Enable nullable references in project templates

Contributes to dotnet/aspnetcore#33947

Commit migrated from dotnet/aspnetcore@7db552674a

src/Angular-CSharp.csproj.in

@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <IsPackable>false</IsPackable>
     <SpaRoot>ClientApp\</SpaRoot>
     <SpaProxyServerUrl Condition="'$(RequiresHttps)' == 'True'">https://localhost:5002</SpaProxyServerUrl>

src/React-CSharp.csproj.in

@@ -2,6 +2,7 @@
 
   <PropertyGroup>
     <TargetFramework>${DefaultNetCoreTargetFramework}</TargetFramework>
+    <Nullable>enable</Nullable>
     <TypeScriptCompileBlocked>true</TypeScriptCompileBlocked>
     <TypeScriptToolsVersion>Latest</TypeScriptToolsVersion>
     <IsPackable>false</IsPackable>

src/content/Angular-CSharp/.template.config/template.json

@@ -25,7 +25,8 @@
         ".template.config/**"
       ],
       "copyOnly": [
-        "wwwroot/**"
+        "wwwroot/**",
+        "ClientApp/package-lock.json"
       ],
       "modifiers": [
         {

src/content/Angular-CSharp/Pages/Error.cshtml.cs

@@ -19,7 +19,7 @@ namespace Company.WebApplication1.Pages
             _logger = logger;
         }
 
-        public string RequestId { get; set; }
+        public string? RequestId { get; set; }
 
         public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
 

src/content/Angular-CSharp/WeatherForecast.cs

@@ -10,6 +10,6 @@ namespace Company.WebApplication1
 
         public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
 
-        public string Summary { get; set; }
+        public string? Summary { get; set; }
     }
 }

src/content/React-CSharp/.template.config/template.json

@@ -25,7 +25,8 @@
         ".template.config/**"
       ],
       "copyOnly": [
-        "wwwroot/**"
+        "wwwroot/**",
+        "ClientApp/package-lock.json"
       ],
       "modifiers": [
         {

src/content/React-CSharp/Pages/Error.cshtml.cs

@@ -19,7 +19,7 @@ namespace Company.WebApplication1.Pages
             _logger = logger;
         }
 
-        public string RequestId { get; set; }
+        public string? RequestId { get; set; }
 
         public bool ShowRequestId => !string.IsNullOrEmpty(RequestId);
 

src/content/React-CSharp/Pages/Shared/_LoginPartial.cshtml

@@ -16,7 +16,7 @@
     @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="/">

src/content/React-CSharp/WeatherForecast.cs

@@ -10,6 +10,6 @@ namespace Company.WebApplication1
 
         public int TemperatureF => 32 + (int)(TemperatureC / 0.5556);
 
-        public string Summary { get; set; }
+        public string? Summary { get; set; }
     }
 }