeView>
+    <Authorized>
+        <b>Hello, @context.User.Identity.Name!</b>
+        <a class="ml-md-auto btn btn-primary" href="/Logout" target="_top">Logout</a>
+    </Authorized>
+    <NotAuthorized>
+        <input type="text" placeholder="User Name" @bind="@Username" />
+        &nbsp;&nbsp;
+        <input type="password" placeholder="Password" @bind="@Password" />
+        <a class="ml-md-auto btn btn-primary" href="/login?username=@encode(@Username)&password=@encode(@Password)" target="_top">Login</a>
+    </NotAuthorized>
+</AuthorizeView>
+
+@code {
+    string Username = "";
+    string Password = "";
+
+    private string encode(string param)
+    {
+        return HttpUtility.UrlEncode(param);
+    }
+}

Shared/MainLayout.razor

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+@inherits LayoutComponentBase
+
+<div class="sidebar">
+    <NavMenu />
+</div>
+
+<div class="main">
+    <div class="top-row px-4 auth">
+        <LoginDisplay />
+    </div>
+
+    <div class="content px-4">
+        @Body
+    </div>
+</div>

Shared/NavMenu.razor

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+<div class="top-row pl-4 navbar navbar-dark">
+    <a class="navbar-brand" href="">BlazorServerAuthentication</a>
+    <button class="navbar-toggler" @onclick="ToggleNavMenu">
+        <span class="navbar-toggler-icon"></span>
+    </button>
+</div>
+
+<div class="@NavMenuCssClass" @onclick="ToggleNavMenu">
+    <ul class="nav flex-column">
+        <li class="nav-item px-3">
+            <NavLink class="nav-link" href="" Match="NavLinkMatch.All">
+                <span class="oi oi-home" aria-hidden="true"></span> Home
+            </NavLink>
+        </li>
+        <li class="nav-item px-3">
+            <NavLink class="nav-link" href="counter">
+                <span class="oi oi-plus" aria-hidden="true"></span> Counter
+            </NavLink>
+        </li>
+        <li class="nav-item px-3">
+            <NavLink class="nav-link" href="fetchdata">
+                <span class="oi oi-list-rich" aria-hidden="true"></span> Fetch data
+            </NavLink>
+        </li>
+        <li class="nav-item px-3">
+            <NavLink class="nav-link" href="CallServerSide">
+                <span class="oi oi-list-rich" aria-hidden="true"></span> Call Server Side
+            </NavLink>
+        </li>
+    </ul>
+</div>
+
+@code {
+    private bool collapseNavMenu = true;
+
+    private string NavMenuCssClass => collapseNavMenu ? "collapse" : null;
+
+    private void ToggleNavMenu()
+    {
+        collapseNavMenu = !collapseNavMenu;
+    }
+}

Shared/SurveyPrompt.razor

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+<div class="alert alert-secondary mt-4" role="alert">
+    <span class="oi oi-pencil mr-2" aria-hidden="true"></span>
+    <strong>@Title</strong>
+
+    <span class="text-nowrap">
+        Please take our
+        <a target="_blank" class="font-weight-bold" href="https://go.microsoft.com/fwlink/?linkid=2112271">brief survey</a>
+    </span>
+    and tell us what you think.
+</div>
+
+@code {
+    // Demonstrates how a parent component can supply parameters
+    [Parameter]
+    public string Title { get; set; }
+}