diff --git a/aspnetcore/blazor/components/virtualization.md b/aspnetcore/blazor/components/virtualization.md
index 0985702a6a3c..033f7dddea4a 100644
--- a/aspnetcore/blazor/components/virtualization.md
+++ b/aspnetcore/blazor/components/virtualization.md
@@ -97,7 +97,7 @@ The items provider receives an <xref:Microsoft.AspNetCore.Components.Web.Virtual
 
 A <xref:Microsoft.AspNetCore.Components.Web.Virtualization.Virtualize%601> component can only accept **one item source** from its parameters, so don't attempt to simultaneously use an items provider and assign a collection to `Items`. If both are assigned, an <xref:System.InvalidOperationException> is thrown when the component's parameters are set at runtime.
 
-The following example loads employees from an `EmployeeService` (not shown):
+The following example loads employees from an `EmployeeService` (not shown). The `totalEmployees` field would typically be assigned by calling a method on the same service (for example, `EmployeesService.GetEmployeesCountAsync`) elsewhere, such as during component initialization.
 
 ```csharp
 private async ValueTask<ItemsProviderResult<Employee>> LoadEmployees(
diff --git a/aspnetcore/blazor/tutorials/movie-database-app/part-2.md b/aspnetcore/blazor/tutorials/movie-database-app/part-2.md
index b7141aecef6c..ea3f08d8836a 100644
--- a/aspnetcore/blazor/tutorials/movie-database-app/part-2.md
+++ b/aspnetcore/blazor/tutorials/movie-database-app/part-2.md
@@ -128,6 +128,7 @@ dotnet add package Microsoft.EntityFrameworkCore.SqlServer
 dotnet add package Microsoft.EntityFrameworkCore.Tools
 dotnet add package Microsoft.AspNetCore.Components.QuickGrid
 dotnet add package Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdapter
+dotnet add package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore
 ```
 
 > [!IMPORTANT]
@@ -138,11 +139,12 @@ dotnet add package Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdap
 
 The preceding commands add:
 
-* [Command-line interface (CLI) tools for EF Core](/ef/core/miscellaneous/cli/dotnet)
-* [`aspnet-codegenerator` scaffolding tool](xref:fundamentals/tools/dotnet-aspnet-codegenerator)
-* Design time tools for EF Core
-* The SQLite and SQL Server providers with the EF Core package as a dependency
-* [`Microsoft.VisualStudio.Web.CodeGeneration.Design`](https://www.nuget.org/packages/Microsoft.VisualStudio.Web.CodeGeneration.Design) for scaffolding
+* [Command-line interface (CLI) tools for EF Core](/ef/core/miscellaneous/cli/dotnet).
+* [`aspnet-codegenerator` scaffolding tool](xref:fundamentals/tools/dotnet-aspnet-codegenerator).
+* Design time tools for EF Core.
+* The SQLite and SQL Server providers with the EF Core package as a dependency.
+* [`Microsoft.VisualStudio.Web.CodeGeneration.Design`](https://www.nuget.org/packages/Microsoft.VisualStudio.Web.CodeGeneration.Design) for scaffolding.
+* [`Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore`](https://www.nuget.org/packages/Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore) to use the <xref:Microsoft.Extensions.DependencyInjection.DatabaseDeveloperPageExceptionFilterServiceExtensions.AddDatabaseDeveloperPageExceptionFilter%2A> extension method in the `Program` file, which captures database-related exceptions.
 
 In the **Command Palette** (<kbd>Ctrl</kbd>+<kbd>Shift</kbd>+<kbd>P</kbd>), use the `.NET: Build` command to build the app.
 
@@ -169,6 +171,7 @@ dotnet add package Microsoft.EntityFrameworkCore.SqlServer
 dotnet add package Microsoft.EntityFrameworkCore.Tools
 dotnet add package Microsoft.AspNetCore.Components.QuickGrid
 dotnet add package Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdapter
+dotnet add package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore
 ```
 
 > [!IMPORTANT]
@@ -176,11 +179,12 @@ dotnet add package Microsoft.AspNetCore.Components.QuickGrid.EntityFrameworkAdap
 
 The preceding commands add:
 
-* [Command-line interface (CLI) tools for EF Core](/ef/core/miscellaneous/cli/dotnet)
-* [`aspnet-codegenerator` scaffolding tool](xref:fundamentals/tools/dotnet-aspnet-codegenerator)
-* Design time tools for EF Core
-* The SQLite and SQL Server providers with the EF Core package as a dependency
-* [`Microsoft.VisualStudio.Web.CodeGeneration.Design`](https://www.nuget.org/packages/Microsoft.VisualStudio.Web.CodeGeneration.Design) for scaffolding
+* [Command-line interface (CLI) tools for EF Core](/ef/core/miscellaneous/cli/dotnet).
+* [`aspnet-codegenerator` scaffolding tool](xref:fundamentals/tools/dotnet-aspnet-codegenerator).
+* Design time tools for EF Core.
+* The SQLite and SQL Server providers with the EF Core package as a dependency.
+* [`Microsoft.VisualStudio.Web.CodeGeneration.Design`](https://www.nuget.org/packages/Microsoft.VisualStudio.Web.CodeGeneration.Design) for scaffolding.
+* [`Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore`](https://www.nuget.org/packages/Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore) to use the <xref:Microsoft.Extensions.DependencyInjection.DatabaseDeveloperPageExceptionFilterServiceExtensions.AddDatabaseDeveloperPageExceptionFilter%2A> extension method in the `Program` file, which captures database-related exceptions. 
 
 In a command shell opened to the project's root folder, execute the [`dotnet build`](/dotnet/core/tools/dotnet-build) command: