Register default implementations on other platforms

Author: javiercn

src/Components/WebAssembly/WebAssembly/src/Hosting/WebAssemblyHostBuilder.cs

@@ -262,5 +262,6 @@ internal void InitializeDefaultServices()
             builder.AddProvider(new WebAssemblyConsoleLoggerProvider(DefaultWebAssemblyJSRuntime.Instance));
         });
         Services.AddSingleton<FormDataProvider, DefaultFormDataProvider>();
+        Services.AddSingleton<IFormValueSupplier, WebAssemblyFormValueSupplier>();
     }
 }

src/Components/WebAssembly/WebAssembly/src/Services/WebAssemblyFormValueSupplier.cs

@@ -0,0 +1,20 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Diagnostics.CodeAnalysis;
+using Microsoft.AspNetCore.Components.Binding;
+
+namespace Microsoft.AspNetCore.Components.WebAssembly.Services;
+internal class WebAssemblyFormValueSupplier : IFormValueSupplier
+{
+    public bool CanBind(string formName, Type valueType)
+    {
+        return false;
+    }
+
+    public bool TryBind(string formName, Type valueType, [NotNullWhen(true)] out object? boundValue)
+    {
+        boundValue = null;
+        return false;
+    }
+}

src/Components/WebView/WebView/src/ComponentsWebViewServiceCollectionExtensions.cs

@@ -31,6 +31,8 @@ public static IServiceCollection AddBlazorWebView(this IServiceCollection servic
         services.TryAddScoped<NavigationManager, WebViewNavigationManager>();
         services.TryAddScoped<IErrorBoundaryLogger, WebViewErrorBoundaryLogger>();
         services.TryAddScoped<FormDataProvider, DefaultFormDataProvider>();
+        services.TryAddScoped<IFormValueSupplier, WebViewFormValueSupplier>();
+
         return services;
     }
 }

src/Components/WebView/WebView/src/Services/WebViewFormValueSupplier.cs

@@ -0,0 +1,21 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Diagnostics.CodeAnalysis;
+using Microsoft.AspNetCore.Components.Binding;
+
+namespace Microsoft.AspNetCore.Components.WebView.Services;
+
+internal class WebViewFormValueSupplier : IFormValueSupplier
+{
+    public bool CanBind(string formName, Type valueType)
+    {
+        return false;
+    }
+
+    public bool TryBind(string formName, Type valueType, [NotNullWhen(true)] out object? boundValue)
+    {
+        boundValue = null;
+        return false;
+    }
+}