Clarify location of InitializeComponent method (#27962)

aspnetcore/blazor/hybrid/tutorials/windows-forms.md

@@ -221,7 +221,7 @@ using Microsoft.AspNetCore.Components.WebView.WindowsForms;
 using Microsoft.Extensions.DependencyInjection;
 ```
 
-Inside the `Form1` constructor, after the `InitializeComponent()` method call, add the following code:
+Inside the `Form1` constructor, after the `InitializeComponent` method call, add the following code:
 
 ```csharp
 var services = new ServiceCollection();
@@ -231,6 +231,9 @@ blazorWebView1.Services = services.BuildServiceProvider();
 blazorWebView1.RootComponents.Add<Counter>("#app");
 ```
 
+> [!NOTE]
+> The `InitializeComponent` method is generated by a source generator at app build time and added to the compilation object for the calling class.
+
 The final, complete C# code of `Form1.cs`:
 
 ```csharp

aspnetcore/blazor/hybrid/tutorials/wpf.md

@@ -234,7 +234,7 @@ Add the namespace <xref:Microsoft.Extensions.DependencyInjection?displayProperty
 using Microsoft.Extensions.DependencyInjection;
 ```
 
-Inside the `MainWindow` constructor, after the `InitializeComponent()` method call, add the following code:
+Inside the `MainWindow` constructor, after the `InitializeComponent` method call, add the following code:
 
 ```csharp
 var serviceCollection = new ServiceCollection();
@@ -242,6 +242,9 @@ serviceCollection.AddWpfBlazorWebView();
 Resources.Add("services", serviceCollection.BuildServiceProvider());
 ```
 
+> [!NOTE]
+> The `InitializeComponent` method is generated by a source generator at app build time and added to the compilation object for the calling class.
+
 The final, complete C# code of `MainWindow.xaml.cs`:
 
 ```csharp