Enable nullable references in project templates

Contributes to #33947
dotnet · Jul 1, 2021 · 7db5526 · 7db5526
1 parent 179c2b5
commit 7db5526
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Showing 54 changed files with 97 additions and 52 deletions.
diff --git a/src/ProjectTemplates/Web.ProjectTemplates/BlazorServerWeb-CSharp.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/BlazorServerWeb-CSharp.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <UserSecretsId Condition="'$(IndividualAuth)' == 'True' OR '$(OrganizationalAuth)' == 'True'">aspnet-BlazorServerWeb_CSharp-53bc9b9d-9d6a-45d4-8429-2a2761773502</UserSecretsId>
     <WebProject_DirectoryAccessLevelKey Condition="'$(OrganizationalAuth)' == 'True' AND '$(OrgReadAccess)' != 'True'">0</WebProject_DirectoryAccessLevelKey>
     <WebProject_DirectoryAccessLevelKey Condition="'$(OrganizationalAuth)' == 'True' AND '$(OrgReadAccess)' == 'True'">1</WebProject_DirectoryAccessLevelKey>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/ComponentsWebAssembly-CSharp.Client.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/ComponentsWebAssembly-CSharp.Client.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <!--#if PWA -->
     <ServiceWorkerAssetsManifest>service-worker-assets.js</ServiceWorkerAssetsManifest>
     <!--#endif -->

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/ComponentsWebAssembly-CSharp.Server.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/ComponentsWebAssembly-CSharp.Server.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <UserSecretsId Condition="'$(IndividualAuth)' == 'True' OR '$(OrganizationalAuth)' == 'True'">ComponentsWebAssembly-CSharp.Server-53bc9b9d-9d6a-45d4-8429-2a2761773502</UserSecretsId>
     <WebProject_DirectoryAccessLevelKey Condition="'$(OrganizationalAuth)' == 'True' AND '$(OrgReadAccess)' != 'True'">0</WebProject_DirectoryAccessLevelKey>
     <WebProject_DirectoryAccessLevelKey Condition="'$(OrganizationalAuth)' == 'True' AND '$(OrgReadAccess)' == 'True'">1</WebProject_DirectoryAccessLevelKey>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/ComponentsWebAssembly-CSharp.Shared.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/ComponentsWebAssembly-CSharp.Shared.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/EmptyWeb-CSharp.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/EmptyWeb-CSharp.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <NoDefaultLaunchSettingsFile Condition="'$(ExcludeLaunchSettings)' == 'True'">True</NoDefaultLaunchSettingsFile>
     <RootNamespace Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">Company.WebApplication1</RootNamespace>
     <LangVersion>preview</LangVersion>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/GrpcService-CSharp.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/GrpcService-CSharp.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
 
   <ItemGroup>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/RazorClassLibrary-CSharp.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/RazorClassLibrary-CSharp.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <AddRazorSupportForMvc Condition="'$(SupportPagesAndViews)' == 'True'">true</AddRazorSupportForMvc>
     <RootNamespace Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">Company.RazorClassLibrary1</RootNamespace>
   </PropertyGroup>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/RazorPagesWeb-CSharp.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/RazorPagesWeb-CSharp.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <UserSecretsId Condition="'$(IndividualAuth)' == 'True' OR '$(OrganizationalAuth)' == 'True'">aspnet-Company.WebApplication1-0ce56475-d1db-490f-8af1-a881ea4fcd2d</UserSecretsId>
     <NoDefaultLaunchSettingsFile Condition="'$(ExcludeLaunchSettings)' == 'True'">True</NoDefaultLaunchSettingsFile>
     <RootNamespace Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">Company.WebApplication1</RootNamespace>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/StarterWeb-CSharp.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/StarterWeb-CSharp.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <UserSecretsId Condition="'$(IndividualAuth)' == 'True' OR '$(OrganizationalAuth)' == 'True'">aspnet-Company.WebApplication1-53bc9b9d-9d6a-45d4-8429-2a2761773502</UserSecretsId>
     <NoDefaultLaunchSettingsFile Condition="'$(ExcludeLaunchSettings)' == 'True'">True</NoDefaultLaunchSettingsFile>
     <RootNamespace Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">Company.WebApplication1</RootNamespace>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/WebApi-CSharp.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/WebApi-CSharp.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <UserSecretsId Condition="'$(IndividualAuth)' == 'True' OR '$(OrganizationalAuth)' == 'True'">aspnet-Company.WebApplication1-53bc9b9d-9d6a-45d4-8429-2a2761773502</UserSecretsId>
     <NoDefaultLaunchSettingsFile Condition="'$(ExcludeLaunchSettings)' == 'True'">True</NoDefaultLaunchSettingsFile>
     <RootNamespace Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">Company.WebApplication1</RootNamespace>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/Worker-CSharp.csproj.in b/src/ProjectTemplates/Web.ProjectTemplates/Worker-CSharp.csproj.in
@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <UserSecretsId>dotnet-Company.Application1-53bc9b9d-9d6a-45d4-8429-2a2761773502</UserSecretsId>
     <NoDefaultLaunchSettingsFile Condition="'$(ExcludeLaunchSettings)' == 'True'">True</NoDefaultLaunchSettingsFile>
     <RootNamespace Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">Company.Application1</RootNamespace>

diff --git a/...Templates/content/BlazorServerWeb-CSharp/Areas/Identity/Pages/Shared/_LoginPartial.cshtml b/...Templates/content/BlazorServerWeb-CSharp/Areas/Identity/Pages/Shared/_LoginPartial.cshtml
@@ -7,7 +7,7 @@
 @if (SignInManager.IsSignedIn(User))
 {
     <li class="nav-item">
-        <a  class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @User.Identity.Name!</a>
+        <a  class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @User.Identity?.Name!</a>
     </li>
     <li class="nav-item">
         <form class="form-inline" asp-area="Identity" asp-page="/Account/Logout" asp-route-returnUrl="/" method="post">

diff --git a/...jectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Data/WeatherForecast.cs b/...jectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Data/WeatherForecast.cs
@@ -10,6 +10,6 @@ public class WeatherForecast
 
         public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
 
-        public string Summary { get; set; }
+        public string? Summary { get; set; }
     }
 }
diff --git a/...rojectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Pages/Error.cshtml.cs b/...rojectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Pages/Error.cshtml.cs
@@ -13,7 +13,7 @@ namespace BlazorServerWeb_CSharp.Pages
     [IgnoreAntiforgeryToken]
     public class ErrorModel : PageModel
     {
-        public string RequestId { get; set; }
+        public string? RequestId { get; set; }
 
         public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
 

diff --git a/...rojectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Pages/FetchData.razor b/...rojectTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Pages/FetchData.razor
@@ -37,7 +37,7 @@ else
 }
 
 @code {
-    private WeatherForecast[] forecasts;
+    private WeatherForecast[]? forecasts;
 
     protected override async Task OnInitializedAsync()
     {

diff --git a/...ojectTemplates/content/BlazorServerWeb-CSharp/Shared/LoginDisplay.IndividualB2CAuth.razor b/...ojectTemplates/content/BlazorServerWeb-CSharp/Shared/LoginDisplay.IndividualB2CAuth.razor
@@ -6,11 +6,11 @@
     <Authorized>
         @if (canEditProfile)
         {
-            <a href="MicrosoftIdentity/Account/EditProfile">Hello, @context.User.Identity.Name!</a>
+            <a href="MicrosoftIdentity/Account/EditProfile">Hello, @context.User.Identity?.Name!</a>
         }
         else
         {
-            <text>Hello, @context.User.Identity.Name!</text>
+            <text>Hello, @context.User.Identity?.Name!</text>
         }
         <a href="MicrosoftIdentity/Account/SignOut">Log out</a>
     </Authorized>

diff --git a/...ectTemplates/content/BlazorServerWeb-CSharp/Shared/LoginDisplay.IndividualLocalAuth.razor b/...ectTemplates/content/BlazorServerWeb-CSharp/Shared/LoginDisplay.IndividualLocalAuth.razor
@@ -1,6 +1,6 @@
 <AuthorizeView>
     <Authorized>
-        <a href="Identity/Account/Manage">Hello, @context.User.Identity.Name!</a>
+        <a href="Identity/Account/Manage">Hello, @context.User.Identity?.Name!</a>
         <form method="post" action="Identity/Account/LogOut">
             <button type="submit" class="nav-link btn btn-link">Log out</button>
         </form>

diff --git a/...jectTemplates/content/BlazorServerWeb-CSharp/Shared/LoginDisplay.OrganizationalAuth.razor b/...jectTemplates/content/BlazorServerWeb-CSharp/Shared/LoginDisplay.OrganizationalAuth.razor
@@ -1,6 +1,6 @@
 <AuthorizeView>
     <Authorized>
-        Hello, @context.User.Identity.Name!
+        Hello, @context.User.Identity?.Name!
         <a href="MicrosoftIdentity/Account/SignOut">Log out</a>
     </Authorized>
     <NotAuthorized>

diff --git a/...Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/LoginDisplay.WindowsAuth.razor b/...Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/LoginDisplay.WindowsAuth.razor
@@ -1,3 +1,3 @@
 <AuthorizeView>
-    Hello, @context.User.Identity.Name!
+    Hello, @context.User.Identity?.Name!
 </AuthorizeView>
diff --git a/....ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/NavMenu.CallsMicrosoftGraph.razor b/....ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/NavMenu.CallsMicrosoftGraph.razor
@@ -33,7 +33,7 @@
 @code {
     private bool collapseNavMenu = true;
 
-    private string NavMenuCssClass => collapseNavMenu ? "collapse" : null;
+    private string? NavMenuCssClass => collapseNavMenu ? "collapse" : null;
 
     private void ToggleNavMenu()
     {

diff --git a/...ates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/NavMenu.CallsWebApi.razor b/...ates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/NavMenu.CallsWebApi.razor
@@ -33,7 +33,7 @@
 @code {
     private bool collapseNavMenu = true;
 
-    private string NavMenuCssClass => collapseNavMenu ? "collapse" : null;
+    private string? NavMenuCssClass => collapseNavMenu ? "collapse" : null;
 
     private void ToggleNavMenu()
     {

diff --git a/...tes/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/NavMenu.NoGraphOrApi.razor b/...tes/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/NavMenu.NoGraphOrApi.razor
@@ -28,7 +28,7 @@
 @code {
     private bool collapseNavMenu = true;
 
-    private string NavMenuCssClass => collapseNavMenu ? "collapse" : null;
+    private string? NavMenuCssClass => collapseNavMenu ? "collapse" : null;
 
     private void ToggleNavMenu()
     {

diff --git a/...ctTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/SurveyPrompt.razor b/...ctTemplates/Web.ProjectTemplates/content/BlazorServerWeb-CSharp/Shared/SurveyPrompt.razor
@@ -12,5 +12,5 @@
 @code {
     // Demonstrates how a parent component can supply parameters
     [Parameter]
-    public string Title { get; set; }
+    public string? Title { get; set; }
 }
diff --git a/...es/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/Pages/FetchData.razor b/...es/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/Pages/FetchData.razor
@@ -45,7 +45,7 @@ else
 }
 
 @code {
-    private WeatherForecast[] forecasts;
+    private WeatherForecast[]? forecasts;
 
     protected override async Task OnInitializedAsync()
     {
@@ -74,7 +74,7 @@ else
 
         public int TemperatureC { get; set; }
 
-        public string Summary { get; set; }
+        public string? Summary { get; set; }
 
         public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
     }

diff --git a/...content/ComponentsWebAssembly-CSharp/Client/Shared/LoginDisplay.IndividualLocalAuth.razor b/...content/ComponentsWebAssembly-CSharp/Client/Shared/LoginDisplay.IndividualLocalAuth.razor
@@ -7,7 +7,7 @@
 <AuthorizeView>
 @*#if (Hosted)
     <Authorized>
-        <a href="authentication/profile">Hello, @context.User.Identity.Name!</a>
+        <a href="authentication/profile">Hello, @context.User.Identity?.Name!</a>
         <button class="nav-link btn btn-link" @onclick="BeginSignOut">Log out</button>
     </Authorized>
     <NotAuthorized>
@@ -16,7 +16,7 @@
     </NotAuthorized>
   #else
     <Authorized>
-        Hello, @context.User.Identity.Name!
+        Hello, @context.User.Identity?.Name!
         <button class="nav-link btn btn-link" @onclick="BeginSignOut">Log out</button>
     </Authorized>
     <NotAuthorized>

diff --git a/.../content/ComponentsWebAssembly-CSharp/Client/Shared/LoginDisplay.IndividualMsalAuth.razor b/.../content/ComponentsWebAssembly-CSharp/Client/Shared/LoginDisplay.IndividualMsalAuth.razor
@@ -6,7 +6,7 @@
 
 <AuthorizeView>
     <Authorized>
-        Hello, @context.User.Identity.Name!
+        Hello, @context.User.Identity?.Name!
         <button class="nav-link btn btn-link" @onclick="BeginLogout">Log out</button>
     </Authorized>
     <NotAuthorized>

diff --git a/...tes/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/Shared/NavMenu.razor b/...tes/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/Shared/NavMenu.razor
@@ -28,7 +28,7 @@
 @code {
     private bool collapseNavMenu = true;
 
-    private string NavMenuCssClass => collapseNavMenu ? "collapse" : null;
+    private string? NavMenuCssClass => collapseNavMenu ? "collapse" : null;
 
     private void ToggleNavMenu()
     {

diff --git a/...eb.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/Shared/SurveyPrompt.razor b/...eb.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Client/Shared/SurveyPrompt.razor
@@ -12,5 +12,5 @@
 @code {
     // Demonstrates how a parent component can supply parameters
     [Parameter]
-    public string Title { get; set; }
+    public string? Title { get; set; }
 }
diff --git a/...tent/ComponentsWebAssembly-CSharp/Server/Areas/Identity/Pages/Shared/_LoginPartial.cshtml b/...tent/ComponentsWebAssembly-CSharp/Server/Areas/Identity/Pages/Shared/_LoginPartial.cshtml
@@ -15,7 +15,7 @@
 @if (SignInManager.IsSignedIn(User))
 {
     <li class="nav-item">
-        <a  class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @User.Identity.Name!</a>
+        <a  class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @User.Identity?.Name!</a>
     </li>
     <li class="nav-item">
         <form class="form-inline" asp-area="Identity" asp-page="/Account/Logout" asp-route-returnUrl="/" method="post">

diff --git a/...es/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Server/Pages/Error.cshtml.cs b/...es/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Server/Pages/Error.cshtml.cs
@@ -13,7 +13,7 @@ namespace ComponentsWebAssembly_CSharp.Server.Pages
     [IgnoreAntiforgeryToken]
     public class ErrorModel : PageModel
     {
-        public string RequestId { get; set; }
+        public string? RequestId { get; set; }
 
         public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
 

diff --git a/...lates/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Shared/WeatherForecast.cs b/...lates/Web.ProjectTemplates/content/ComponentsWebAssembly-CSharp/Shared/WeatherForecast.cs
@@ -10,7 +10,7 @@ public class WeatherForecast
 
         public int TemperatureC { get; set; }
 
-        public string Summary { get; set; }
+        public string? Summary { get; set; }
 
         public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
     }

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Error.cshtml.cs b/src/ProjectTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Error.cshtml.cs
@@ -13,7 +13,7 @@ namespace Company.WebApplication1.Pages
     [IgnoreAntiforgeryToken]
     public class ErrorModel : PageModel
     {
-        public string RequestId { get; set; }
+        public string? RequestId { get; set; }
 
         public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
 

diff --git a/...ctTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_Layout.cshtml b/...ctTemplates/Web.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_Layout.cshtml
@@ -28,7 +28,7 @@
     @*#if (IndividualAuth || OrganizationalAuth)
                     <partial name="_LoginPartial" />
     #elseif (WindowsAuth)
-                    <p class="nav navbar-text">Hello, @User.Identity.Name!</p>
+                    <p class="nav navbar-text">Hello, @User.Identity?.Name!</p>
     #endif*@
                 </div>
             </div>

diff --git a/....ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_LoginPartial.Identity.cshtml b/....ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_LoginPartial.Identity.cshtml
@@ -6,7 +6,7 @@
 @if (SignInManager.IsSignedIn(User))
 {
     <li class="nav-item">
-        <a  class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @User.Identity.Name!</a>
+        <a  class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @User.Identity?.Name!</a>
     </li>
     <li class="nav-item">
         <form class="form-inline" asp-area="Identity" asp-page="/Account/Logout" asp-route-returnUrl="@Url.Page("/", new { area = "" })" method="post" >

diff --git a/...b.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_LoginPartial.OrgAuth.cshtml b/...b.ProjectTemplates/content/RazorPagesWeb-CSharp/Pages/Shared/_LoginPartial.OrgAuth.cshtml
@@ -11,20 +11,20 @@
 
 <ul class="navbar-nav">
 @*#if (IndividualB2CAuth)
-@if (User.Identity.IsAuthenticated)
+@if (User.Identity?.IsAuthenticated == true)
 {
         @if (!string.IsNullOrEmpty(options.EditProfilePolicyId))
         {
             <li class="nav-item">
                 <a class="nav-link text-dark" asp-area="MicrosoftIdentity" asp-controller="Account" asp-action="EditProfile">
-                    <span class="text-dark">Hello @User.Identity.Name!</span>
+                    <span class="text-dark">Hello @User.Identity?.Name!</span>
                 </a>
             </li>
         }
         else
         {
             <li class="nav-item">
-                <span class="navbar-text text-dark">Hello @User.Identity.Name!</span>
+                <span class="navbar-text text-dark">Hello @User.Identity?.Name!</span>
             </li>
         }
         <li class="nav-item">
@@ -38,10 +38,10 @@ else
         </li>
 }
 #else
-@if (User.Identity.IsAuthenticated)
+@if (User.Identity?.IsAuthenticated == true)
 {
         <li class="nav-item">
-            <span class="navbar-text text-dark">Hello @User.Identity.Name!</span>
+            <span class="navbar-text text-dark">Hello @User.Identity?.Name!</span>
         </li>
         <li class="nav-item">
             <a class="nav-link text-dark" asp-area="MicrosoftIdentity" asp-controller="Account" asp-action="SignOut">Sign out</a>

diff --git a/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/Models/ErrorViewModel.cs b/src/ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/Models/ErrorViewModel.cs
@@ -4,7 +4,7 @@ namespace Company.WebApplication1.Models
 {
     public class ErrorViewModel
     {
-        public string RequestId { get; set; }
+        public string? RequestId { get; set; }
 
         public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
     }

diff --git a/...ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/Error.cshtml b/...ProjectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/Error.cshtml
@@ -6,10 +6,10 @@
 <h1 class="text-danger">Error.</h1>
 <h2 class="text-danger">An error occurred while processing your request.</h2>
 
-@if (Model.ShowRequestId)
+@if (Model?.ShowRequestId ?? false)
 {
     <p>
-        <strong>Request ID:</strong> <code>@Model.RequestId</code>
+        <strong>Request ID:</strong> <code>@Model?.RequestId</code>
     </p>
 }
 

diff --git a/...ojectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/_Layout.cshtml b/...ojectTemplates/Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/_Layout.cshtml
@@ -28,7 +28,7 @@
     @*#if (IndividualAuth || OrganizationalAuth)
                     <partial name="_LoginPartial" />
     #elseif (WindowsAuth)
-                    <p class="nav navbar-text">Hello, @User.Identity.Name!</p>
+                    <p class="nav navbar-text">Hello, @User.Identity?.Name!</p>
     #endif*@
                 </div>
             </div>

diff --git a/...Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/_LoginPartial.Identity.cshtml b/...Web.ProjectTemplates/content/StarterWeb-CSharp/Views/Shared/_LoginPartial.Identity.cshtml
@@ -6,7 +6,7 @@
 @if (SignInManager.IsSignedIn(User))
 {
     <li class="nav-item">
-        <a  class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @User.Identity.Name!</a>
+        <a  class="nav-link text-dark" asp-area="Identity" asp-page="/Account/Manage/Index" title="Manage">Hello @User.Identity?.Name!</a>
     </li>
     <li class="nav-item">
         <form  class="form-inline" asp-area="Identity" asp-page="/Account/Logout" asp-route-returnUrl="@Url.Action("Index", "Home", new { area = "" })">