Updates

Author: guardrex

aspnetcore/blazor/blazor-ef-core.md

@@ -141,7 +141,7 @@ In the preceding factory:
 
 :::moniker-end
 
-The following example configures [SQLite](https://www.sqlite.org/index.html) and enables data logging. The code uses an extension method (<xref:Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.AddDbContextFactory%2A>) to configure the database factory for DI and provide default options:
+The following example configures [SQLite](https://www.sqlite.org/index.html) and enables data logging in an app that manages contacts. The code uses an extension method (<xref:Microsoft.Extensions.DependencyInjection.EntityFrameworkServiceCollectionExtensions.AddDbContextFactory%2A>) to configure the database factory for DI and provide default options:
 
 :::moniker range=">= aspnetcore-6.0"
 
@@ -161,15 +161,17 @@ services.AddDbContextFactory<ContactContext>(opt =>
 
 :::moniker-end
 
-The factory is injected into components and used to create new `DbContext` instances.
+The factory is injected into components to create new <xref:Microsoft.EntityFrameworkCore.DbContext> instances.
 
-`IDbContextFactory<ContactContext>` is injected into the component:
+## Scope a database context to a component method
+
+The factory is injected into the component:
 
 ```razor
 @inject IDbContextFactory<ContactContext> DbFactory
 ```
 
-To delete a contact in a Razor component, `DbContext` is created using the factory (`DbFactory`):
+Create a <xref:Microsoft.EntityFrameworkCore.DbContext> for a method using the factory (`DbFactory`):
 
 ```csharp
 private async Task DeleteContactAsync()
@@ -189,33 +191,38 @@ private async Task DeleteContactAsync()
 }
 ```
 
-## Scope to the component lifetime
+## Scope a database context to the lifetime of the component
 
 You may wish to create a <xref:Microsoft.EntityFrameworkCore.DbContext> that exists for the lifetime of a component. This allows you to use it as a [unit of work](https://martinfowler.com/eaaCatalog/unitOfWork.html) and take advantage of built-in features, such as change tracking and concurrency resolution.
 
-You can use the factory to create a context and track it for the lifetime of the component. First, implement <xref:System.IDisposable> and inject the factory into the component:
+Implement <xref:System.IDisposable> and inject the factory into the component:
 
 ```razor
 @implements IDisposable
 @inject IDbContextFactory<ContactContext> DbFactory
 ```
 
-The context is disposed when the component is disposed:
+Establish a property for the <xref:Microsoft.EntityFrameworkCore.DbContext>:
 
 ```csharp
-public void Dispose() => Context?.Dispose();
+private ContactContext? Context { get; set; }
 ```
 
-Finally, [`OnInitializedAsync`](xref:blazor/components/lifecycle) is overridden to create a new context and load the contact:
+[`OnInitializedAsync`](xref:blazor/components/lifecycle) is overridden to create the <xref:Microsoft.EntityFrameworkCore.DbContext>:
 
 ```csharp
 protected override async Task OnInitializedAsync()
 {
     Context = DbFactory.CreateDbContext();
-    Contact = await Context.Contacts.SingleOrDefaultAsync(...);
 }
 ```
 
+The <xref:Microsoft.EntityFrameworkCore.DbContext> is disposed when the component is disposed:
+
+```csharp
+public void Dispose() => Context?.Dispose();
+```
+
 ## Enable sensitive data logging
 
 <xref:Microsoft.EntityFrameworkCore.DbContextOptionsBuilder.EnableSensitiveDataLogging%2A> includes application data in exception messages and framework logging. The logged data can include the values assigned to properties of entity instances and parameter values for commands sent to the database. Logging data with <xref:Microsoft.EntityFrameworkCore.DbContextOptionsBuilder.EnableSensitiveDataLogging%2A> is a **security risk**, as it may expose passwords and other [Personally Identifiable Information (PII)](xref:blazor/security/index#personally-identifiable-information-pii) when it logs SQL statements executed against the database.