Flip switch for controlling navigation flow on SSR (#62358)

* Flip.

* Update templates.

Author: ilonatommy

src/Components/Endpoints/src/DependencyInjection/HttpNavigationManager.cs

@@ -8,11 +8,11 @@ namespace Microsoft.AspNetCore.Components.Endpoints;
 
 internal sealed class HttpNavigationManager : NavigationManager, IHostEnvironmentNavigationManager
 {
-    private const string _enableThrowNavigationException = "Microsoft.AspNetCore.Components.Endpoints.NavigationManager.EnableThrowNavigationException";
+    private const string _disableThrowNavigationException = "Microsoft.AspNetCore.Components.Endpoints.NavigationManager.DisableThrowNavigationException";
 
-    [FeatureSwitchDefinition(_enableThrowNavigationException)]
+    [FeatureSwitchDefinition(_disableThrowNavigationException)]
     private static bool _throwNavigationException =>
-        AppContext.TryGetSwitch(_enableThrowNavigationException, out var switchValue) && switchValue;
+        !AppContext.TryGetSwitch(_disableThrowNavigationException, out var switchValue) || !switchValue;
 
     private Func<string, Task>? _onNavigateTo;
 

src/Components/Endpoints/test/EndpointHtmlRendererTest.cs

@@ -849,9 +849,9 @@ public async Task Rendering_ComponentWithJsInteropThrows()
     [Theory]
     [InlineData(true)]
     [InlineData(false)]
-    public async Task UriHelperRedirect_ThrowsInvalidOperationException_WhenResponseHasAlreadyStarted(bool expectException)
+    public async Task UriHelperRedirect_ThrowsInvalidOperationException_WhenResponseHasAlreadyStarted(bool allowException)
     {
-        AppContext.SetSwitch("Microsoft.AspNetCore.Components.Endpoints.NavigationManager.EnableThrowNavigationException", isEnabled: expectException);
+        AppContext.SetSwitch("Microsoft.AspNetCore.Components.Endpoints.NavigationManager.DisableThrowNavigationException", isEnabled: !allowException);
         // Arrange
         var ctx = new DefaultHttpContext();
         ctx.Request.Scheme = "http";
@@ -867,7 +867,7 @@ public async Task UriHelperRedirect_ThrowsInvalidOperationException_WhenResponse
         string redirectUri = "http://localhost/redirect";
 
         // Act
-        if (expectException)
+        if (allowException)
         {
             var exception = await Assert.ThrowsAsync<InvalidOperationException>(async () => await renderer.PrerenderComponentAsync(
                 httpContext,

src/Components/Server/src/Circuits/RemoteNavigationManager.cs

@@ -17,11 +17,11 @@ internal sealed partial class RemoteNavigationManager : NavigationManager, IHost
     private readonly ILogger<RemoteNavigationManager> _logger;
     private IJSRuntime _jsRuntime;
     private bool? _navigationLockStateBeforeJsRuntimeAttached;
-    private const string _enableThrowNavigationException = "Microsoft.AspNetCore.Components.Endpoints.NavigationManager.EnableThrowNavigationException";
+    private const string _disableThrowNavigationException = "Microsoft.AspNetCore.Components.Endpoints.NavigationManager.DisableThrowNavigationException";
 
-    [FeatureSwitchDefinition(_enableThrowNavigationException)]
+    [FeatureSwitchDefinition(_disableThrowNavigationException)]
     private static bool _throwNavigationException =>
-        AppContext.TryGetSwitch(_enableThrowNavigationException, out var switchValue) && switchValue;
+        !AppContext.TryGetSwitch(_disableThrowNavigationException, out var switchValue) || !switchValue;
     private Func<string, Task>? _onNavigateTo;
 
     public event EventHandler<Exception>? UnhandledException;

src/Components/test/E2ETest/ServerRenderingTests/InteractivityTest.cs

@@ -1405,7 +1405,7 @@ public void CanPersistMultiplePrerenderedStateDeclaratively_Auto_PersistsOnWebAs
     [InlineData(false)]
     public void NavigatesWithInteractivityByRequestRedirection(bool controlFlowByException)
     {
-        AppContext.SetSwitch("Microsoft.AspNetCore.Components.Endpoints.NavigationManager.EnableThrowNavigationException", isEnabled: controlFlowByException);
+        AppContext.SetSwitch("Microsoft.AspNetCore.Components.Endpoints.NavigationManager.DisableThrowNavigationException", isEnabled: !controlFlowByException);
         Navigate($"{ServerPathBase}/routing/ssr-navigate-to");
         Browser.Equal("Click submit to navigate to home", () => Browser.Exists(By.Id("test-info")).Text);
         Browser.Click(By.Id("redirectButton"));

src/Components/test/E2ETest/ServerRenderingTests/NoInteractivityTest.cs

@@ -72,7 +72,7 @@ public void CanUseServerAuthenticationStateByDefault()
     [InlineData(false, true)]
     public void NavigatesWithoutInteractivityByRequestRedirection(bool controlFlowByException, bool isStreaming)
     {
-        AppContext.SetSwitch("Microsoft.AspNetCore.Components.Endpoints.NavigationManager.EnableThrowNavigationException", isEnabled: controlFlowByException);
+        AppContext.SetSwitch("Microsoft.AspNetCore.Components.Endpoints.NavigationManager.DisableThrowNavigationException", isEnabled: !controlFlowByException);
         string streaming = isStreaming ? $"streaming-" : "";
         Navigate($"{ServerPathBase}/routing/ssr-{streaming}navigate-to");
         Browser.Equal("Click submit to navigate to home", () => Browser.Exists(By.Id("test-info")).Text);

src/ProjectTemplates/Web.ProjectTemplates/BlazorWeb-CSharp.Client.csproj.in

@@ -8,6 +8,7 @@
     <StaticWebAssetProjectMode>Default</StaticWebAssetProjectMode>
     <RootNamespace Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">BlazorWeb-CSharp.Client</RootNamespace>
     <AssemblyName Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">`$(AssemblyName.Replace(' ', '_'))</AssemblyName>
+    <BlazorDisableThrowNavigationException>true</BlazorDisableThrowNavigationException>
   </PropertyGroup>
 
   <ItemGroup>

src/ProjectTemplates/Web.ProjectTemplates/BlazorWeb-CSharp.csproj.in

@@ -8,6 +8,7 @@
     <NoDefaultLaunchSettingsFile Condition="'$(ExcludeLaunchSettings)' == 'True'">True</NoDefaultLaunchSettingsFile>
     <RootNamespace Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">BlazorWeb-CSharp</RootNamespace>
     <AssemblyName Condition="'$(name)' != '$(name{-VALUE-FORMS-}safe_namespace)'">`$(AssemblyName.Replace(' ', '_'))</AssemblyName>
+    <BlazorDisableThrowNavigationException>true</BlazorDisableThrowNavigationException>
   </PropertyGroup>
 
   <!--#if (IndividualLocalAuth && !UseLocalDB) -->